YESOO External Travel Wall Battery Charger With USB Output And Smart LED Light Indicator For Samsung Galaxy S3 SIII I9300 and Galaxy S4 i9500 (180 Days Warranty) Compatible with: Both Galaxy S3 AND Galaxy S4 Battery INPUT: AC100-240V~50/60Hz 150mA OUTPUT: DC4. 35V , USB OUTPUT: DC5.2V 800mA Allows charging via USB port same time (USB cable not included) Charges from a wall outlet directly, Easy and convenient to charge a spare battery