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Ok here goes :D Actually i only need 1-2 amphours @ 48 volts, discharged at 7-14A over eight minutes - but finding a 48V 3Ah commercial battery is impossible - DIY is not preferred since its for industrial usage (worries about warranty) - its 2 (or 4) x 48v DC motor using ~ 3,5A each over eight...

@BiduleOhm - thank you alot ! - this is really helpful ! I see why using capacity and SOC to balance is hard to do, as you mention accuracy is the problem. My plan was to let the battery stay at 30-50% SOC pretty much always - i've oversized to a factor 10, which means discharge between...

Hi ! I am looking into using LiFePO4-batteries as standby batteries - and trying to figure how extend calendar life by cell balancing. So - LiFePO4 needs cell balancing - this normally happens when the battery has been charged up fully, where the voltage of each cell begins to variate alot...

A charger with such properties is already in my plans - and i've found a few of those with ~ 50% overhead and able to finish at a programmed voltage, cut off after a certain time, restart again at a certain voltage level - and forced start after xx number of days - all programmed via software...

So with say, 5-10 cycles each year, and a estimated calendar of 10 years @ 50% SOC (total ~ 100 partial discharges) - you dont think balancing will be relevant? The battery i've been looking at has socalled "matched cells" - but i would expect that, since its a 48v 25Ah LiFePo4 with 26650-cells...