EZOPower Battery Charger for Samsung GALAXY S2 / SII I9100 / Galaxy S II SGH-i777 / Exhibit 4G T759 Compatible with Samsung GALAXY S2 / SII I9100 / Galaxy S II SGH-i777 / Exhibit 4G T759 Simply plug into the wall and charge your spare battery. Extra USB output allows you to charge 2nd device simultaneously. Folding wall plug for added convenience. Input voltage: AC 100~240V. DC output: 4.2V / 350mA USB output: 5.2V / 800mA