Aukru USB Wall Spare Battery Dock Charger - USB Charging Station for Samsung Galaxy S3 GT-I9300,EB-L1G6LLUCSTD,EB-L1G6LLU,EB-L1G6LLU, EB-L1G6LVA Input: AC 100-240V ~ 50 / 60Hz 0.15mA Output: DC 4.2V 350mA ~  50mA(battery); 5.2Vd.c. 800mA(USB) Compatible with: Samsung Galaxy S3 i9300 / S3 LTE GT-i9305 Package: 1x US plug battery charger (not include cable& battery) Smart LED indicator, quick charge with automatic constant current control prevent battery from overcharging