Battery4.us: Great battery online shop in US

Battery4.us: Great battery online shop in US

Last Friday, my dell 1520 battery died after used for 1 year (just 15days after its dell quality warranty). So I do not think I should pay 150$ for a New dell original 1 year warranty battery. I phoned to dell customer service that if they can recall the battery and repair the battery for me, but they say it will cost me 60-70 $. Oh I think it is worse than buying a new battery. But the 150$ is too expensive.

So I tried to search Dell 1520 battery replacement US in Google, and then I found a online shop specially for US www.battery4.us, I easily search the dell 1520 battery there, and after view its policy and shipping site, I found that it is a international battery factory and battery online shop, It also has its partner in German UK and CA. It owned a battery factory in Hongkong and produce the battery pack for many Electronic Company.

Then I sent a email to its customer service about the shipping time price and discount. They replied me after 5 minutes and reduce my battery shipping fee as the light battery weight and they use usps to ship the packpage. So I order the New Dell 1520 battery (1 year warranty and 30 days money back) just $68.71 and I received it 7days later, the new battery pack can last 3 hours. In all it is a satisfactory shopping in www.batetry4.us .

The online shop is a battery supermarket for la ptop battery, camera battery and battery grip. And they store most popular laptop battery as Acer, Apple, Dell, Compaq, HP, IBM, Sony Toshiba and so on. Their battery factory supply the all the newest laptop battery, camera battery and battery Grip, then let me list the popular battery model and codes for you, then you can find the suitable battery there.

Apple Laptop Battery

IBOOK G4 battery
IBOOK G4 12-inch battery
IBOOK G4 14-inch battery
MacBook Pro battery
MacBook Pro 13 battery
MacBook Pro 15 battery
MacBook Pro 17 battery
PowerBook G4 battery
PowerBook G4 12 battery
PowerBook G4 17 battery
PowerBook G4 15 battery
PowerBook G4 15 battery

Dell Laptop battery :

Inspiron 1300 battery
Inspiron 1420 battery
Inspiron 1501 battery
Inspiron 1520 battery
inspiron 1525 battery
Inspiron 6000 battery
Inspiron 630m battery
Inspiron 6400 battery
Inspiron 9200 battery
Inspiron 9300 battery
Inspiron 9400 battery
Inspiron E1505 battery
Inspiron E1705 battery
Inspiron Mini 9 (8.9 series)
Latitude D410 battery
Latitude D420 battery
Latitude D430 battery
Latitude D500 battery
Latitude D510 battery
Latitude D520 battery
Latitude D600 battery
Latitude D610 battery
Latitude D620 battery
Latitude D630 battery
Latitude D800 battery
Latitude D810 battery
Latitude D820 battery
Latitude D830 battery
XPS M1210 battery
XPS M1330 battery
XPS M1530 battery
XPS M1730 battery

HP & Compaq battery

HP 510 battery
HP 530 battery
Mini 1000 battery
2133 Mini-Note PC battery
OmniBook XE3 battery
Pavilion DV4 battery
Pavilion DV5t battery
Pavilion DV6 battery
Pavilion DV1000 battery
Pavilion DV2000 battery
Pavilion DV4000 battery
Pavilion DV6000 battery
Pavilion DV8000 battery
Pavilion DV9000 battery
Pavilion ZV5000 battery
Pavilion ZV6000 battery
EVO N400C battery
EVO N800 battery
Presario 1200 battery
Presario CQ45 battery
Presario M2000 battery
Presario R3000 battery
Presario V2000 battery
Presario V3000 battery

