are these cells balaced for my my diy power bank ?

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Tue, 09/08/2015 - 16:30
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USSR
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are these cells balaced for my my diy power bank ?

hi

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
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Tue, 09/08/2015 - 16:55
eebowler
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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.

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