3.7V 230mAh Polymer Lithium Battery 1) High capacity density 2) Long cycle life 3) ... to the cell electrical,mechanical safety performance.Battery CellSanyo,Panasonic,Samsung,Sony,LG 18650 li-ion cellPCB Safety FunctionCell balancing,Over ... and etc. 10.Shenzhen LEFENGTONG ELECTRONIC CO.,LTDProfessional secondary energy lithium ion battery solutions supplier. The pcb could be customised 2 ...