... 4400mah 3.7v miner light li-ion battery 1,3.7V/4400mAH 2,Over 500 cycle life 3,High capacity 4,No pollution 4400mah 3. ... CE,UL,FCC, RoHS,ISO9001Features: 1, Longer storage life than NiMH Batteries2, Light weight and higher energy density than any rechargeable ... connectors are available4, We could design and produce the battery pack with plastic shell and assembly procession for customized configurations ...