... :37mm*67mm 5.Application for electronic device 3.7V 4400mAh 18650 li ion battery pack specification Model No.TLH-520AhCell BrandChina ... High working voltage for single battery cells3, Pollution-free4, Long cycle life5, No memory effect6, Capacity, resistance, Voltage, platform ... available upon request We could provide the li-ion battery 18650 with the capacity of 1800mah to 2600mah. such s 1800mah ...