IBM & Lenovo


Thinkpad A20 battery
Thinkpad R32 battery
Thinkpad R40 battery
Thinkpad R50 battery
ThinkPad R60 battery
ThinkPad R60e battery
Thinkpad T20 battery
Thinkpad T30 battery
Thinkpad T40 battery
Thinkpad T42 battery
ThinkPad T60 battery
ThinkPad T60p battery
ThinkPad X60 battery
ThinkPad X60 battery
ThinkPad X60s battery
ThinkPad Z60t battery
Thinkpad R61 battery
Thinkpad R61e battery
Thinkpad T61 battery
ThinkPad T61p battery
ThinkPad X61 battery
ThinkPad X61 Tablet
ThinkPad X61s battery

Sony Laptop battery

Sony PCGA-BP1N
Sony PCGA-BP2E
Sony PCGA-BP2EA
Sony PCGA-BP2S
Sony PCGA-BP2V
Sony PCGA-BP4V
Sony PCGA-BP51
Sony PCGA-BP71
Sony PCGA-BP71A
Sony VGP-BPL2
Sony VGP-BPS2
Sony VGP-BPS3
Sony VGP-BPS4
Sony VGP-BPS5
Sony VGP-BPS5A
Sony VGP-BPS9
Vaio PCG-Z505 battery
Vaio VGN-FS battery
Vaio VGN-FT battery
Vaio VGN-SZ battery

Toshiba Laptop battery

Toshiba PA2487UR
Toshiba PA3107U-1BRS
Toshiba PA3191U-1BRS
Toshiba PA3383U-1BRS
Toshiba PA3284U-1BRS
Toshiba PA3285U-1BAS
Toshiba PA3331U-1BRS
Toshiba PA3356U-1BRS
Toshiba PA3383U-1BRS
Toshiba PA3384U-1BAS
Toshiba PA3395U-1BRS
Toshiba PA3399U-1BRS
Toshiba PA3400U-1BRS
Toshiba PA3420U-1BRS
Toshiba PA3450U-1BRS
Toshiba PA3451U-1BRS
Toshiba PA3465U-1BRS

Also they supply the newest DSLR Camera battery as (Canon Casio fujifilm Kodak olympus Panasonic and sony) and batetry Grip for US. They Also has Price avow, I copy it from its site : Price :
Battery4.us will honor our advertised prices is the cheapest. If there is a price differential, please check the following:

Low-quality items are usually cheaper than retail so please ve
rify the product type

Open Box items are always cheaper than new products
If, after confirming that the Battery.us price does not match the cheapest price, please contact us for assistance.

Hopes that help you.

The United States to abandon the development of new battery technology allows cell phone powered by sound waves

The United States to abandon the development of new battery technology allows cell phone powered by sound waves

According to foreign media reports, Imagine has a self-powered mobile phone that how good it will never have to charge and can keep the phones running without VGP-BPS9A/B VGP-BPS9/B. This is not fantasy, but the U.S. University of Texas professor Kim Tai Xika a recent invention. This invention allows mobile phone users to speak into the energy generated by sound waves, providing use of mobile phones, enabling mobile phones used instead of power.

Self-powered mobile phones could be sound waves into electrical energy

Cajun working on nanotechnology, through the use of the so-called piezoelectric materials, he developed a self-powered device, which does not require batteries that can replace the power supply category of Lifebook T4220 battery Fujitsu fpcbp155. In particular, card payments and a partner University of Houston have found some kind of voltage is less than a nanometer-thick body of material under the micro-size of the converted energy can be 100%. Moreover, when this material larger than this specific size or more hours, their energy conversion rate declined significantly. His findings, published in the fall of the American Institute of Physics scientific journal "Physical Review". This discovery will develop low-power electronics products have far-reaching significance, this can be developed from I-powered mobile phones without pavilion ZV6000 battery Aspire 3000 battery, laptops, personal communication devices, and numerous other computer-related electronics products.

