... 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 battery ... are available4, We could design and produce the battery pack with plastic shell and assembly procession for customized ... configurations is available (we could design and develop Li-ion battery according to your product work performance & structure apprearance)