Hyperion HTC Evo 3D 2 x 1800mAh Li-Ion Battery + Charger For HTC Evo 3D (4G), HTC Amaze 4G, HTC Shooter, HTC Sensation XL, G14, Sensation XE, and Mytouch 4G Slide Extend your talk time on your HTC Evo 3D. Easily swap your battery when your charge is low. The battery has an integrated microchip to prevent overcharging and lengthens battery life. 2 x 1800mAh 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.