Canon EOS 400D Camera Review, Via Digitalcamerabattery.us Blog

Canon EOS 400D Camera Review, Via Digitalcamerabattery.us Blog

Canon EOS 400D SLR camera: Three years ago, shocked the market, Canon cameras with the launch of the six-megapixel EOS 300D. He was a revolutionary price would be very important for the DSLR market. Suddenly, a digital SLR camera for the amateur photographer. And it is all for this event, digital SLR models in high demand. After a year and a half, took the Canon EOS 350D, which easily adapts to the success of its predecessor. It is likely that the successor to the EOS 350D is back for another year and a half later. This was the case. Canon happens to be the last DSLR Canon EOS 400D, a ten-megapixel model. Significantly, the EOS 350D will remain in stores. This does not change the fact however that the Canon 400D his successor should be considered.

In each iteration of the Canon Digital Rebel family raises the bar for image quality and camera features while lowering the starting price. This iteration brings us the Canon EOS Rebel XTi / 400D Digital SLR price level image quality and professionalism. The EOS Digital Rebel XTi (USA), 400D EOS Kiss Digital X (Japan) and EOS (anywhere) is easy enough for beginners, but strong enough to do the job for many professionals. In 18 months, Canon has sold 1.2 million units 350D/Rebel XT SLR digital. The 400D/XTi take their place in the market. Note: Canon leaves rarely updated to launching new digital SLR models. Older models are reduced in price for some time - and is no longer available.

So what about the Rebel XTi? The short list:

• New 10.1 effective megapixel CMOS (versus 8.0 on the Rebel XT)


• Further reduction of dust (more on this later)


• Large 2.5-inch LCD display (versus 1.8 “on the XT)


• No further information LCD (main LCD is used instead)


• 9 AF points (to 7 points)


• Now you can take more shots in a row in burst mode (27 vs 14 JPEG, RAW 10 vs 6)


• New Picture Style function for the first time in the EOS 5D and 30D


• The battery life is 10% less than the XT


• Everything else is the same. You get a very compact case (for an SLR), manual controls everything you can imagine, and support of Canon EF and EF-S.

Contents of the box?

As mentioned in the introduction, the Rebel XTi is available in two packages: the body only with an EF-S 18-55. This is what we found in each of these sets:

• A 10.1-megapixel Rebel XTi digital camera body


• 18-55mm F3.5 - 5.6 Mk II EF-S lens [lens kit only]


• NB-2LH Li-Ion Battery


• Battery Charger


• Lanyard


• Eye


• Cover


• USB Cable


• Video Cable


• CD-ROM with the EOS Digital Solution software and user manual


• 179 page camera manual (printed)

As with all Canon digital SLR cameras no memory card included with the Rebel XTi, so you need to work on the full purchase price. Fortunately, CompactFlash cards are cheap these days, and I recommend a 1 GB card size good starting point. The Rebel XTi Card Type I and II, including Microdrive. Buying a high speed CF card (50X or higher) is a good idea.

The frequency of importers, to believe the differences between the types of EOS are so great. Of course, the camera also has seen a lot of internal changes. The Canon 400D has, for example, has 9 AF points as the more expensive EOS 30D, while the buffer was increased to 27 JPEG or 10 RAW images. A notable difference between the EOS 350D and EOS 400D new concerns of the image sensor. However, not so much the fact that the number of pixels has increased to 10 megapixels, the difference compared with 8 megapixels, this is still not as significant. The increase in megapixels is probably used to compete with the still camera, a marketing tool if you want. The third weapon in the battle against dust is the new low pass filter. A piezoelectric element is allowed to vibrate, thus falling into the dust filter, and therefore out of sight. Digital SLR enthusiasts might see us this story surprisingly familiar. If despite these precautions, you’ll find dust in the file can be easily removed by the software. Simply take a photo of a sheet of white paper.

Battery: The XTi is the same as the XT NB-2LH, but reduced due to the larger screen, its function as a status indicator, and the new system of self-purification, self-reliance. You can expect 500 pictures at room temperature (without flash) and 360 shots with flash 50%. At temperatures below zero, this reduces to the expectations of a respectable 370 and up to 280 photos without flash.

If you want to use AA batteries on the Rebel XTi, then an option on the battery trying. They spend almost $ 150 buy Canon BG-E3 grip(dslr battery grip), or you can take Targus Rebel XT / XTi Battery Grip for under $ 100. I had the opportunity to build from the clutches of Targus, and it feels like my Canon 20D grip. Whatever you take care now, you can at once two NB-2LH batteries or six AA batteries, the company doubled the lifespan of the battery from the camera. You also get some extra buttons and dials, and that makes the camera easier to hold together.

Canon EOS 400D Battery Grip Replacement &Charger

• EOS 400D Grip replacement specifications :


• Voltage : 7.4V


• Capacity : 2100mAh


• Battery Type : NB-2LH


• Input : 9.0V~12.0V


• Output : 7.4V


• Dimensions : 127×70x88mm

Canon EOS 400D Battery Grip Replacement - Product information

• The canon eos 400d battery grip Replacement inbox: battery grip, 2100mAh battery, charger!


• EOS 400D Battery Grip Replacement AC charger: Input- 100V~240V AC 50/60HZ 500mA, Output - 12.5V DC 750mA .


• Product Type : Battery Grip Replacement for CANON EOS 350D/EOS 400D DSLR cameras.


• The most attractive point is that the EOS 400D Battery Grip Replacement can integrated with a high capacity 2100mAh Lithium Ion battery, which makes 2100 shots actual in one full charge and makes it a dreaming product for professional photographers.


• The Canon EOS 400D Battery Grip Replacement equipped with a vertical-grip shutter button, command dial, AE lock/FE lock, and AF point selector button to enable shooting in the same fashion as a horizontal grip.


• Order Canon EOS 400D Battery Grip Replacement today: Full One year waranty and 30 days money back.

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DisplaySearch: 09 global solar capacity will grow 56%

DisplaySearch: 09 global solar capacity will grow 56%

With the flat panel display market research and technology more than 13 years of research experience and research framework, DisplaySearch has officially entered the solar cell industry, technology and market research, and formally announced today the first issue of DisplaySearch report --- solar industry worldwide solar cell production capacity of the database and Trend Quarterly Report (Quarterly PV Cell Capacity Database & Trends Report).

According to DisplaySearch released in the third quarter of 2009 the global solar cell production capacity of the database and Trend quarterly report, the global solar cell (Solar Cell) of production capacity will grow 56% over last year to reach 17GW (170 billion watts.) 2005 global production capacity only up to 2.3GW (23 billion watts), however, companies actively involved in the expansion around the world under the 2013 will grow to 42GW (420 billion watts.) The following photos for the global solar cell production forecast by the type of technology.

"Although the changes in the global economy and the national government subsidies to reduce the impact of the global solar cell module (Module) needs 17% decline in 2009, but because many solar cells (Cell) of the equipment has been order by the manufacturer, and in accordance with time-machines, with many manufacturers are still actively expanding in 2009, the global solar cell production capacity will continue to grow substantially 56%. "DisplaySearch dedicated solar energy industry is responsible for market and technology research Charles Annis said.

