... 3.7v miner light li-ion battery 1,3.7V/4400mAH 2,Over 500 cycle life 3,High ... capacity 4,No pollution 4400mah 3.7v miner light li-ion ... 85%RHCycle life500 TIMES CYCLES (Normal temperature ,1C cycle to 60%,100%DOD)Safety certificateCERTIFICATION: CE,UL ... : 1, Longer storage life than NiMH Batteries2, Light weight and higher energy density than any rechargeable battery3 ...