CyberTech 2PCS (Qty: 2X) High Premium Quality Li-Ion High Capacity 2450mAh Gold Replacement Batteries and Multi Function USB Battery Charger for Sprint/Boost Mobile HTC EVO Design 4G Portable, lightweight and easy to carry USB Port Output allows you to charge phone directly or provide power to other electronic devices with USB cable(Not Included) This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life 2450 mAh Extra High Capacity, extra-long stand-by times Package Included : 1 x Wall USB Battery Charger + 2 x Replacement Batteries 2450mAh