Quote:
Originally Posted by nimblemotors
I don't think this is much of an issue, there are 4 serial, 3 cells in parallel, all three must go to zero volts so the rest must take up the 14.5 volts. That is really just 5 volts per cell each, don't think that will cause them to blow up.
It isn't like NiMH or NiCad that will explode if overcharged, LiFePo will not keep taking in a charge when full.
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I'm not sure you understand my concern. You've got to limit the current once you hit 3.6V per cell, and if one cell is low impedance because it's failing, you will keep pushing your full current into the rest of the stack of fully charged cells. A cell over 4.2V will be at risk of thermal runaway, as that is energy not going into storage, so the remaining 3 good cells will overheat.
Are you limiting your charge current with the alternator?