Many high-tech products of the components are nano-level. Although the invention of Cajun small, but significant influence. He found that will enable small and easy to extend the service life of wireless products without HP PB995A. Because, MP3 and cell phone, the laptop battery life is a major problem, if you want to expand their capabilities, then they need to have a more powerful battery to support. And convenient self-powered device will resolve this problem, which is several federal agencies interested in the reasons for such devices. In fact, the U.S. Defense Advanced Research Projects Agency (DARPA) has been studying the field the soldiers how to use their conversation to obtain the energy to power their portable equipment. In addition, the sensors used to detect explosives, would greatly benefit from self-powered technology, can reduce the trouble of testing and replacement of the battery.

Cajun explained that the key to this technology is the piezoelectric body. Is a class of piezoelectric crystals are very interesting, when you squeeze or stretch it, it will produce different ends of the charge of Pavilon DV9000 battery. This effect is called piezoelectric effect. Piezoelectric effect can produce a crystal is called piezoelectric crystals. Crystal quartz is a well-known piezoelectric crystals. Piezoelectric body is not a new concept, in fact, as early as in the first century BC was the French scientist discovered. Was first used in piezoelectric sonar equipment during World War.

Now, equipped with a piezoelectric crystal element of the apparatus so that technical staff research the steam engine, internal combustion engines and all kinds of chemical equipment in the pressure changes become a reality with this XPS m140 BATTERY. The use of piezoelectric crystals can be measured or even the pressure of fluids in pipes, guns, firing shells in the barrel when the pressure of the bomb exploded when the instantaneous pressure. In addition, the piezoelectric crystal is also widely used in the microphone and quartz table. Even the car ignition also has piezoelectric crystal. Click on the button will cause the ignition of piezoelectric crystals generate impact of Inspiron 640m battery, thereby generating sufficient voltage to produce sparks and ignite fuel.

On major applications, a number of European dance floors of nightclubs and dance halls was built by the piezoelectric crystal can absorb and convert XPS M1730 battery energy to generate electricity footsteps as a way to light bulbs inside the nightclub. According to reports, the Hong Kong Coliseum is an athlete using this technology to the Pavilon DV8000 battery energy conversion into electrical energy as a means of lighting and play music. Cajun said that the application of piezoelectric crystal will be a higher level, especially when the nano-scale emergence of the piezoelectric crystal, after the application of this technology will become more widespread.

The news via batteryblog

Do not charge mobile phone battery too long time

Do not charge mobile phone battery too long time

Because of improper use of this small a laptop battery as a "time bomb" could explode at any time.

There are many types of cells, according to their nature of work can be divided into a battery (primary batteries), rechargeable batteries (rechargeable batteries). Disposable primary battery can not re-use, multi-mercury, including the carbon-zinc batteries, alkaline batteries, zinc-manganese batteries. Rechargeable batteries can be reused, the common are nickel-cadmium batteries, lithium rechargeable batteries. "Because cells contain large quantities of chemical substances in use, pay special attention to safety." In particular, the following practices are best avoided.

A long time to charge the phone. Cell phone laptop batteries are mostly Li-ion battery. Most people want the phone to standby longer, so he deliberately charging an extension of time, such as work began to charge home, go to bed have shown that full power, still need further charge on the night and the next morning before unplugging . But in fact, if the battery is full, to continue charging the higher the temperature continues, the battery is not in the resistance of the long-term drop off, the battery itself, heat aging can also occur at the same time, some may even be counterfeit batteries or battery (A1175 A1079) leakage explosion phenomenon.

The correct way is the third new Latitude D610 battery before the charge required to more than 12 hours, so that the battery to fully activate the batteries. After charging according to battery type and capacity of different charging time is about 1.5-6 hours, indicating the battery is already full of 1 hour charge can be added, so that both sufficient and would not damage the battery. To not more than 24 hours.

Then when the notebook computer power does not win the battery. The number of Apple Powerbook G4 battery charge is limited, on one charge, the battery on to the "retired" step forward. Recommended to make use of an external power supply, use an external power supply when the battery removed. If you plug the power several times in the day, and the notebook computer equipped with a battery, this will damage the battery more. Because each access to external power supply is equivalent to the battery charge time, battery life shortened by a naturally.

