HTC Thunderbolt 4G Verizon My Touch 4G Battery + External Wall Dock Travel USB Charger
Keep a spare battery with you to avoid being stranded without any battery power. Charger shows you when the battery is charging or fully charged. Red when charging and Blue when charged. One 3.7V Li-Ion Battery 1500 mAh and one External Dock Battery Charger are compatible with HTC Thunderbolt 4G and My Touch 4G. Charger is designed with a fold-able A/C plug that charges your cellphone battery anywhere. Smart LED indicator shows charging status. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock. With this amazing little external charger use the USB cord that came with your phone and charge your spare battery and the battery in your phone at the same time. (USB cord not included)