BasTex USB dock wall charger for Samsung Galaxy S4 i9500 plus One (1) Spare 2600 mAh S4 battery Dual-Charging cradle will charge a battery held in the cradle AND a cord plugged into the USB outlet. Cradle Charge Output: 650 mA USB Charge Output: 1000 mA Compatible with almost all Samsung Galaxy S4 phones (all major US carriers and major International versions) NOT compatible with the Galaxy S4 Active (the Active is not an S4 model, but a completely different phone)