Quote:
Originally Posted by KaztheMinotaur
I just looked up the Hobby City battery warranty myself.
I was charging my Zippy 5S, 5000mah, 30C batteries for the first time. I had 2 cells come up to 4.13 and the others were full, balance charges. I have it on the blinky now and then I will charge it at a lower amp rate.
Is that to much of a difference?
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Personally I think anything more than 10mV difference is too much out of balance. So that would be having most cells at 4.20V and one or more other cells at 4.19V. Even a cell at 4.19V bugs me, and I want all my cells balanced to within 5mV or less.
Of course HC says it's acceptable for cells to be up to 245mV out of balance, which is ridiculous IMO. It would be nice if we could get some official recommendations from lipo manufacturers on what is acceptable as far as cell balancing.
I got the 4.09V cell to go back into balance by putting my charger into the slowest most accurate balance mode. BrianG also suggest just charging the individual cell as a 1s pack using the main charger leads directly into the balance taps of the low cell using some high-value resistors (see his post for more details). Hopefully you'll be able to get your cells back in balance too!
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