HTC BTR6400B Original Li-Ion Battery for HTC My Touch 4G and ThunderBolt 6400 - Non-Retail Packaging - Black
Flight delays, power outages, extended trips. You can't always recharge your HTC device when you'd like to. But with an extra original battery on hand, you can always talk, type and work as long as you need to. Keep it in your bag or briefcase and you'll stay connected, powered up and ready to get the job done.