Annis further stated: "As the demand and capacity are inconsistent, the current solar industry is through over-supply crisis, and led to the module prices rapidly declining, and there may be many solar cells Cell manufacturers damage of combat, particularly in film technology than the giant firms affected. We expect next year's solar cell industry will experience a crisis of overcapacity in the industrial restructuring, the recovery in 2011 as demand, industry will have better prospects. "

DisplaySearch in the latest issue of the third quarter of 2009 the global solar cell production capacity of the database and Trend quarterly report, the other focus are summarized as follows:

1 up to 2006, Japan has the world's largest production capacity, the Chinese mainland manufacturers since 2005 actively into new plant capacity expansion, and in 2007 became the world's largest solar cell producer, and is expected in 2009, accounting for the global Solar Cell production capacity by one third.

2 2009 Film (Thin Film) solar cell production capacity of 3.58GW (35.8 billion watts), of which 30% of the use of 600mm x 1,200 mm substrate size; this size is antimony cadmium (CdTe) solar cells, the standard substrate size and First Solar is currently used by other manufacturers. Commonly known as 5 generations of 1,000 x 1,200 mm to 1,100 x 1,400 mm glass substrate production of thin film solar cells in the second, accounting for 18% of all films.

3 From January 2008 to July 2009 to date, the global total added 11.4GW (114 billion watts) of new solar cell production capacity, this huge demand for new capacity is 2009 in the case of poor productivity under substantial growth of 56% is still the main reason.

4 2005 years the global solar cell production line with 95% of crystallization, 5% of thin film technology. When in 2009 the global total production capacity of thin film technology is expected to reach 20% by 2013 is expected to grow to 30%.

5 for amorphous silicon (a-Si) production capacity in 2009, four major equipment supplier for the AMAT, Oerlikon, ULVAC, and EPV; the four equipment manufacturers for the supply of production capacity reached 946MW (9 亿 4,600 million W), which is half the capacity of all Si.

6 accordance with the 2009 global solar cell (Cell) capacity point of view, First Solar is the largest manufacturer, the production capacity of 10 gigawatts (1GW), Q-Cells and Suntech tied for second. In the next few years, the major investment in equipment also increased from the leader driven. DisplaySearch forecasts that by 2013, First Solar, Q-Cells, Suntech and other top three vendors, and JA Solar, Motech, REC, SunPower, Yingli, Showa Shell Solar and Sharp, etc., will be the world's top ten suppliers, together Its capacity will reach 16GW (160 billion watts), global production capacity by 2013 will account for 38%..

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Lenovo ThinkPad X41 (Tablet) Laptop Review, Via Lenovo-batteries.com BLOG

Lenovo ThinkPad X41 (Tablet) Laptop Review, Via Lenovo-batteries.com BLOG

Lenovo ThinkPad X41 Laptop

The Lenovo ThinkPad X41 is a 12.1-inch screen ultraportable that follows in the footsteps of the release of these last years ThinkPad X40. Although the X41 is small and lightweight, weighs only 2.7 kg with a 4-cell battery is not in any way, that little power of 1.50 GHz Pentium M that uses the Intel 915GM chipset last. Most other sub-notebooks on the market with a 1.10 GHz or 1.20 GHz Pentium M. Combine X41 processor performance is beautiful with the rugged construction ThinkPad keyboard and excellent typical and an ultraportable that is easy to recommend .

The ThinkPad X41 is built just as solid as any other X or T series notebook from IBM. Do not be fooled, the size of the X41, it may seem cute and small, but if you take the plastic and feels stronger and stronger to realize that it is a device that is designed to play a match against making and not just look sweet. There’s just nothing chintzy about this machine, the hinges, keyboard, screen cover, case and trackpoint buttons all the physical properties of radiation.

Lenovo X41 specifications and configuration options

• Processor: Intel Pentium M LV 758 (1.50GHz, 90nm technology, 2MB L2 Cache, 400MHz FSB)


• Wireless: Intel PRO 2200BG or 2915ABG, Bluetooth optional


• Operating system: Windows XP Home / Pro


• Display: 12.1 "TFT XGA (1024 x 768)


• RAM: 256 MB or 512 MB PC-4200 DDR-2 SDRAM (expandable to 1536 MB max)


• HDD: 1.8 "20 GB, 30 GB, 40 GB or 60 GB 4200rpm @


• Battery: 2.5 hours (4 cells) 5.7 hours (8) cells (choice of extended battery life add 3 to 4 hours of life on the numbers for each battery)


• Ports: 2 USB 2.0 (1 IBM USB 2.0), Infrared, expansion bus (for optional ThinkPad X4 Ultra Base Doc), external monitor, power, RJ-11 modem port RJ-45 Ethernet, audio: headphone / line, external microphone.


• Slots: 1 PCMCIA slot, 1 Secure Digital slot


• Dimensions: 10.5 "x 8.3" x 1.06 "(W x D) (with 8 cell battery is 10.5" x 9.3 "x 1.06")


• Weight: 2.7 kg of 4-cell battery, 3.2 pounds with an 8-cell battery


• Expansion: ThinkPad X4 UltraBase Dock optional


• Warranty: 3 years

IBM / Lenovo is sufficient for a good job coordinating review unit laptops and do not spread the word about your products organized. That said, I’d be buying a laptop screen 12.1 "X41 soon and will probably be my choice -. So we know what is really the owner of this book My reason for buying an ultraportable class of laptop, my laptop anywhere I like to travel at least once a month, they do not need games (the ultraportables are notoriously bad to do) and have good experiences in the past to purchase portable game IBM.

The X41 is by design, very thin and lightweight. One way to know for supporting the weight of a portable device for the use of plastic as building material for the case. One thing that is common in ultraportables, but to highlight that there is no integrated optical drive for the X41, and has never been for the X series When purchasing the X41 is an optional X4 UltraBase additional. If you do not want the base expansion, but still need software on the X41, you can still read the discs to charge a fast network to other computers to access large amounts of data. ThinkPad keyboards are sealed and sit in a tray so that spills do not reach the electronics below. The 12.1-inch to the X41 is XGA resolution and there is nothing special to experience. It has a matt surface is not wide. Speakers at the X41 is underway on the merits. The X41 uses a fan to keep cool design and intelligent in its 1.5 GHz ThinkPad X41 I comes with an Intel 2915 PRO / Wireless 802.11 a / b / g Wi-Fi The X41 is equipped with an integrated fingerprint reader for biometric security guarantee to be acquired. technical specifications and characteristics common site, the ThinkPad X41, the band with a laptop very easy to use in small form factor screen of 12.1 inches. This is no small thing for a keyboard of a laptop of this size, which is the same as a keyboard to produce a current of 15.4. "The 1.5 GHz processor is faster than any other ultraportable market turned out, and heavyweight construction typical of the ThinkPad line is part of the course. It is a simple laptop to those who are highly mobile and recommend the need to drive to work. When combined with the X4 UltraBase docking solution to the X41 can function well as a series, if this option into account.

Pro

• 1.5GHz Intel Pentium M is the fastest of this great laptop


• Very easy to use keyboard and TrackPoint navigation, even with the limited area


• Combines rugged good Active Protection System and biometric security to a laptop with great data protection and security


• Thin and lightweight, only 1.06 cm thick at its lowest point and 2.7 pounds, while the 4-cell battery is used


• Good docking solution in the form of the X4 UltraBase provides nice expansion capabilities


• Includes PCMCIA slot for accessory upgrades easy - many do not ultraportables slot


• Very good wireless performance and software

Cons

• No integrated optical drive


• Secure Digital is the only flash memory available, competitors offer multi-card reader


• It may be hot on the palm rest at the bottom left and after being used


• Some might miss having a touchscreen and Windows shortcut


• 1.8 "hard drive is built into the property and can not be upgraded in the past 4200 rpm.

 

Lenovo ThinkPad X41 Talbet Laptop

The functionality of Tablet ThinkPad X41 Tablet Lenovo one of the best ultraportables on the market, the ThinkPad X41 has without compromising quality or safety of the screen. A $ 1.899 (July 2005) is similar to the price of this tablet convertible tablet competitors with faster hardware, but the ThinkPad X41 Tablet, the balance of portability, performance and safety is one of the best convertible on the market.

Its smooth case, black as pitch, looking like X41 laptop, but the tablet is slightly larger version, 1.1 inches thick, 10.7 cm wide and 9.5 cm deep. And with a weight of 3.6 pounds, is almost a pound heavier than the notebook. The extended battery adds pounds and 0.5 inches deep by weight, but is even thinner and more easily than a half-pound with the Averatec C3500. The X41 Tablet The adapter added 0.7 € normal weight.

Emotion in the Tablet PC has grown steadily throughout the first half of 2005. Instead of existing solely for adoption by vertical markets such as health / law enforcement medical industries, academic and related, has increased awareness of the Tablet PC platform among general consumers in a big jump. Demand for Tablet PC fianally increased to the point that many manufacturers of brand in the market for mobile computing with a variety of models of Tablet PC to follow the road for many others. Enter public computer IBM Lenovo ThinkPad X41 Tablet PC and Mobile has another interest in the Tablet platform. Our read counts here at TabletPCReviewSpot.com has come in response to this new and exciting model of a peak. The red carpet was put in place the largest home for the X41 Tablet.

ThinkPad X41 Tablet PC Standard

• Intel Pentium M LV (1.5 GHz) 758 - Processor


• (1.50GHz, 90nm technology, 2MB L2 Cache, 400MHz FSB)


• RAM - 512 MB DDR SDRAM


• Hard drive - 40 GB 4200rpm @


• Input device - keyboard, touchpad


• Weight - 3.5 pounds


• Dimensions (WxDxH) - 10.5 x 8.3 x 0.8 in


• Display - 12.1 "TFT active matrix


• Maximum resolution - 1024 x 768


• Audio Output - Sound card


• Modem - Fax 56 Kbps Modem


• Battery installed - 1 Lithium ion lenovo battery


• OS Provided - Microsoft Windows XP Tablet PC Edition 2005


• Type of service and support - 3 years warranty


• Ports: 2 USB 2.0 (1 IBM USB 2.0), Infrared, expansion bus (for optional ThinkPad X4 Ultra Base Doc), external monitor, power, RJ-11 modem port RJ-45 Ethernet, audio: headphone / line, external microphone.


• Slots: 1 PCMCIA slot, Secure Digital card slotIBM X41

The ThinkPad X41 is built just as solid as any other X or T series notebook from IBM. One way to know for supporting the weight of a portable device for the use of plastic as building material for the case. X41 much better performance offered by their environment ultraportable because it has a low voltage Pentium 1.50 GHz that uses the latest Intel 915 chipset M. ThinkPad keyboards are sealed and sit in a tray so that spills do not reach the electronics below. Surveillance equipment from the X41 all the necessary functions more quickly than one might expect from a top of the convertible Tablet PC line. Needless to say, this does not sound very good. Using headphones is a very clever idea, it is difficult to understand even talk of dialogue, because the volume is low and a metallic sound. We tested the X41 Tablet ThinkPad X41 High Capacity Battery 8-cell Li-Ion battery. We recommend this battery in the standard 4 cell battery for users who want to leave you need an outlet for more than 2-3 hours. The following table shows the 8-cell battery restults with battery voltages Eater Pro utility reference in "Classic" all the hardware components of X41.

 

Replacement For Lenovo/IBM ThinkPad X41 Laptop Battery

Lenovo thinkpad x41 battery(14.4V ,4400mAh) with Lithium ion Pack For Laptop Power

• Fit Models:Thinkpad X40 X41 Series Laptops.


• Fit Codes: 92P0999 , 92P1000 , 92P1001 , 92P1003 , 92P1005 , 92P1009 , 92P1080 , 92P1119 , 92P1146 , 92P1148 , FRU 92P0998 , FRU 92P1002 , FRU 92P1078 , FRU 92P1143 , FRU 92P1145 , FRU 92P1147 , FRU 92P1149 etc.


• Note 1: The battery can not fit thinkpad x41 Tablet PC and thinkpad x40 Tablet PC


• Note 2: For Lenovo/IBM ThinkPad X41 battery Qulity Assurance! 1 Year Warranty! 30 Days Money Back!

Replacement For Lenovo ThinkPad X41 Tablet Battery

Lenovo thinkpad x41 teblet battery(14.4V ,4300mAh) with Lithium ion Pack For Laptop Power

• Fit Code:73P5167 , FRU 92P1082 , FRU 92P1083 etc.


• Fit Models:Thinkpad x41 Tablet 1866 ,Thinkpad x41 Tablet 1867 ,Thinkpad x41 Tablet 1869 ,Thinkpad x41 Tablet


• Note 1:The battery can not fit thinkpad x41 series and thinkpad x40 series laptops.


• Note 2: For Lenovo/IBM ThinkPad X41 tablet battery Qulity Assurance! 1 Year Warranty! 30 Days Money Back!

Up to 30% off!Hi-capacity Lenovo/IBM ThinkPad X41 battery ,4400mAh Lithium-ion battery from Japanese ,longer battery life ,no memory effect.ThinkPad X41 laptop battery can supply lasting energy 2-3 hours for original Lenovo/IBM ThinkPad X41 laptop.Lenovo/IBM ThinkPad X41 battery have passed stringent quality assurance procedures and achieve international standards CE , UL Listed , and/or ISO9001/9002 certification.100% compacompatible with original Lenovo/IBM ThinkPad X41 laptop.

• 100% compatible with original ThinkPad X41 laptop battery.


• Higher quality and capacity battery replacement.


• Special offer ,Lenovo/IBM ThinkPad X41 battery up to 30% off.


• 1 Year Warranty.30 Days Money Back for every new Lenovo/IBM ThinkPad X41 laptop battery .

 

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Li-ion battery hybrid motor car market prospects

Li-ion battery hybrid motor car market prospects

Japan Automobile Research Institute recently announced that Japan will take the lead in the popularity of hybrid vehicles in the lithium battery, which will enable Japan has led the world in countries in hybrid vehicle technology icing on the cake.

Li-ion battery than the current mainstream nickel metal hydride battery size and weight have reduced by about half, to improve the hybrid's fuel efficiency is important, has become the first choice for the next generation of hybrids. At present, around the production of lithium batteries, the world's car manufacturers and the electrical, electronics companies have developed in an increasingly competitive.

Japan's Hitachi said it would invest 20 billion to 30 billion yen by 2015, the current lithium-ion batteries for hybrid production capacity by about 70 times.

Allegedly, Hitachi will increase investment and expand its business by Tokai, Ibaraki Prefecture is located in capacity, as soon as possible new high-capacity lithium battery production, the product will be mainly provided to the U.S. General Motors Corporation.

Earlier, Germany announced that from 2009 to launch a 360 million euros in the automotive lithium battery development program, almost all German cars, and energy giant, will carry information to join. The German government said the plan, marked Germany will enter the electric car era.

