36V/48V 17A 26A 30A 3-Mode Sine Wave Controller w/LCD Display Kits for Ebike

(Daly Smart BMS Lifepo4 15S 48V 40A-500A BMS Common Port with Balance Lot ASUK. display line. if wheel reverse, Separate the self-learning line. Docking the self-learning line again，if wheel forward ,Separate the self-learning line.).