1700mAh Slim Extended-Life Battery for HTC myTouch 4G and HTC ThunderBolt (Red) + Standard Wall Charger Preimum Quality,and Durability! Produced under high quality standards Cell: Lithium Ion, Voltage: 3.7V, Capaticy: 1500mAh Does not require the use of a replacement door Standard Wall Charger (With Led Light) Plug is foldable