At the same time, Daimler and RWE energy company also announced that it will work together to build 500 electric car charging stations. German auto industry alliance is expected of Germany before 2012, commercial production of electric vehicles will be pulled off.

The main advantage of electric vehicles is both energy saving, but also produce a wide range of environmental effects. Studies have shown that the use of electric vehicles to pass one kilometer road, the cost of needed gasoline cheaper than 80-90%, the amount of carbon dioxide emitted by vehicles is generally 70%.

Recently disclosed METI, Japan, in 2010 and strive for the next generation of the new lithium battery electric vehicles.

May 15 this year, Toyota, Nissan Motor Co. and Matsushita Electric Industrial Co. and other related businesses signed an agreement to jointly develop a unified specification of the new generation of automotive lithium batteries, and plans to mass production within 2 years. Toshiba decided to spend 500 billion yen to develop electric cars with lithium-ion batteries, which power will be two years into the efficient semi-commercial production is planned for 2011 will be increased for high-performance lithium-ion batteries with different characteristics three categories, namely, in addition to the current ordinary type, the respective development support will also be hybrid and electric vehicles high output and high energy density power type lithium ion battery type.

Popularity of electric vehicles is a key issue is the need to build enough power to add facilities. To this end, Tokyo Electric Power Company announced that it will take the lead in the infrastructure, first built in the metropolitan area next year, more than 200 charging stations, three years after the increase will go to more than 1000. Japan's major car companies have responded positively involved in the study and engineering, and eagerly look forward to "de-oil" era came to Japan as soon as possible. At present, the Tokyo Electric Power Company has successfully developed a large-scale rapid charger, every 10 minutes fully charged, can travel the distance is 60 kilometers, so charging time is shortened, and further accelerate the increasing use of electric vehicles in Japan the pace.

It is reported that the establishment of a charge for each facility cost 400 million yen. Tokyo Electric Power Company for supermarket parking lot in Japan, convenience stores and post offices and other public places charging facilities gradually building to facilitate people off shopping and errands can get the car added power.

According to Japan Automobile Research Institute predicted the popularity of hybrids according to the present projections, by 2020, hybrid car in Japan will reach about 360 million. High-performance lithium batteries have been promoted if the popularity of hybrid vehicles reached 7.2 million are likely to further levels.

Local media commented that if the Japanese lithium batteries in a new generation of vehicles to obtain ISO certification opportunities and be in charge, and the enterprises will benefit immensely.

International trade that the electric car market in the next decade to develop into what kind of scale, will depend on whether the cost of lithium batteries down quickly, but an indisputable fact is that the potential of this market will be huge enough to meet the needs of large-scale production.

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Dell Inspiron 1420 Laptop Reivew, via laptopsbattery.us blog

Dell Inspiron 1420 Laptop Reivew, via laptopsbattery.us blog

 

The 14 "Inspiron notebook mobility. With its ultra-slim, lightweight notebook designed for your lifestyle to suit the road with a powerful dual-core processor, batteries, long-term advanced wireless technology. When you do your banking from a coffee or you want to connect the world to your favorite park, the new 14 "Inspiron can register online at any time, anywhere. Use your laptop to explore, create and play with a fully loaded selection of media features including options such as Blu-ray discs, high-performance graphics, a webcam or built-in 2 mega pixels. Whether you secure the services of backup data demand rigorously tested quality or smart and support, Dell has a solution, the smart, simple and according to their needs.

Dell Inspiron 1420 Laptop Specifications:

• Screen: 14.1-inch WXGA+ (1440 x 900) UltraSharp TFT Display with TrueLife (glossy finish)


• Processor: 2.2GHz Intel Core 2 Duo T7500 (4MB L2 Cache,800MHz FSB)


• Hard Drive: 160 GB hard drive (5400RPM)


• Memory: 2GB RAM (PC5300, 667 MHz, DDR2 SDRAM) — 4GB max memory


• Optical Drive: DVD+-R Double layer / DVD+-RW Drive (Blu-ray drive optional)


• Ports and Slots: Four USB 2.0, one FireWire 400 port, one ExpressCard slot, one S-Video, one VGA, one 8-in-1 card reader, headphone / line-out, microphone-in, modem, 10/100 Ethernet


• Wireless: WiFi (802.11a/b/g/n), Bluetooth 2.0


• Graphics: NVIDIA GeForce 8400M GS


• Camera: 2.0 megapixel webcam


• Operating System: Windows Vista Home Premium


• 6-cell 56WHr Li-Ion battery, 9-cell 85WHr Li-Ion dell laptop batteries


• Dimensions: 13.13" x 9.61" x 1.26"-1.53" (Width x Depth x Height)


• Weight: 5.39 pounds

 

The Dell Inspiron 1420 is the design of consumer laptop latest 14.1 "to deliver performance, durability and a touch of style at an affordable price. With Intel Core 2 Duo processor (Santa Rosa) processors, nVidia available on Blu -ray dedicated graphics available to build reasonably difficult, and eight colors. The Dell Inspiron 1420 offers a wide range of Core 2 Duo (T5250 Intel Core 2 Duo 1.5 GHz to 2.2 GHz Core 2 Duo T7500). There are two 14.1 "1280×800 WXGA and 1440×900 WXGA. The notebook can take up to 4 GB of RAM but Dell only offers 32-bit versions of Microsoft Windows Vista. So do not wait, use all 4 GB

The good: Newly redesigned Inspiron line adds Centrino Duo CPUs and color choices, highly configurable with plenty of networking opportunities, the option of discrete graphics, excellent battery life.

The bad: Not as radical as the new Dell XPS laptop, low entry price, but everything from the webcam, Bluetooth additional restructuring costs.

Conclusion: Dell Inspiron converted line is the new 14-inch Inspiron 1420 laptop that has a makeover inside and out. Extensive configuration options mean that virtually any current user, a system to fit your budget.

 

Decay before 1420, as "traditional design of Dell" can be described with simplified lines. The Inspiron 1420 lid does not latch to keep closed, but the hinge mechanism works well and firmly holds the lid. Core 2 Duo processors that come with the Inspiron 1420 provide more than enough performance, even at a lower end 0.5 GHz T5250. The T7500 processor at 2.2 GHz in our test unit packs an impressive coup and included optional NVIDIA 8400M GS dedicated graphics card provides enough power for HD video and serious gaming. The 14.1-inch glossy screen in our test unit is a gorgeous WXGA 1440 x 900 pixel display with excellent contrast and vivid colors. Several Inspiron 1420 owners in our discussion forums claim that the standard WXGA 1280 x 800 pixels suffering endured by "Korn", but our high-resolution screen of any problems. The full-sized keyboard is solid in 1420, almost without bending. The keys have minimal travel with excellent cushion and response, and are not essential for the home, End, Page Up and Page Down dedicated. The 1420 also has special media buttons above the keyboard and speakers. The 1420 has built-in stereo sound via speakers located above the keyboard. With the speakers located at the top of the interior in this way, tend to set the tone against direct and offer reasonably good to hear. The 1420 works very quiet, even with the 2.2 GHz Core 2 Duo. The fan heat remained calm and under control. Ultimately, but not perfect the 1420 is a solid notebook that want to be able to be an excellent system, back to school.

