This charger will only work with single layer battery (such as Stock battery). It will not work with double layer extended battery. If you have a double layer extended battery, which has twice the thickness of the stock battery, this charger is not for you. ====================================================================== 1)AC/USB Desktop Battery Charger : * Quick charge with automatic constant current control prevents battery from over charging, short circuit, and electronic shock. * Charge your cell phone battery without the phone. * Also work with OEM (original) battery. * LED charging light indicator. Turn red in charging, turn blue when done. * Input: AC 100-240V 50/60Hz 150mAh. * Output: DC 4.2V 350mAh ?? 50mA. * USB Port Output: 5.2V 800mAh. * Use this charger to charge the stock battery as well, swap one out when the other dies. 2)3900mAh Excellent Replacement Li_ion Battery: * Brand: Unbranded/Generic . * High quality Li-Ion battery. * Battery Type: Lithium Ion. * Battery Capacity: 3900mAh . * Voltage: 3.8V. * The best spare battery for your phone. * Best Replacement for the original battery with comparable standby and talk time . * Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using. * Keep an extra battery on hand for extend standby and talk times. 3)Micro USB Flat Cable(3 Feet/1M) * New generic 2 in 1 Data/Charging USB Cable. * Provides high-speed data transfer rates.Software is not included. * Charging your Cell phone by connecting this charging cable to our Wall charger or USB car charger. * Provides data transfer, syncing functions in between your cell phone and your PC or laptop via USB port.