Cybertech 2 x High Power 1800mAh Li-ion Batteries + Multi Function USB Charger for Samsung Galaxy SII Epic 4G Touch SPH-D710 (Boost Mobile) Includes 2 x 1800mAh Li-ion batteries + 1 x compact wall charger Chargers USB port allows you to charge with a USB connection (USB cable not included) Batteries have an integrated microchip that prevents overcharging to lengthen batterys life Compatible with Samsung Galaxy SII Epic 4G Touch SPH-D710 (Boost Mobile) and SCH-R760.