4400mah 3.7v miner light li-ion battery 1,3.7V/4400mAH 2,Over 500 cycle life 3,High ... )Safety certificateCERTIFICATION: CE,UL,FCC, RoHS,ISO9001Features: 1, Longer storage life than NiMH Batteries2, Light weight and higher energy density than any ... requires compact size and lighter weight6, The battery module is wrap by PVCOthers: 1, OEM orders are available2, Superior quality and cost ...