Archive for July, 2009

History of laptop battery

Posted by admin on July 29, 2009
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Which is actually an electric cell, is a device that produces electricity from a chemical reaction. Strictly speaking, a dell GD761 consists of two or more cells connected in series or parallel, but the term is generally used for a single cell. A cell consists of a negative electrode; an electrolyte, which conducts ions; a separator, also an ion conductor; and a positive electrode. Continue with How Batteries Work/Battery Types
Timeline of History

1748 - Benjamin Franklin first coined the term “battery” to describe an array of charged glass plates.

1780 to 1786 - Luigi Galvani demonstrated what we now understand to be the electrical basis of nerve impulses and provided the cornerstone of research for later inventors like Volta.

1800 - Alessandro Volta invented the voltaic pile and discovered the first practical method of generating electricity. Constructed of alternating discs of zinc and copper with pieces of cardboard soaked in brine between the metals, the voltic pile produced electrical current. The metallic conducting arc was used to carry the electricity over a greater distance. Alessandro Volta’s voltaic pile was the first “wet cell Dell inspiron 6400 battery, sony vgp-bps2c ” that produced a reliable, steady current of electricity.

1836 - Englishman, John F. Daniel invented the Daniel Cell that used two electrolytes: copper sulfate and zinc sulfate. The Daniel Cell was somewhat safer and less corrosive then the Volta cell.

1839 - William Robert Grove developed the first fuel cell, which produced electrical by combining hydrogen and oxygen.

1839 to 1842 - Inventors created improvements to batteries that used liquid electrodes to produce electricity. Bunsen (1842) and Grove (1839) invented the most successful.

1859 - French inventor, Gaston Plante developed the first practical storage lead-acid that could be recharged (secondary). This type of HP Pavilion zv5000 battery is primarily used in cars today.

1866 - French engineer, Georges Leclanche patented the carbon-zinc wet cell called the Leclanche cell. According to The History of Batteries: “George Leclanche’s original cell was assembled in a porous pot. The positive electrode consisted of crushed manganese dioxide with a little carbon mixed in. The negative pole was a zinc rod. The cathode was packed into the pot, and a carbon rod was inserted to act as a currency collector. The anode or zinc rod and the pot were then immersed in an ammonium chloride solution. The liquid acted as the electrolyte, readily seeping through the porous cup and making contact with the cathode material. The liquid acted as the electrolyte, readily seeping through the porous cup and making contact with the cathode material.”

1868 - Twenty thousand of Georges Leclanche’s cells were now being used with telegraph equipment.

1881 - J.A. Thiebaut patented the first dell inspiron E1505 battery with both the negative electrode and porous pot placed in a zinc cup.

1881 - Carl Gassner invented the first commercially successful dry cell (zinc-carbon cell).

1899 - Waldmar Jungner invented the first nickel-cadmium rechargeable.

1901 - Thomas Alva Edison invented the alkaline storage sony VGP-BPS2C battery.

1949 - Lew Urry invented the small alkaline.

1954 - Gerald Pearson, Calvin Fuller and Daryl Chapin invented the first solar.

Alessandro Volta

Biography of Alessandro Volta the inventor of the first practical in 1880.

Alkaline

Lew Urry developed the small alkaline in 1949. The inventor was working for the Eveready Co. at their research laboratory in Parma, Ohio. Alkaline batteries last five to eight times as long as zinc-carbon cells, their predecessors. This was not a patentable invention, since Volta and others long ago created the principles of batteries.

Solar

A solar converts the sun’s energy to electricity. In 1954, Gerald Pearson, Calvin Fuller and Daryl Chapin invented the first solar. The inventors created an array of several strips of silicon (each about the size of a razorblade), placed them in sunlight, captured the free electrons and turned them into electrical current. Bell Laboratories in New York announced the prototype manufacture of a new solar laptop battery . Bell had funded the research. The first public service trial of the Bell Solar began with a telephone carrier system (Americus, Georgia) on October 4 1955.

The history of photovoltaics includes the discovery of the solar. PV is the technological basis for solar power.

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Recomand new laptop batteries

Posted by admin on July 26, 2009
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Manufacturers recommend to trickle charge a nickel-based DELL laptop battery for 24 hours when new and after long storage. This service brings all cells to equal charge level and redistributes the electrolyte to remedy dry spots on the separator brought on by gravitation of the electrolyte. It is advisable to verify the capacity with a battery analyzer before use. This is especially important in critical applications dell Inspiron 630m battery , dell Inspiron 6400 battery .

Cycling (priming) is recommended to regain lost capacity after a nickel-based laptop battery has been stored for 6 months or longer. A slow charge followed by one or several discharge/charge cycles will do this. The recovery rate is governed by the condition under which the battery was stored. The longer and warmer the storage temperature, the more cycles will be required. The Prime program of the Cadex battery analyzers automatically applies the number of cycles needed to regain full capacity.

Nickel-based batteries are not always fully formed when leaving the factory. Applying several charge/ discharge cycles through normal use or with a battery analyzer completes the forming. The number of cycles needed to attain full capacity differs between cell manufacturers. Quality cells perform to specification after 5-7 cycles. Those lacking formation may need 50 or more cycles to reach acceptable capacity levels dell Inspiron 700m battery ,dell Inspiron 710m battery. laptop battery performance. Excessive cycling should be avoided because of wear-down effect.

What is the difference between priming and forming? For the user, both symptoms manifest themselves as insufficient capacity. The difference may be explained in that forming needs to be done only once when the battery is new, while priming must be repeated after each prolonged storage.

Lithium-ion batteries deliver full power after the initial charge. Manufacturers of lithium-ion cells insist that no priming is required. However, priming is beneficial as an initial start and to verify

The internal protection circuit of lithium-ion batteries is known to cause some problems after a long storage. If the battery is left discharged after use, the self-discharge will further drain the pack and eventually drip the protection circuit at about 2.5 volts per cell. At this point, the charger will no longer recognize the battery and the pack appears dead. Advanced battery analyzers (Cadex) feature the Boost program that activates the protection circuit to enable a recharge. If the cell voltage has fallen below 1.5V/cell and has remained in that state for a few days, a recharge should be avoided for safety reasons.

To reduce the self-discharge on newly manufactured batteries, advanced lithium-ion packs feature a sleep mode that keeps the protection circuit off until activated by a brief charge. Once engaged, the battery remains operational and the advantage of the sleep mode no longer applies dell Inspiron 8500 battery, dell Inspiron 8600 battery .

Lead-acid batteries should be primed by applying a full charge, followed by a discharge and recharge. Verifying the capacity through a discharge is important, especially if the battery is engaged in critical applications such as powering medical devices. Priming is also recommended after storing a battery for six months and longer. Battery analyzers provide the priming service automatically.

It is believed that a partial or full discharge applied once every six months or so enhances the performance of lead-acid batteries. Avoid too many full discharges, as this would wear down the battery unnecessarily.

While capacity loss during a battery’s life cannot be eliminated, simple guidelines minimize the effect:

Keep batteries in a cool and dry storage area. Refrigeration is recommended but freezers should be avoided. When refrigerated, the battery should be placed in a plastic bag to protect against condensation

Do not fully charge lithium and nickel-based batteries before storage. Keep them partially charged and apply a full charge before use. Store lithium-ion at about 40% state-of-charge (3.75-3.80V/cell open terminal). Lead-acid batteries must be stored fully charged.

Do not store lithium-ion fully depleted. If empty, charge for about 30 minutes before storage. Self-discharge on a depleted battery may cause the protection circuit to trip, preventing a recharge.

Do not stockpile laptop batteries ; avoid buying dated stock, even if offered at a reduced price. Observe the manufacturing date, if available.

Never leave a nickel-based battery sitting on a charger for more than a few days. Prolonged trickle charge causes crystalline formation (memory).

Always store a lead acid battery in full-charge condition. Observe the open terminal voltage and recharge the battery every 6 months or as recommended by the manufacturer dell Inspiron 6400 battery , dell Inspiron 9400 battery .

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Guide on buying Dell Latitude D610 battery

Posted by admin on July 23, 2009
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Every laptop battery is given a power rating in order to show you, the consumer, about how long your Dell Latitude D610 battery should last before it needs to be recharged. These electrical specifications are given using volts (V) and milliAmps (mAh). For example, you may see your Dell Latitude D610 battery is given a rating of: 10.8V, 4000mAh.

Volts and milliAmp hours are used because they measure the amount of energy used by a Dell Latitude D610 battery . A volt (V) is a measurement used for the amount of pressure the positive and negative electrodes produce in a laptop battery during the process of discharging energy. Amps (A) measure the amount of resistance the energy in your Dell Latitude D610 battery produces in order to power a laptop.

You may also notice that increasing the size of the pipe and shower head without having to open the faucet all the way will produce similar results. This is an example of the amount of resistance in the flow of energy. Measuring this resistance is measured in terms of amps. In terms of a Latitude D610 battery, the amount of resistance is dependant on the size of the Dell laptop battery and the amount of energy inside.

Laptop ratings are given in terms of amp hours (Ah). Amp hours measure the length of time a Dell laptop battery will discharge energy before it needs charging. In order to adequately measure v, manufacturers use milliAmp hours (mAh). This means that every 1000mAh is equal to 1Ah. What does this mean for your new Dell Latitude D610 battery? If your original Dell Latitude D610 battery is measured at 2500mAh and your replacement Dell laptop battery is measured at 5000mAh, then your Dell Latitude D610 battery run time will double.

One way of conserving Dell Latitude D610 battery is to go to your Power Management settings icon in the Control Panel. You can shut off settings or programs you do not use. Also consider dimming your screen and shutting off your wireless card when you don’t need it. In this way, you can save your Dell Latitude D610 battery a lot.

  • Dell Latitude D610 battery brief information:
  • Dimension : 226.90 x 66.90 x 22.75 mm
  • Net Weight : 460g
  • Brand :Replacement
  • Dell Latitude D610 battery Description:
  • Voltage: 11.1V
  • Capacity: 4400mAh
  • Type: Li-ion, 6 cells
  • Number of cells: 6
  • Condition: new
  • UL certificated cells inside!
  • 100%OEM compatible, guaranteed to meet or exceed OEM specifications!
  • Dell Latitude D610 battery Warranty

    For return of non-defective Latitude D610 battery within the first 10 days from date of purchase, full refund.
    Within the whole Dell Latitude D610 battery warranty days, unartificial defective product returns are accepted for replacement, and we will afford all shipping fee.

    Keep in mind that technology constantly changes. Your old D610 battery may be rated at a lower run time than a newer one because of technological advancements that have produced longer lasting laptop batteries. For other Laptop Accessories, laptop battery or Dell laptop battery, here are some good choice:
    PA-6(Power: 70W )

  • Dell Latitude D600 battery (high quality )
  • Dell Latitude D620 battery(Voltage: 11.1V Capacity: 4400mAh Type: Li-ion, 6 cells Number of cells: 6 )
  • Dell latitude D830 battery(Valtage: 14.8V Capacity: 4400mAh)
  • Latitude D820 battery (Original)
  • Dell Inspiron 1300 Battery (Voltage:11.1V Capacity: 4400mAh )
  • Dell GD761
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    Never Run Out With a Sony Battery Pack

    Posted by admin on July 20, 2009
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    Sony has a whole plethora of products and services. It is a global brand leader in innovative technology of sound, visual and entertainment. One of the markets of Sony that has taken over the world is Sony’s own mobile and portable market. From hand phones, digital cameras, mp3 players,sony laptop battery–best example sony VGP-BPS2C and play station portables.

    Their sales on this side of the market have boomed, and more and more people are sporting the Sony brand. It has become extremely fashionable to own a Sony Ericscon product and to complete that look, you need to have a Sony battery pack to extend the longevity of your product or device,such as sony vgp-bps2c ,sony vgp-bps5a ,sony vgp-bpl2c. How many times have you run out of battery just before going to the gym, or when you are on a long commute, or when there is a perfect moment for you to take a picture. Looking at some of the reviews of Sony battery packs give you an idea of how much they can give and how much more they give over the competition.

    The technology behind the laptop battery is extremely good because they have been designed in such a way that you do not need to drain the battery completely prior to you recharging, which means that it does away with the tediousness of having to wait for the entire thing to run dry so as to not spoil the longevity or even damage the cathode inside.

