pianotuna wrote:
3 tons,
Well said.
I'm quite concerned about capacity loss--if we can believe it starts at 86 F on LiFePo4. However, I only know of one case where that loss from over temperature happened.
I am just reading some testing on that, not finnished but the summery is between 10C and 40C charge/discharge with no concernes, from -20 to 60 well thoes will be the cut off points for discharging , and charging between 0 and 60C should use a temparature compensated charger, like any battery should. charging Leadacid above 40C will cause dammage also if the heat is allowed to stay up there. *these temps are battery temps not outdoor temps*
I know people who roll there own and plan on high speed charging compress the cells slightly and that seams to allow them to charge at higher than 1C rates with no dammage, but I think the best bet is to use a good BMS that includes temprature compensated charging.
Steve