Repeated use of disposable alkaline batteries. Disposable batteries run out or throw, do not re-use or as a rechargeable Latitude D620 battery to use it. This is very likely to use or charge at a number of gas pressure generated in the process, so that the battery swelling. When the gas pressure is too large when the row did not come out, the battery may be a result of chemical reaction caused by fire or explosion.

To be able to charge the new alkaline batteries with rechargeable batteries and old. Old and new Pavilion DV2000 battery because of their life not the same, the capacity to accept are not the same and therefore I put together charging, the small capacity of the old battery is fully charged, the need to wait until after the high-capacity battery is full will stop. In this waiting process, the battery itself was filled with electricity, there is still current flows through, it's like in the expansion of charge. Once the excessive charging, the battery itself will heat expansion, destruction of the battery protection circuit may cause fire or explosion.

When charging the battery, be sure to use a dedicated charger original, otherwise they will be models inconsistent probably can not be recharged into electricity, or in the process of charging, resulting in leakage of the situation, over time will damage the VGP-BPS2C VGP-BPS2 VGP-BPS5 VGP-BPS2A battery's protection circuit, resulting in the battery explosion or other dangerous incidents.

A limited number of rechargeable batteries, if found to rapidly heat the battery, indicating the effectiveness gradually decreased and should be replaced immediately

The article Via Thirdshoping

5 Pounds free activity

5 Pounds free activity

Save 5.00 pounds buying laptop battery

Last Monday my 13 months Dell D620 battery died that just out of the fucking dell 1 year warranty. And I must go to London for a 1 weeks business trip. So I must buy a battery replacement, as I do not want to buy anything from dell, so I search a "Dell D620 battery discount" in google, after viewed hundreds reasults, I found a laptop battery Online shop now supporting 5 Pounds Free discount battery replacement.

I just order the battery from the online shop http://www.laptops-battery.co.uk/ and write a review for the battery in my blog, then they really return the 5 pounds for my blog. I think this is very useful as you can get 5 pounds free and help your reader to know a laptop battery online shop service (good or bad). Below is the activity info or you can get the info here:

Hello, everybody, pay attention to here please!

Here is the marketing department of www.laptops-battery.co.uk/ online store, recently, our company organized a coupon activity to help all our customers save money when place order on laptop batteries and adapters.

Below is the detail activity introduction for your review, hope you all join it eagerly.

1. If you have a Blog, and you update it from time to time, no matter what’s your blog subject, only except for containing adult content.

2. As long as you place order on our website and write a pertinent review of your shopping experience in our store on your blog, including service attitude, goods quality or price advantage, leave a link of the product you purchased with title (the detail product description of your order item), let me take a example on how to write the link and title, Link; http://www.laptops-battery.co.uk/sony-vgp-bps2.htm, Title: ”Sony VGP-BPS2 Battery” or “VGP-BPS2”.

3. The GBP 3.00 refund is based on this blog review article won’t be deleted randomly without anticipated notification.

4. Furthermore, Blog with PR 4 or above will get a chance of GBP 5.00 refunding.

5. When you have done above process, please email us at info@discount-laptopbattery.com, we will give response in one business day.

Remarks: This activity is available till Dec 25th, 2009.

The Free Credit 5£ most for their Newest laptop battery below :

Acer : BTP-44A3 BTP-42C1 BTP-52EW BTP-59A1 BTP-60A1 BTP-63D1 BTP-73E1 Aspire 1400 battery Aspire 3050 battery Aspire 5000 battery Aspire 5560 battery TavelMate 240 battery TavelMate 380 battery TavelMate 2000 battery TavelMate 3300 battery

Apple : Ibook G4 battery Ibook G4 12 battery Ibook G4 14 battery Apple A1148

Dell : 1G222 1X793 Inspiron 1420 battery Inspiron 2600 battery Inspiron 1521 battery Inspiron 1721 battery Inspiron E1405 battery Latitude D420 battery Latitude D430 battery Latitude D510 battery Latitude D810 battery Latitude D830 battery GK479 EK890 GW240 RN873 PC764 TC030

HP : PB994A PB992A HSTNN-LB31, Pavilion DV2000 battery, Pavilion DV6000 battery, PB995A, PB991A, EVO N400c battery, EVO N410c battery, EVO N410 battery, Evo N600C, Evo N610C battery, Evo N620C battery, Pavilion DV4 battery, Pavilion DV4T battery, Pavilion DV5 battery, pavilion DV5T battery, Presario CQ40 battery CQ45 battery CQ50 battery CQ60 battery CQ70 battery

IBM : Thinkpad R50E battery Thinkpad R50P battery Thinkpad R51 battery Thinkpad R52 battery Thinkpad R60E battery Thinkpad R60I battery Thinkpad R61E battery Thinkpad T43 battery Thinkpad T43P battery 40y6795 40y6797 40y6799 40y6999 40y7001 40y7003 92p1005 92p1011 92p1082 92p1101 92p1102 08k8193 08k8194 08k8195 08k8196 08k8197 08k8198 08k8199

Toshiba : Satellite a100 Satellite a200 Satellite a300 Satellite l200 Satellite l300 pa3176u-1brs pa3191u-1brs pa3191u-1brs pa3191u-3brs pa3284u-1brs pa3285u-2brs pa3285u-3brs pa3356u-1brs pa3356u-2brs pa3356u-3brs pa3395u-1brs pa3421u-1brs pa3420u-1brs pa3450u-1brs pa3506u-1brs pa3475u-1brs pa3476u-1brs pa3534u-1brs pa3535u-1brs pa3682u-1brs pa3536u-1brs pa3537u-1brs pa3479u-1brs pa3480u-1brs

The news via Batteryblog.

Built-in Projector, Nikon S1000pj Camera Issued

Built-in Projector, Nikon S1000pj Camera Issued

August 4th 2009, Nikon announced to issue COOLPIX S1000pj camera for Sony NP-BG1, Canon BP-511, Kodak KLIC-5001., this camera not only with mini body but also with powerful photo function, and it possess the strong projection function.

To use the built-in projector of this digital camera battery, you only need to touch one button, then you can project the photo or video on a flat wall, the image dimension can reach 40 inch in maximum. It can project photos one by one, or match the music to play it like lantern slide. It also accompany with a portable projector bracket, and a remote control which can operate the projector and release shutter function.

COOLPIX S1000pj camera adopts a 5 optical Zoom-Nikkor lens, with 28mm wide-angle that cover 3cm microspur shooting ability, the camera use a 12.10 million pixel transducer, Nikon EN-EL3E.

Compared to a common camera, 12.10 million pixel, 28mm wide-angle and 3cm microspur shooting ability and EN-EL9 are not very high, but it integrated a projector, and support to play at 40 inch, anyhow it is quite practically.

The post Via Digital Blog

Why laptop battery explode?

Why laptop battery explode?

Laptop battery is composing of enclosure, interface, cell and control circuit board, battery cell is responsible for supplying and storing the power of the laptop. Control circuit board with complex working principle and design, it controls the battery start and stop charging at proper time, control the discharge current reasonable, and it also take charge of showing the battery capacity and recycle charge times recording. When the battery in a high temperature or large current and other un-normal condition, it the control circuit board can protect the battery.

The OEM post in http://www.laptops-battery.co.uk/

The four suspicion of laptop battery explosion.

A, Battery cells interior short-circuit

The Latitude D620 battery cells has no protection function when meet large current, if single or multiple cells happen short-circuit situation, it will let cells discharge at high current. These current generate large quantity of heats will let the battery enhance the temperature, and then transfer to the other parts of laptop.

