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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 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 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 battery 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.

About the Author

Jack is a battery expert in http://www.laptops-battery.co.uk/

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