are these cells balaced for my my diy power bank ?

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Joined: 07/12/2012 - 15:13
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are these cells balaced for my my diy power bank ?


i have a 5 cell diy power bank.

i have extracted some cells from a laptop battery. i charged them using 500ma and then let them rest for few hours .. then discharged them at 500ma below are result.

discharge  took 4:11  hour:minutes    2069mah
discharge  took 4:14  hour:minutes  2098mah
discharge  took 4:15  hour:minutes   2102mah
discharge  took 4:06  hour:minutes   2048mah
discharge  took 4:17  hour:minutes   2139mah


are they balanced for this power bank ?  







Edited by: USSR on 09/08/2015 - 17:50
eebowler's picture
Last seen: 3 months 2 days ago
Joined: 08/13/2012 - 11:34
Posts: 1832
Location: Trinidad and Tobago GMT -4

that third cell is a bit wonky however, if the cells are all in parallel, you should be fine. Cells are more of a danger when they are in series and one or more can be seriously overdischaged.

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile