Hi, I'm Russ and I am a member of the May Headway/frotus Group Buy. Someday I will receive 12 HW 38120 cells and BMS to build a 36V/10AH pack. My dilemma, even after much reading and searching, is to find the correct/best charger for this pack. (12S, each cell is rated at 3.2V 10A). There...