... 7 days after confirm order 7.4V 2200mAh li ion battery packRechargeable battery pack specification Model No.TLH-2S1P-222Cell ... High energy density2, High working voltage for single battery cells3, Pollution-free4, Long cycle life5, No memory effect6, Capacity, ... : Injection Technology to make battery more stable4.Certifications : CE,UL,FCC, RoHS,ISO90015. Long life cycly, No memory, ...