    They have no “memory” so you can recharge them anytime you want. This is very convenient if it half charged but you want to start out on a trip and want a fully charged battery. This Sony replacement battery is equal to the original Sony battery that came with my Sony camera. This product is of the highest quality. For cameras, Sony battery packs have been known to provide enough battery power for as many as 130 and 140 photos, or even 2 - 3 hours of recording time, which in the world of electronic device, is quite a staggering reality. Most of the batteries are made in Japan and China, as with everything else in the world today.

    You do not need to worry about the quality and make of the battery depending on where it is manufactured; Sony has some pretty stringent quality controls and checks. Other named brands do not have the manufacturing processes, the technology and the innovation of a Sony battery pack, and you know they have the resources and the money to throw behind their R&D department to ensure that their batteries are the best in the business. Do not make the mistake of just buying any old battery pack, even unnamed ones from your local dealer. They might fail, damage or even destroy your expensive electronic equipment. There have been many horror stories circulating around about unknown battery packs suddenly exploding when being used, VGP-BPS2C battery ,so avoid that at all costs. If you need quality, reliability and a touch of assuredness that your equipment will run on and on, then get yourself a Sony battery pack.

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    Dell Latitude D420 Offers 7 Hours Of Battery Life

    Posted by admin on July 16, 2009
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    Today Dell introduced the Latitude D420, designed to succeed their Latitude X1 as the company’s premier ultraportable notebook. While slightly heaver and larger than the X1, the D420 offers more features and options like a D-family docking port, optional integrated broadband (HSDPA or EVDO), an optional biometric fingerprint reader, greater memory capacity (1.5GB),strong dell latitude D420 battery, a PC Card slot (Type I and II), and dual-core processors which will be available later this summer.

    Dell claims dell d420 battery have over seven hours of battery life , the life is longer than dell latitude d820 battery ,but be aware that their testing was performed not with the base 4-cell dell d420 battery, but the optional 9-cell dell d420 laptop battery which adds almost one-half pound to the total weight. Still, a 3.5 pound notebook that can operate for around seven hours is nothing to be ashamed of.

    The most notable absence on the D420 is the lack of an optical drive, a trait shared with the X1. However, as if to reward us for good behavior, the new model comes with a much needed PC Card slot which was sorely lacking on the X1.

    The Latitude D420 is available now and pricing starts at $1,149 USD.

    Latitude D420 Specifications

    SYSTEM

  • Processor:Intel Core Solo U1300 Processor (1.06GHz)
  • Memory:One Memory slot offering up to 1.5GB
  • Memory Bandwidth:533MHz
  • Graphics:Intel Graphics Media Accelerator 950 (Up to 224MB shared memory)
  • Display:UltraSharp WXGA (1280 x 800 resolution)
  • Additional specifications after the jump.
  • CONNECTIVITY

  • Wired:56K v924 Internal Modem ,Gigabit Ethernet network interface adaptor
  • Wireless:

  • Dell Wireless 5500 Mobile Broadband 3G HSDPA (Cingular US)
  • Dell Wireless 5700 Mobile Broadband CDMA EVDO (Verizon Wireless US)
  • Intel 3945 WiFi 802.11a/g, Dell Wireless 1390 802.11g, or Dell Wireless 1490 802.11a/g Dual-Band Mini-Cards
  • Internal Bluetooth (optional)
  • EXPANDABILITY

  • PC Card: One Type I or Type II (Supports 34mm ExpressCard via a USB interface through PCMCIA adapter)
  • I/O Ports: Serial, docking connector, 3 USB, VGA, headphone/speaker out, RJ-11, RJ-45, AC power, integrated microphone , infrared, IEEE1394, SD card slot
  • Optional Media base: Power button, Security key lock, Serial and parallel ports, VGA port, DVI port, 3 USB 2.0 ports, 1 powered USB 2.0 ports, RJ-45 port, RJ-11 port, MIC in, HP out
  • Optical Options: CDRW/DVD, 8X DVD+/-RW
  • POWER

  • Power Supply: 65 Watt or 90 Watt AC adapter with cord wrapping
  • Battery:

  • Primary 4-cell/28 WHr “Smart” Li-Ion d420 battery featuring ExpressChargeTM
  • Primary 6-cell/42 WHr “Smart” Li-Ion d420 laptop battery featuring ExpressChargeTM
  • Primary 9-cell/68 WHr Li-Ion battery
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    DELL VOSTRO 1220 PACKS FULL-SIZE FEATURES

    Posted by admin on July 14, 2009
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    Dell today announced the latest addition to its expanding line of Vostro laptops, the 12.1-inch Vostro 1220. This stylish, ultraportable laptop was designed exclusively for business travelers who are unwilling to comprise performance, battery life more powerful than dell E1505 battery and security for a thin and lightweight design.

