BP4872

BP4872B lithium batteries power bank
Lithium battery power pack, used for Headlamp HL50II and HL54II, with bicycle light BL200,BL200X,BL200XQ, upgrade BL800C, upgrade BL800F.
Extend 5.5 DC Jack and OD3.5mm cable.
4×18650 Li-ion battery inserted with protection circuit board.