Samsung Galaxy S3 SGH T999 T-mobile - External Dock Battery Charger and Micro USB Data Sync Cable Wall Home Spare Extra Travel III
This amazing charger is Lightweight and portable - perfect for travel.  A Complete charging solution for cell phone batteries.  USB port located on top - charge your phone while charging a spare battery. Note: USB cord included.Compatible with: Samsung Galaxy S3 SGH T999 T-mobilePlease Note: The sticker on the charger will not specifically indicate T999 however be assured this is the correct charger for your T-mobile Galaxy S III battery.Set Includes: External Charger and Micro USB Data Sync CableOnly the positive and negative are used to charger the battery hence the two prongs on the charger