 

Battery

Battery life in 1420 with the standard 6-cell battery was only average at best. Even with the brightness of the screen less than half, wireless, and Vista power settings set to maximize battery life, the engine of 1420 to just over 2 hours (2 hours and 3 minutes). With the same parameters of the 9-cell battery provided 3 hours and 51 minutes from time. If the size and weight are the major concerns of your trip, we recommend purchasing the 9-cell battery for the dell laptop insprion 1420.

Replacement For dell inspiron 1420 battery

[4400/6600mAh,11.1V] Brand new dell inspiron 1420 battery rechargeable

Dell inspiron 1420 laptop battery is a high quality rechargeable replacement battery which can 100% compatible with the OEM inspiron 1420 battery which can works with a lot of dell notebook laptop computer. dell inspiron 1420 laptop batteries are warranted for a full year to ensure your complete satisfaction.

• Brand: dell (Not OEM)


• Category: laptop batteries


• Chemistry: Li-ion


• Volt: 11.1V


• Capacity: 4400/6600mAh


• Net Weight: 313.00 g


• Dimension: 209.5 x 47.9 x 20.6 mm

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Application skills of the laptop battery cost analysis method

Application skills of the laptop battery cost analysis method

With the rapid proliferation of notebook computers, notebook batteries by the majority of the growing importance of consumer attention. Give a good laptop battery is not only the user's mobile commerce and digital lives of great convenience, but also can eliminate the future use of insecurity. A piece of notebook batteries do not, can not be met except for the users of its mobile digital life, it will also bring the use of hidden dangers, especially security issues. A battery explosion caused the destruction of a notebook, or even lead to more serious consequences.

So choose a good laptop battery is significant. However, the battery update the original price of the hundreds of thousands, many users choose a better price in the market face replacement products. But the two maintenance market price of the replacement products from 100 - 800 range, making it difficult for consumers to judge the quality from the price of the good or bad.

In this essay, by analyzing the composition and laptop battery designed to help people in from the current market price of laptop battery on businesses and other considerations to choose the best laptop batteries.

Lithium-ion laptop battery is 18650 batteries with protection circuit board and composed of PVC plastic shell, the following analysis of the cost of an item:

1.18650 2200,2400,2600 mah lithium-ion battery is divided into three types, a typical laptop battery assembly with 8 batteries (series 2 and 4). If it is genuine original batteries, usually Japanese and Korean manufacturers or domestic regular grade A 18650 batteries, these batteries have the quality assurance and safety through rigorous testing, the cost is usually in the U.S. according to the different capacity of 3 yuan between left and right one, a normal laptop battery (8) costs about 24 U.S. dollars, equivalent to RMB: 170 or so.

If B grade or disassemble the battery (installed after the quality of the batteries, Japan, South Korea has the quality of the safety issues and even batteries are often dumped in China) the cost price of between RMB 10-15 Such batteries or re-assembly after assembly, an 8 batteries notebook batteries cost 80-120 yuan. In addition, even worse, some unscrupulous manufacturers to 18650 with more poor, often have security problems, it is easy to blast out of your notebook assembly of low-quality products, and its eight batteries in the laptop battery can cost around 50 yuan .

2. Laptop battery on the PCB panel, a good control panel, you can extend laptop battery life to protect the security, the cost is usually about 80 yuan; if it is a bad battery control panel PCB dysfunction, or disassemble board, the cost of 30 yuan,

3. PVC glue on the shell, the cost of a good plastic shell of 30 yuan, the bad low-quality goods at 10 yuan.

Summing up the appeal, there is a good quality assurance by the notebook battery (8) the cost should be around 280, so a good non-Original Notebook Battery (8 batteries) and a lower price, including operations cost and profit to reach the end consumer's hands should be 350-550 yuan; if it is low-quality notebook battery products B (8) costs 120 yuan, the price for 200-300; If the minimum quality laptop battery (8) costs for the 80 or so, the price is usually between 100-200.

China-made lithium-iron batteries will be available or gave birth to tens of billions of market

Recently, the Guangzhou-resistant Battery Technology Co., Ltd. announced when the first fully independent research and development of domestic manufacture of high-energy lithium-iron battery time. It is understood that the battery is a lithium iron until the beginning of this century, developed by the United States and Europe to replace alkaline batteries in high-tech products, the discharge performance of alkaline batteries commonly used in the present 7 times for 42 traditional carbon-zinc batteries times. In addition. Lithium iron battery does not contain any toxic or hazardous substances, lead, mercury content is zero, the green environmental performance outstanding.

According to reports, this lithium-iron batteries will be made half the price of imported brands sold in the country to promote the rapid spread of this market, long-term goal is to replace a wide range of alkaline batteries. Experts predict that the future replacement of this technology gave birth to a hundred million yuan will be a huge market.

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Canon EOS 350D Camera Review

Canon EOS 350D Camera Review

 

Canon EOS 350D Digital Camera Review: Like a digital SLR camera Canon thunder affordable introduced in 2003. Thus, Canon has had a rival March, Nikon, who responded immediately with the D70. Earlier this year, the successor to the Canon EOS 300D, according to its policy, a new model to the market every year and a half. The Canon EOS 350D is an improved version, but it is a revolutionary camera. The sensor is the same as the Canon EOS 20D, but its size is slightly lower. Other internal features such as the processor has been updated. But the most striking aspect of this course is the appearance of the body. The Canon 350D has visibly reduced and their appearance is much better than its predecessor.

Specification

• 8.2 Megapixel, 22.2 x 14.8 mm sensor, 12-bit RGB CMOS offers images of 3456 x 2304 pixels. Effective number of 8.0 megapixels and an aspect ratio of 3:2.


• SLR digital camera with interchangeable lenses (supports all Canon EOS series). focal length multiplier of 1.6 compared to a 35mm camera.


• Variable ISO (100, 200, 400, 800 and configuration of 1600).


• Show TTL optical viewfinder with detailed information, diopter adjustment and depth of field preview.


• 1.8-inch low-temperature TFT LCD with 115,000 pixels.


• Auto, Program Auto, Aperture Priority, Shutter Priority, Depth of Field AE and manual exposure control, with portrait, landscape, close-up, Sports, Night Portrait and Flash Off programmed modes.


• Works of "priority shooting mode, ie no separate" Play "to view images. Images can be viewed between shots, and even if the camera shows a picture or a menu, and press the shutter button the camera immediately.


• Series recordings capture up to 14 images at 3 frames per second (with shutter speeds from 1 / 250 second or faster).


• Variable white balance with Auto, six presets and manual order (read from a neutral gray or white card) and a tool for color correction.


• TTL autofocus with seven AF points selected manually or automatically. One-Shot AF, AI Servo AF, AI Focus AF and manual focus with AF assist, depending on the shooting. Working range from 0.5 to 18 eV at ISO 100


• E Retractable type TTL flash with red eye reduction. Guide Number at ISO 100, m 13 / 43 m / includes flash-angle in the domain of a 17mm lens. Housing shoe for external flash connection of EX Speedlite flash units.


• Flash exposure lock function. (FEL)


• external shoe supports E-TTL II, FEL, and FP (high speed sync) flash with the flash Canon EX series.


• Red-eye reduction through integrated lighting.


• TTL exposure with a silicon photocell up to 35 zones. Multi-segment 35 measures in all AF points, Center-weighted, or nine percent of land area linked power meter. Measurement Range EV 1-20 (at normal temperatures, EF 50 mm f / 1.4 USM, ISO 100).


• Adjustable exposure compensation from -2 to 2 EV in 1 / 3 or 1 / 2 in all shooting modes.


• Auto Exposure Bracketing (AEB) from -2 to 2 EV in 1 / 3 or 1 / 2 in all exposure modes.


• white balance bracketing. (JPEG)


• Shutter speeds of 1 / 4, 000 to 30 seconds and a bulb setting for long exposure times.


• Electronic timer with a fixed duration of 10 seconds.


• Optional external dslr battery grip / trigger to add the secondary wheel control, and AE and focus point buttons for vertical shooting format.


• Image storage CompactFlash Type I or II, IBM Microdrive compatible


• USB 2.0 connectivity with TWAIN driver for PC and Adobe Photoshop plug-in for Macintosh. NTSC / PAL selectable connectivity. E3 remote control socket and IR window on the remote control.


• JPEG 24-bit and 36-bit RAW file. Available resolutions are: 3456 x 2304, 2496 x 1664, and 1728 x 1152nd


• Backlit LCD screen for reading the data, for ease of use in the dark.


• DPOF (Digital Print Order Format) and DCF (Design rule for Camera File System) compatible.


• Canon direct photo printing.


• The camera is sold separately or as part of a kit with lenses and accessories.

 

The Canon Digital Rebel XT in the great success of the original Digital Rebel, build a device that has literally transformed the world of digital cameras on the head when introduced. A six megapixel SLR that sold with a goal of less than $ 1,000, the Digital Rebel not only Nikon, Olympus and Fuji in the D-SLR business question, but has pledged to reduce drastically in the all-in " prosumer "market. After the names of its highly popular "Rebel" line of SLR cameras, entry level, the Digital Rebel offers many new features and enhancements to the 10D same exposure, but something to keep costs under control and ensure some differentiation between the rebels and the scale of his brothers at a higher price.

When the original Digital Rebel has ceased, the Digital Rebel XT now runs and improved. The Rebel XT CMOS sensor 8.2-megapixel (8.0 megapixel images online) for an even higher resolution, better manual control over AF and metering modes, an adjustable EV step size, flash exposure compensation, and has a custom menu function to adjust the unit. There is a vast improvement over its predecessor, although the original Digital Rebel excellent camera in its own right. Read on for more details!

 

As digital cameras are smaller, less space for buttons, controls, indicators, and - the handles. One of the most controversial aspects of the EOS Rebel XT / 350D is the size of the handle. And yet, the size of the grip in relation to what we are accustomed. Photographers use a Canon bodies Series 1 are the Canon EOS Rebel XT / 350D is very low grip. P & S enthusiast photography the handle is similar to what is used - although the objective of greater diameter may leave less space than a few fingers avid P & S digital cameras. users of Pocket P & S is the handle is too large. You can not get their fingers deep into the handle that large organizations with Canon. By simply turning the right hand rear of the camera only gives you a good hand grip size (my opinion). My finger slides easily in a short lower body. Canon has a volume of grip small sacrifice to achieve a compact design - you can not get a grip size of a series in a small camera(camera battery).

I want Canon Canon EOS Rebel XT were added grip / handle is rubber 350D 20D. The 300D Digital Rebel has a rubber grip, but not as sticky as the handle 20D.

A disadvantage of the small handful of difficulties in tracking large vessels, while only handle increases. The purpose of the controls of the organization, not the reverse. The solution to this problem is simply in order to maintain control. Canon BG-E3 Grip (see Annex below) is a better solution, but the small size then sacrificed in part. Attached to the BG-E3, the handle is very nice image size with a good feeling. The horizontal format is better than without the grip BG-E3, but not as nice as the handful of portraits. The BG-E3 can be removed quickly installed / to make the best of both worlds. To manage a vast landscape, choose the 20D or 300D.

The Canon EOS Rebel XT / 350D style is very attractive and good in general / finish and build quality is very good. Of course, it is robust, weatherproof, waterproof Canon 1-series, but there is a difference in the cost so great. And while it might not be as robust as the 20D, I do not want to fall either to a 20D. The slightly rough, matte finish plastic exterior feels cheap / low for some, but the 350D, the Rebel XT is not authorized and has no interest for me to build (plastic technology today is very good). A handful of high quality rubber that go in creating a greater sense of quality.

Buttons and doors have not felt the top of the line quality of a body 1 of the series, but not weak. On the issue is - do not open the door, while the 350D is written to the CF card or lose the photos posted. I consider this function as an error, but usually do not open the door when the unit is written anyway (an indicator light on the back, it is clear when it occurs). I can detect very slight movement of the body by pressing firmly on the handle in just the right place XT. Again, this is not a big problem in my opinion.

The Canon EOS Rebel XT / 350D is almost finished a little brand - in particular marks, where the bayonet is the closest to the handle.

 

Canon EOS 350D Battery Grip Replacement

• EOS 350D Grip replacement specifications :


• Voltage : 7.4V


• Capacity : 2100mAh


• Battery Type : NB-2LH


• Input : 9.0V~12.0V


• Output : 7.4V


• Dimensions : 127×70x88mm

Canon EOS 350D Battery Grip Replacement - Product information

• The canon eos 350d battery grip Replacement inbox: battery grip, 2100mAh battery, charger!


• EOS 350D Battery Grip Replacement AC charger: Input- 100V~240V AC 50/60HZ 500mA, Output - 12.5V DC 750mA.


• Product Type : Battery Grip Replacement for CANON EOS 350D/EOS 400D DSLR cameras.


• The most attractive point is that the EOS 350D Battery Grip Replacement can integrated with a high capacity 2100mAh Lithium Ion battery, which makes 2000 shots actual in one full charge and makes it a dreaming product for professional photographers.


• The Canon EOS 350D Battery Grip Replacement equipped with a vertical-grip shutter button, command dial, AE lock/FE lock, and AF point selector button to enable shooting in the same fashion as a horizontal grip.


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China's first large block of mass production of solar cells

China's first large block of mass production of solar cells

ENN Solar Energy Co., Ltd. by the development of China's first large block of 5.7 m silicon-based thin film solar cells has recently begun mass production, and exports to the United States, the European Union and other countries and regions. The size of the solar cells at the forefront in the international arena.

Family, mainly by the solar cells of crystalline silicon cells and amorphous silicon cell composed of two categories. Compared with crystalline silicon solar cells, including silicon-based thin film solar cells with amorphous silicon solar cells, including large area lighting, low production costs, highlight the advantages of low light and good power.

According to ENN Solar Energy Co., Ltd. Hong-Wen Li, general manager of manufacturing center of introduction, they produce very large silicon thin film solar cells for lighting area, the conversion efficiency has reached 8%; the same time, the main raw material products, the use of glass, crystals used per watt silicon content is only about 1% of crystalline silicon cells, dramatically reducing the production cost per watt battery.

Sharp mass production of thin film solar cell output 160,000 kilowatts

Sharp Corp. (6753-JP) on Wednesday said the company was the Japanese city of Nara Prefecture Ge mass production of thin film solar cell plant, an annual output of about 16 million kilowatts of electricity.

This kind of silicon on a glass substrate to form a new type of membrane solar cells, and are widely used in silicon solar cells compared to only 1% of the silicon.

Sharp's thin film solar cells based on a large area of about 1x1.4 meters formed glass. Up to 9% of the energy conversion efficiency, thin film solar cell industry is the most efficient.

Sharp to spend 22 billion yen formed a low-cost thin film solar cell production line. Company intends to promote solar power plants around the world.

