Features:US plug power adapter charger for?AA / AAA Size Rechargeable NI-MH NI-CD BatteriesEquipped with 4pcs slots， It can charge 4pcs AAA or AA batteries?simultaneouslyBest for digital camera， MP3， clock， flashlight， and etc.Input: 100-240V AC， 50/60HzOutput: 2.85V? 500mA ( AA / AAA * 2 )? 450mA ( AA / AAA * 4 )Note:Please charge two or four batteries at the same timeType AA or type AAA battery charge at both ends of the two slots can not be charged in the mixed， one can not charge a battery by itself.Package Inlcuded:1 x US Plug?Charger for AA / AAA Size Rechargeable NI-MH NI-CD Batteries