US Plug Quick Charger for AA / AAA Size Rechargeable NI-MH NI-CD Batteries US plug power adapter charger for AA / AAA Size Rechargeable NI-MH NI-CD Batteries Equipped with 4pcs slots, It can charge 4pcs AAA or AA batteries simultaneously Best for digital camera, MP3, clock, flashlight, and etc. Input: 100-240V AC, 50/60Hz