BySven147
Hello folks,
I have a new 48V lithium-ion 13S4P battery pack with BMS, but I suspect that at least one cell is dead. Since the voltage is only 46.2 volts despite being fully charged, is there a way to identify the defective cell or at least narrow down the problem without separating the cells?
Thank you for your help
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Measure each cell with a voltmeter in the stack. You don’t have to disassemble it, but just release the lines. Of course, you shouldn’t make a short circuit when measuring.
Btw in the pack are when then 8 cells are higher than the voltage you write corresponds to an 11s battery.
So 2s less and at 4p 8 cells must be discharged to 0V.
Yes, thank you.
Looks like the cells have all 3.5X volts. clearly below the rated voltage of 3.7 V.
And clearly under the charging voltage. 3.5V is more bearing voltage at LiIon.
Maybe. Which cells are installed?
@Kelec then assumes that the battery pack is not as new as specified