    Available in Obsidian Black or Deep Cherry Red, the Vostro 1220 starts at a mere 3.36 lbs, is equipped with the latest Intel CoreTM 2 Duo processors and features up to 9 hours of battery life1, making it an ideal travelling companion for on-the-go, global entrepreneurs.

    According to IDC2, worldwide commercial shipments of 12-inch widescreen laptops are expected to grow almost 35 percent from 2008 to 2009. “This trend supports what Dell has been hearing from our customers,” said Sam Burd, global vice president, Dell Small and Medium Business. “Today’s globe-trotting entrepreneurs need a laptop that is powerful and long-lasting. That used to mean carrying around an ungainly device, the Vostro 1220 combines performance, built-in security and long battery life with useful features like videoconferencing to be the ideal weapon of choice for any road warrior.” The feature is very strong than previous laptop,especially its battery is longer battery life than dell E1505 battery .

    Vostro 1220: Productivity, Security and Connectivity

    Only Dell offers pre-installed videoconferencing software, Dell Video Chat, which along with the purchase of optional integrated webcam and microphone gives customers a complete videoconferencing solution.3

    More security options than similar Acer, HP and Lenovo small-business systems4 including mobility solid state drives for three times the reliability of traditional hard drives5, fingerprint readers with easy-to-use software, and multi-factor authentication and encrypted hard drives with Wave Systems software that can easily encrypt data without impacting system performance.
    802.11 draft-n wireless LAN or optional Mobile Broadband external solution for optimal connectivity anywhere your business takes you.

    Backed by dedicated and specially trained small-business sales and support experts, Dell Vostro laptops come with a 30-day worry-free return policy6,strong power laptop battery support, are available with Dell CompleteCare7 Accidental Damage Service and Dell ProSupport8services that give customers the ability to customize and tailor services to fit their technical expertise and business needs.

    Starting at €449 including VAT and delivery, the Vostro 1220 is available worldwide today.Superior battery than E1505 battery . For additional information on the Vostro 1220, visit www.dell.ie/vostro.

    About Dell

    As the visionary outcome of a true entrepreneur, Dell (NASDAQ: DELL) is committed to helping small and medium businesses solve their technology challenges, ease business pain points and draw greater value from IT. With ProManage-Managed Services, Optiplex desktops, Latitude laptops, the designed-for-small business Vostro line, energy-efficient PowerEdge servers and Small and Medium Business Solutions Center, Dell is here to support entrepreneurs every step of the way.

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    Sony begins Vaio battery recall

    Posted by admin on July 13, 2009
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    Sony has announced details of the Vaio laptop battery recall it admitted last month it was going to initiate. And Toshiba has indicated it may sue the Japanese giant in order to gain recompense for any damage it alleges may have been done to its brand by its own battery recall.

    Sony’s Vaio division announced on 29 September it was planning to recall batteries fitted into some of its notebook computers. At the time, it said it was pondering whether it would participate in the broader battery recall programme put in place independently by Sony’s battery manufacturing operation.

    Sony Japan today asked anyone who owns a VGP-BPS2B(sony replacement battery can fit it,such as sony vgp-bps2c ,vgp-bps2a , vgp-bpl2c) or VGP-BPS3A battery pack to return the unit to the company. Some have been sold on their own, others were bundled with a variety of Vaio notebooks. The recall only applies to certain battery-pack serial numbers, Sony said.

    Sony Japan said it expects to replace around 90,000 batteries in the Asia Pacific region. Other Sony subsidiaries have yet to announce recalls of their own, but Japanese newspaper the Nihon Keizai Shimbun today put the total at 300,000 Vaio batteries worldwide.

    The claim comes a day after Toshiba said it may take Sony to court to seek compensation for the lost business and damage to its brand it alleges it has sustained since it issued an 830,000-unit recall last month.

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