... 3.7v 750mah li-ion rechargeable batteryNormal Capacity: 750mahNormal Voltage: 3.7vBattery Quality: 1. Cells: A grade cells to make sure ... energy density 2, High working voltage for single battery cells 3, Pollution-free 4, Long cycle life 5, No ... customized configurations is available (we could design and develop Li-ion battery according to your product work performance & structure apprearance ...