Hyperion Motorola Droid Bionic 4G 2 x Battery + Charger (Compatible with Motorola Droid Bionic XT875). 2 x 1800mAh Battery and 1 x Universal Wall Dock Charger. Do not need to change back cover. Easily swap your battery when your charge is low. Hyperion batteries have an integrated microchip to prevent overcharging and lengthens battery life. The Smart LED shows charging status. Extend your talk time on your Motorola Droid Bionic 4G.