If the Latitude D600 battery enclosure is plastic material, it will deform or even get fired under high temperature, it is dangerous. The regular cells has experience strict test when out from factory, and the battery enclosure always adopt fireproof material and difficult to get fire. So the most possibility is involved with poor quality material for VGP-BPS2C VGP-BPS2 VGP-BPS5.

B, Battery cells connector wire short-circuit

The Dell Inspiron 6000 Battery, interior structure is too compact which leave opportunity for the cells. The wires in the middle are quite compact and close to the cells, if the skin of the cells and wires wore out, or the connect wires break off, then the cells will discharge at very high current and bring high temperature and cause fire final.

C, The control circuit invalidation

Sometimes, the control circuit will be invalidate for its protection part even it performed normal when use Sony NP-BG1, Canon BP-511,, when under full charge and un-normal, large current situation, the temperature will enhance and cause fire.

D Heat and abrupt incident

The laptop over heat or exterior liquid corrode, lightning strike or voltage un-normal will cause short-circuit.

All the battery spec info are from Laptop battery

Lenovo recall battery again

Lenovo recall battery again

Laptop battery have problems again? Lenovo today announced the recall all battery,

Lenovo Group, the official website linked to the issue of a replacement lenovo battery free of charge information. Although the relevant responsible person stressed that the issue of batteries does not pose a security risk, and intention to play down the incident, but still caused concern to the industry.

ThinkPad users as a result of a small number of reports, there can not charge laptop battery or low battery capacity, such as short battery life or a sudden drop in power the question of scale. Legend explains that "the battery can not repair the damage" or "battery can not charge" the emergence of information means that the battery can not discharge or charge. This is a permanent battery failure, but does not constitute a security risk. And low battery power, it means that time is short battery life, a sudden drop in the power scale.

If battery failure due to this problem, Lenovo will be a free replacement battery. "The official line of Lenovo Group, Lenovo areas indicate the scope of the replacement of batteries, announced the recall ThinkPad R60 battery, R61, T60 battery, T61 battery, X60 battery, X61 laptop battery part number. Lenovo said that all official information to explain the replacement of the main , is not to say that the above-mentioned 10 models of all models have the issue of batteries. users through the installation of diagnostic tools to check the battery, it still can not predict the number of batteries need to be replaced. windows users can use this tool to detect, to to determine whether battery failure due to this problem and to comply with the conditions of a free replacement.

In fact, this is not the first time the issue of Lenovo laptop battery action. The earlier outbreak of Sony "battery door" incident, Lenovo and Hewlett-Packard, Dell and other PC issues are also trapped in the work to improve the battery recall.

All the battery spec info are from Laptop battery

Maximize, battery life

Maximize your battery life

When I first got my laptop (8 mos. ago) my laptop battery life was about 2 hours 45. Now after daily use (mostly with plug but using battery as well) it is down to 1.5 hrs which is basically useless. I have tried draining totally recharging etc and still only 1.5 hours. SO I am buying a new one. My question is how do I make my battery keep its charge so I can have it when I need it?

I originally wanted to title this article "Why does my Ibook G4 14 battery life suck?", because I know that's exactly what it feels like when the battery life gets shorter and shorter. My oldest laptop has about a 20 minute lifespan, so in many ways the battery is really nothing more than a glorified UPS. Not that that's bad, but it does limit the laptop's portability.

I turned to a friend, Jerry Foutz, for some help on this one. Do a Google search for Power Supply Design, and Jerry's site, SMPS Technology, is the top result. Jerry knows power supplies.

It turns out that the single, most important aspect to maximizing battery life is something that I wouldn't have thought of: matching the battery to its charger. In Jerry's words: "Make sure your Ibook G4 12 battery and charger match and you have a quality charger. About the only way you can maximize the probability of this happening is to buy both from the computer manufacturer for the exact computer model."

