LS Accessories Li-ion Battery for Motorola Droid Bionic (HW4X) Battery (HW4X) compatible with the Motorola Droid Bionic as well as the Motorola Atrix 2 High quality Lithium Ion battery that charges to its full capacity for over 500 cycles Grade A battery with Dual IC protection to ensure safety; Battery Voltage: 3.7 Volts Battery Energy Content: 6.42 Watt Hours