[jhautz]

2s a123 would be 7.2V off the charger. A littel on the high side, but I have considered doing the same thing in the past for my nitros. They only reason Ididnt was the dang battery boxes on the nitros were just a touch to small to fit the length of the a123s.

I wound up using 2 of the 1200mah LiFePo4 cells in seriies though with no isses. Same voltages as the a123, just smaller size and capacity.