"...even small differences in output voltage of the charger can have dramatic impact on the lifespan of your Dell laptop battery..."Apparently even small differences in output voltage of the charger can have dramatic impact on the lifespan of your battery, by either under, or over-charging. "If you get a low-cost charger and it is off by as little as 10 mV (millivolts, 1/1000 of a volt), you will also get less than optimum performance." An example Jerry shared is that a 4.1V cell charged at 4.050 V might be good for 4,000 charge cycles. Increasing the charge voltage to 4.250, a difference of less than 1/4 of a volt, can reduce this down to less than 100 cycles.

I had no idea that batteries were that sensitive.

I'm also glad that I've purchased my Toshiba PA3451U-1BRS batteries, extra batteries, and chargers from the manufacturer at the time I got my laptop. That, further, minimizes any manufacturing differences that may occur over time.

The number two factor in battery life? Temperature.

The fact is that laptops just aren't designed for ... well, for laps. If you look at the bottom of your laptop you'll see it probably has feet (or more likely, bumps or rubber pads) that lift it off of any flat surface you might put it on. That creates very important space for ventilation. If you block that space, with say your lap, it's likely that you'll be causing the laptop Inspiron E1705 battery to run hotter than it should. If you do this regularly, you'll likely shorten the lifespan of the laptop's batteries.

Again, in Jerry's words: "If you have your laptop on your lap and it is burning you, you are shorting the battery life and charge-cycle capability because you have interfered with its cooling system."

If you do like to use your laptop on your lap, there are various "laptop desks" out there that will provide you a flat, or even grooved surface (for even more space and air flow) on which to comfortably place your laptop Inspiron E1505 battery. My wife and I actually each have a laptop desk from LapWorks.

Temperature cycling - allowing the laptop Lenovo 40Y6799 to become very cold and then warm, repeatedly - say by leaving it in your car overnight in cold weather regularly can also adversely impact the battery's life.

A concern that I've had for a long time is whether or not leaving a laptop plugged in for extended periods of time would harm the Pavilion ZD7000 battery. Today's designs pretty much expect that type of usage, so it's not the issue I was afraid it might be. Good thing, too ... my laptop is plugged in and running pretty much 24x7.

Finally: "All this assumes a well designed power supply (including charger and Latitude C600 battery). Unfortunately, not all designs are perfect and the layman has almost no way to judge the quality of the design. You pretty much have to trust the manufacturer and his reputation."

All the battery spec info are from Laptop battery

The answer for laptop battery frequent asked questions

Last week I buy a Dell notebook from Dell.com, then I want to know some laptop battery tips and problems by google. I found many frequent asked questions about laptop battery, but there are various answers for them. So I send a email to laptop battery expect "Jack Smith" in http://www.laptops-battery.co.uk/ about these doubts. He reply me in the August 11, below is the reply content.

What is the six months warranty laptop battery?

Generally the laptop battery quality warranty is one year, but we can find many 6 months warranty "Original laptop battery" in ebay and other online shops? What is these six months warranty laptop battery?

Most the six months warranty batteries are the old battery with the new cells, old original battery shell and protection board. You can find the detail introduce here "How to replace battery cells inside laptop battery". As the battery protection board is old one, so the laptop battery can only work properly about six months.

For laptop battery, the higher capacity the better?

For different models (particularly different size) battery, the higher capacity battery can work longer. Exclude the size and weight factors, of course that the higher capacity the better.

However, the same battery type, the same nominal capacity (for example,Inspiron 6400 battery 6600mAh), the actual measurement capacity is different: for example One Inspiron E1505 battery capacity is 6600mAh, and the other is 6700mAh, then the 6700mAh battery is better then 6600mAh?

The actual situation may be that : In the high capacity battery's electrode materials, increase the initial capacity of more things, and reduce the materials to stability of the electrode. It may result that after used for some charging-discharging cycles, the capacity of high-capacity battery reduce rapidly, while the capacity of low battery is still strong. Many laptop battery manufacturers often use such method to produce the high-capacity battery. After used for six months the GD761, KD476, TD347 battery standby time is too less.

