Hyperion T-mobile/AT&T HTC Sensation 4G 2 x Battery + Wall Travel Dock USB Charger (Compatible with HTC Sensation, Z710E, G14) 2x HTC Sensation Battery + 1 Travel Dock/Charger also compatible with HTC Z710E, and G14. Easily swap your battery when your charge is low. The battery has an integrated microchip to prevent overcharging and lengthens battery life. 2 x 1600mAh Battery and 1 x Universal Wall Dock Charger. Do not need to change back cover. The Smart LED shows charging status. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock.