1,BMS for lithium battery pack. 2,Can communication with ourself charger 3,BMS+Sampling wire+Dispaly+current sensor BMS ... Components :This BMS can manage 16cells,20cells,24cells LiFePo4 battery pack ... each cellCell balancing 2, Main Control unit : 3, LCD Display :4, Wired cord : P.S: We also make suitable intelligent charger ...