Enhance the battery capacity can reduce the battery cycle life. If the laptop battery manufacturers are not make great efforts in battery material, it is impossible to truly "improve" the capacity of the battery.

It is worth to store the fully-charged battery

Lithium-ion batteries have a very bad characteristic, that is the lithium-ion laptop battery aging time. When a lithium-ion battery in storage for some time, even not in recycled, its capacity also lost in the storage. Because the lithium-ion battery anode materials begun the failure process when manufactured. Different temperatures and Pavilion DV8000 batteryy charged state cause the different consequences statute. You can the get the general conclusion by following data ( the percentage of capacity in the form):

Storage temperature - 40% state of charge ------- 100% state of charge

0 degrees ---------- 98% (a year later ) ------- 94% (a year later)

That is the all, hopes that can help you.

All the battery spec info are from Laptop battery

How to measure the power consumption of notebook battery

All the battery spec info are from Laptop battery

How to measure the power consumption of notebook battery

The Original article posted in http://www.laptops-battery.co.uk/blog/

Why laptop battery capacity reduce as time? Why battery calibration can improv battery capacity? How to charge the battery correctly? All above probelm are related to battery power consumption. Open circuit voltage measurement ... ... Coulomb measurement, impedance measurement, what are these terms mean? Here we will simply introduce all of them!

Whether it is the out nickel-metal hydride batteries, lithium-ion Dell laptop battery, or not commonly used lithium polymer batteries, and even coming silver zinc batteries, are equivalent to the a storage warehouse of electronic power. The differences between them is that the way out of the Treasury, the volume of stocks it. In laptop batteries, there is a power manage center - power consumption chip, it is the management of power measuring, charging and discharging managing.

In the measurement of battery technology, there are four kinds common method (open-circuit voltage measurement, Coulomb calculation, impedance measurement, integrated look-up table method), but not all IBM laptop battery used only one method, usually using a combination of methods to one of the main method of supporting the rest of the way computing power. The first one is the open circuit voltage measurement, this method is that measuring the battery voltage under static values to calculate the remaining battery capacity, but as a result of stationary lithium-ion battery voltage and remaining capacity relation is non-linear, so this method measured valueis not accurate, the vast majority of mobile phone batteries are calculated using this method;

The second one is Coulomb calculation, the method is by measuring the laptop battery charge and discharge current, the current value and time value After the calculation of product integration has been carried out by filling the battery into the power and the release of electricity, Coulomb's method is a accurate method of calculating power;

The third one is the impedance measurement, measuring its resistance to get the remaining battery capacity value; the fourth is a comprehensive look-up table method, by setting up a related form, the voltage, current, temperature and other parameters, you can query the remaining battery capacity.

Therefore, in addition to the internal structure of the battery batteries, there are control chips, the chip which contains 1-2 kinds of batteries power measurement method of calculation, and a charge-discharge protection circuit. HP laptop battery manage program had been setted in the system, and through access to the chip-driven interface, and then set on the battery management.

So, why the Toshiba laptop battery will become weak, but the battery calibration can improve the battery capacity? Notebook battery 6-cell and 4-cell, means that there are a number of battery cells inside the battery. The batteries cells conenect together, the battery capacity reduce reason is that: all the batteries quality and discharge rate can not be in the same level. After discharge, one battery cell capacity in substantial reduction, in order to maintain voltage stability, the battery management chip will be according protection of core power as the "bucket principle", so after the electricity charge will decrease.

Battery calibration is to balance the multiple batteries cells, the Apple laptop battery cells own internal resistance can not be completely consistent, the large internal resistance battery will shoulder the larger current, and its own consumption more than the other batteries. So regular battery calibration is necessary - it can balance the burden of multiple batteries work and prolong the whole battery life.