... 5.Application for electronic device 3.7V 4400mAh 18650 li ion battery pack specification Model No.TLH-520AhCell BrandChina brandVoltage3 ... 1, High energy density2, High working voltage for single battery cells3, Pollution-free4, Long cycle life5, No memory ... overcurrent, anti-overload3.Compose Type : Injection Technology to make battery more stable4.Certifications : CE,UL,FCC, RoHS,ISO90015. Long ...