Sharp is the world's No. 2 maker of solar cells. Year, with the thin film silicon solar cell production capacity of 710,000 kilowatts.

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Lenovo ThinkPad X40 Laptop Review, via lenovo-batteries.com blog

Lenovo ThinkPad X40 Laptop Review, via lenovo-batteries.com blog

 

The ThinkPad X40 is the smallest and IBM notebook to date. In addition to today’s society, ultraportable, the ThinkPad X31, ThinkPad X40, the only 1.25 kg (25 percent lighter than the ThinkPad X31) and weighs is about 20 percent smaller, so must it the dream machine for the frequent business travelers as tn ‘for High-end computing power or a large screen. Encased in titanium composite carbon fiber reinforced hard plastic case that is three times the strength of ABS plastic, the company offers mobile laptop users all the functions and the connection to work on the road more comfortable. Like its predecessor, the ThinkPad X40 is standard for portability, battery life and wireless connectivity in a mobile computing system, but his performance is limited.

Key Features

• Laptop Type: Ultraportable Laptop


• Use: Corporate Business • Small Business • Business


• Processor: Pentium M 1.2 GHz


• Installed Memory: 256 MB (DDR SDRAM)


• Hard Drive: 40 GB IDE, 4200 RPM


• Display: 12.10 in. XGA TFT LCD


• Operating System: Microsoft Windows XP Professional


• Mobile Technology: Intel Centrino Mobile Technology


• Weight: 2.60 lb.

Processor

• Processor Manufacturer: Intel


• Processor Type: Pentium M


• Processor Speed: 1.2 GHz

Motherboard

• Chipset: Intel 855GME


• Bus Speed: 400 MHz

Memory

• Installed RAM: 256 MB


• RAM Technology: DDR SDRAM


• Max Supported RAM: 1 GB


• RAM Speed: 333 MHz


• Installed Cache Memory: 1024 KB

Hard Drive

• Hard Drive Capacity: 40 GB


• Hard Drive Rotation Speed : 4,200 RPM


• Storage Controller Type: IDE

Display

• Display Tech: XGA TFT LCD


• Screen Size: 12.10 in.


• Display Color Support: 24-bit (16.7 million colors)


• Display Max. Resolution: 1024 x 768

Video

• Graphic Processor: Intel Extreme Graphics 2


• Graphic Bus Interface: AGP


• External Video Resolution: 2048 x 1536

Audio

• Audio Output Type: Sound card


• Audio Input Type: Microphone


• Operating System: Microsoft Windows XP Professional


• Platform: PC

Technical Features

• Expandability: 1 x Type I/II PC Card Slot, 1 x SD Card Slot, Docking Station/Port Replicator


• Expansion Ports: 4 x USB 2.0, VGA out, RJ-11 (modem), RJ-45 (NIC)


• Security Features: HDD Password, Power-On Password, IBM Embedded Security Subsystem 2.0, Administrator Password, IBM Security Slot


• Input Method: Keyboard • Trackpoint

Networking

• Networking Type: Integrated Network Card • Integrated Wireless LAN


• Data Link Protocol: Ethernet • Fast Ethernet • Gigabit Ethernet • IEEE 802.11b

Modem

• Modem Type: Modem


• Analog Modulation Protocol: ITU V.90

Battery

• Battery Run Time: 3.5 Hours


• Battery Technology: Lithium ion

Dimensions

• Width: 19.60 in.


• Depth: 8.30 in.


• Height: 1.10 in.


• Weight: 2.60 lb.

Miscellaneous

• UPC: 000435231543


• Product ID: 21898166


• Family Line: Lenovo ThinkPad

More Information

• Details: IBM ThinkPad X Series notebooks offer ultimate mobility in a versatile ultraportable. The ThinkPad X40 provides Intel Centrino mobile technology including the Intel Pentium M processor on select models, all-day battery life (up to 10 hours) on select models, and a full size keyboard in a design featuring the smallest footprint in its class. Enhancements also include the IBM Active Protection system, IBM Powered USB 2.0 Port and a Secure Digital card slot.

 

Ultra slim and stylish IBM ThinkPad X40 - despite its small drawbacks such as lack of touch screen, a full suite of business applications or the latest connections - is the professional notebook of choice for many professionals.

In general, the style and performance, IBM wins the day. The essential argument and the best feature is the large (almost perfect) keyboard. get the full sense of the sound and writing over.Coming many only 3.2 kg and 1.3 inches with a 40 GB hard drive, 256 MB of RAM installed only one inch 12.1-inch screen, but it crisp.It Bright covers the basics with a pair of USB ports, audio based on a link to a screen, SD card slot, and network and modem. There is Wi-Fi 802.11b loans (with optional Bluetooth.) Optional X4 UltraBase Dock offers an optical drive, parallel port, the third USB 2.0 port, but still no TV or Firewire output.

• Cons: No touchpad bad connections.


• Advantages: great keyboard, elegant style and quality of IBM, light and ultra portable.


• Conclusion: Despite some drawbacks, the quality of IBM and a large keyboard makes the X40 ultra-portable of choice for professionals in most companies.

 

Replacement For Lenovo/IBM ThinkPad X40 Laptop Battery

Lenovo thinkpad x40 battery(14.4V ,4400mAh) with Lithium ion Pack For Laptop Power

Condition: Brand New Shipping time:shipping Lenovo/IBM ThinkPad X40 battery usually need 5-12 days. Fit Models:Thinkpad X40 X41 Series Laptops etc.

Note: For Lenovo/IBM ThinkPad X40 battery Qulity Assurance! 1 Year Warranty! 30 Days Money Back!

Up to 30% off!Hi-capacity Lenovo/IBM ThinkPad X40 battery ,4400mAh Lithium-ion battery from Japanese ,longer battery life ,no memory effect.ThinkPad X40 laptop battery can supply lasting energy 2-3 hours for original Lenovo/IBM ThinkPad X40 laptop.Lenovo/IBM ThinkPad X40 battery have passed stringent quality assurance procedures and achieve international standards CE , UL Listed , and/or ISO9001/9002 certification.100% compacompatible with original Lenovo/IBM ThinkPad X40 laptop.

• Battery Type: Li-ion


• Voltage : 14.4V


• Battery Capacity: 4400mAh


• Battery Color: Black

• 100% compatible with original ThinkPad X40 laptop battery.


• Higher quality and capacity battery replacement.


• Special offer ,Lenovo/IBM ThinkPad X40 battery up to 30% off.


• 1 Year Warranty.30 Days Money Back for every new Lenovo/IBM ThinkPad X40 laptop lenovo batteries .

 

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A new integrated battery charge and discharge control equipment

A new integrated battery charge and discharge control equipment

As a number of military applications large uninterruptible power equipment, energy consumption, so battery packs commonly used in serial mode to avoid excessive current. Serial battery charge and discharge with a single battery charge and discharge is different in different cell battery if the differences were not taken seriously it will cause the battery pack is less efficient, reducing battery life; consider the application of military equipment, the environment special requirements, not on the market today meet these requirements an integrated charge and discharge control equipment, so there could very well designed to meet these needs a new type of integrated battery charge and discharge control equipment.

