Hyperion AT&T HTC Vivid 4G 2 x Battery + Charger (Also Compatible with HTC Raider 4G) 2 x 1800mAh Battery and 1 x Universal Wall Dock Charger. Do not need to change back cover. Hyperion batteries use Grade A cells and other high quality raw materials to produce a battery with superior performance. Easily swap your battery when your charge is low. The batteries have an integrated microchip to prevent overcharging and lengthens battery life. Extend your talk time on your HTC Vivid 4G (Also Compatible with HTC Raider 4G).