markz said:IR, tab weld resistance/cold tab weld/hot weld, variance in thickness of tab metal, variance in solder thicknesses, wire gauge used, cells at the beginning or end of "S"eries....
.....between the cells will have a more drastic effect then it would at the left part of the charge, more charged part.
So is this a 52v, 16s, 16p pack, ?rg12 said:Thats what I thought also but I forgot to mention that it's a 16P pack which logically should make all the little imbalances and capacity changes between cells all averaged.
madin88 said:Yes thats how it is, and one more reason could be the BMS.
Lets say the BMS does balance the pack at 4.10V with accuracy of 0.01V and then the pack get discharged to the end of the curve, that small difference from the beginning could increase to 0.10V then.