HiTec 44165 X1 AC Plus Single Port 6 Amp AC/DC Charger (NiCd/NiMH/LiPo) The X1 "auto" function sets the charge and discharge current for you automatically he X1 features a built-in a cell voltage balancer so you dont need to fuss with external balancers while charging The X1 also monitors and balances each cell in the pack individually while discharging