The most indispensable accessory for your HTC cellular device is the battery. Unless you are need of a paper weight even the most advanced phone is useless without power. Use this original PCD BTR6400B Battery as a replacement or spare to extend the talk time of your HTC phone. Keep your Thunderbolt or MyTouch 4G cellular device working at optimum performance levels at all times. Just pop the PCD BTR6400B Battery in your pocket or bag and you’re good to go that extra mile, chatting with your friends, at work, or on the road.