1 System Overview

The integrated battery charge and discharge control equipment for the control of the MC68HC908SR12 microcontroller core, ancillary control design using FPGA. Including power supply circuit, constant current constant voltage charging control unit, balancing the discharge control unit, the central control unit, FPGA auxiliary control unit, temperature detection circuit, man-machine interface circuit. Integrated battery charge and discharge control equipment, primarily for military applications, a larger number of uninterruptible power equipment, energy consumption, commonly used in the case of the battery power supply in series design. Considered in the design process focused on the balance of the battery characteristics, to improve the series battery-powered group of efficiency and prolong its service life. Figure 1 is a block diagram of the system.

2 Hardware Design

Here on the charge and discharge control equipment, integrated overview of the hardware design process description.

2.1 Power Circuit

Charger using switching power supply as power supply equipment. Switching Power Supply using Pulse Modulation PWM (Pulse Width Modulation) and the MOSFET, BTS, IGBT design and other electronic devices. Switching power supply high degree of integration, with a voltage regulator, current limiting, thermal protection. Compared with the linear power supply input voltage range (typically up to AC 85 ~ 265 V), small size, light weight and high efficiency. Meanwhile, the easy-to-FPGA auxiliary control unit to control it.

2.2 Charge Control Unit

Charging control unit using the current constant current constant voltage charging more mature circuit design is completed. Figure 2 is a circuit schematic. Constant current circuit from Motorola's microcontroller chip MC68HC908SR12 analog circuit module and the chip of the MOSFET switch, Schottky diodes, filter inductors, filter capacitors and other components composition. Analog circuit module is Motorola's microcontroller-specific parts MC68HC908SR12, which consists of the input multiplexer, programmable amplifier groups, on-chip temperature sensor, current detection circuit. The total magnification the amplifier can be programmed 1 to 256. Amplifier input can choose 2 analog input pin (ATD0, ATD1), on-chip temperature sensor, analog input (VSSAM). ATD0 and VSSAM can be connected between a current sense resistor for measuring the external current, it also connected to the current detection circuit, when the current exceeds a specified value and generate an interrupt when the output signal.

In the charge before the start of pre-processing stage, according to the different characteristics of the battery is detected, the software select the appropriate charging algorithm, the charging algorithm assisted by the control unit MCU and FPGA implementation. After the start of charging, the software timer capture the voltage sensing resistor R value, calculated that the output of single chip set control parameters SR12. Meanwhile, the current real-time detection of charge current detection circuit, when the current exceeds a specified value generates an interrupt when the SCM in a timely manner by the SR12 off the charge current to achieve constant current charge control.

Equalizing charge is a comprehensive control of the charge and discharge an important feature of the device. In the charging process, the quality is not the same as the battery capacity of the small, poor quality of the battery terminal voltage during the charge into the same voltage will appear after power up the battery more than the other, and if no measures are taken, they will be the voltage difference will increase, as well as one of the safety of the battery very quickly reach the required voltage, the charging process will be forced to stop. At this time of high pressure should stop charging the battery, that is a balanced charge. This will help restore damaged cells within the battery so that the charging process can go smoothly.

2.3 Discharge Control Unit

Discharge control unit are 2 parts, one flyback balance discharge circuit, can achieve the balance of battery discharge. Equilibrium discharge is the integrated charge and discharge control equipment, an important feature. In the discharge process, due to individual differences in the battery, and if no measures are taken, the battery pack inside the battery of individual differences will become increasingly clear that this would reduce the efficiency of the battery pack, the service life reduced. Returning to the discharge control unit flip-firing circuit design, the schematic diagram shown in Figure 3, the inductance of the circuit itself has a terminal voltage of each contain characteristics (also known as the relaxation of the circuit back) battery discharge the battery can balance the individual discharge. This will help restore the damaged unit within the battery, improving efficiency and battery life. Second, over-discharge protection circuit that can be achieved over the battery discharge protection. Figure 4 is the battery over-discharge protection circuit diagram, when the terminal voltage detection circuit detects the voltage drops below the set of safe discharge voltage, the discharge circuit protection circuit can be cut to achieve the protection of the battery.

2.4 The temperature detection circuit

During charging, the battery temperature will increase with the increase of charge capacity, particularly near the termination charge, temperature, rate of change of △ T / △ t most, this feature is to determine whether the battery is filled with one of the main conditions. Therefore, produced by National Semiconductor's single-chip design of high accuracy digital temperature sensor LM92 temperature detection circuit. The circuit diagram shown in Figure 5.

2.5 man-machine interface unit

(1) keyboard response circuit

Response to the circuit design of the keyboard, use MC68HC908SR12 MCU PORT D (PTD6 and PTD7) port keyboard interrupt (KBI). According to the actual situation, the microcontroller in the keyboard interrupt MC68HC908SR12 enable register KBIER the corresponding value in the write, write "1" means interrupt enable, write "0" can not be interrupted. Keyboard interrupt to allow the port, MC68HC908SR12 SCM will pull its internal 30 kΩ resistor, this circuit design the keyboard response is very simple, should be noted that application software routines to increase the keyboard jitter elimination, to prevent misuse.

(2) status display circuit

Status display circuit design using microcontroller MC68HC908SR12 PORT A (PTA0 ~ PTA5) port, LED direct drive capability. PORT A first set when programming the work of the state, the LED control register is written to the corresponding value of LEDA, write "1" can directly drive LED, write "0" as the standard I / O ports. Have at each stage in the charge status display, such as: the battery is being charged, the battery temperature is too high due to enter the temperature status.

2.6 FPGA central control unit and auxiliary control unit

FPGA central control unit and auxiliary control unit integrated charge and discharge the main control equipment to achieve the status of the control transfer function. Depending on the sensor for different conditions, different written instructions, conversion of different modes.

3 Software Design

Shell discharge control equipment, software, integrated design that is: the various functional components of modular programming, software process using interrupted work. The aim is to make application process clear, readable, easy-to-functional debugging and product maintenance and upgrades. This software mainly consists of initialization, preprocessing, control algorithms, charge and discharge 4 parts.

3.1 Initialization

The initial phase of the program should first initialize the microcontroller MC68HC908SR12 operation, including setting I / O port input / output status, set the PLL phase-locked loop circuit parameters, set the timer TIM parameters.

3.2 Pretreatment

Preprocessing stage is the integrated charge and discharge control equipment, the preparation phase before work. Program is initialized, the first microcontroller based on the use MC68HC908SR12 internal temperature sensors detect ambient temperature. When the ambient temperature is too low or too high, it can not discharge the battery, otherwise it will damage the battery. Then, set the A / D converter and channel parameters to detect the battery voltage. Experience in the testing data with the theoretical value comparison to determine the type of battery and is connected correctly. Of low battery voltage, the use of short pulse current charge, which will help activate the chemical reaction within the battery material, part of the restoration of damaged battery cell.

3.3 The charge and discharge

According to instructions given by the control unit, the charge and discharge. Integrated charge and discharge device in the hardware circuit design to take into account the balance charge, balance discharge and discharge protection, etc., so when given the appropriate software design considerations.

3.4 Control Algorithm

MC68HC908SR12 control algorithm is mainly controlled auxiliary control unit MCU and the FPGA, write the appropriate command, control, charge and discharge coordination of each module integrated device.

4 Conclusion

The integrated battery charge and discharge control equipment designed to take full account of the series battery charge and discharge the balance of effects can be applied to series battery charge and discharge control, can improve the efficiency of the battery pack in series, extending its life; taking into account that the main charge and discharge control equipment with integrated uninterruptible power supply equipment for military use, in its design and taking into account the complexity of military applications and particularity, and thus, the battery charge and discharge in the dual-use integrated control equipment has wide range of applications.

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