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I replaced my battery pack with anker brand. It went faulty and was not charging. So they sent another pack which was turned out to be faulty. Now i got 2 battery packs sitting of now use. If i want to replace the cells what consideration should i take.

** How to calculate current. Original and replacement battery are 10.8 V. Which cells should i use (3.7 or less). Dont want to burn the laptop with more voltage.

I will greatly appreciate if any one can help.

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Use 10.8/BatteryVoltage number of batteries in series, example:
Lithium batteries are 3.7 or 4.2,
so 10.8/3.7 ~= 3
so three batteries in series will provide roughly 10.8(11.1 which could be an issue)
then to increase current(If I remember correctly) you would use sets of three wired in parallel.(so 3 batteries wired in series, then wired in parallel with another set of 3 wired in series)
I do not usually work with electronics, so I reccomend checking all this information is correct, since 11.1v might not work with your laptop.

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  • thanks for the answer. If i want to built a high capacity battery.(reasonable price) Anker claimed 8800mah but i saw 5000mah on ebay. Are 8800mah available online ?
    – max
    Jan 30, 2014 at 15:16
  • @max Pretty much any battery is availible online, since you're building a custom battery I reccomend trying to go for more than 8800.
    – user270595
    Jan 30, 2014 at 15:24
  • I searched ebay and other local store. Ebay max i can find is 5300mah. Store dont have them. May be you can help in pointing at right source.
    – max
    Jan 30, 2014 at 16:37
  • @max Just search laptop battery, ebay.com/itm/…
    – user270595
    Jan 30, 2014 at 23:39

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