Article number: 8717853704901 View all from Ecosavers > View more: Batteries > This battery charger for NI-MH batteries charges both AA and AAA batteries. There is room for four. You plug the charger directly into the socket, so there is no need for awkward hassle with plugs. The batteries do need to be charged in sets of two, so two or four at a time. First put the batteries in the charger before you plug the charger into the socket. The special thing about this charger is that it automatically switches off completely when the batteries are full. This can save a lot of power if you forget the batteries for a while and leave them connected to the socket for a while. As soon as the light at 'start' is off, the batteries are charged. When using it, make sure that the batteries are rechargeable! The battery charger can also handle a high variety of voltage input voltage, which makes it very suitable for traveling. Specifications Charging times AA: at 1800-2100 mAh = 4.5 hours / 2150-2450 mAh = 5.5 hours / 2500-2800 mAh = 6.5 hours. Please note that exact charging times also depend on the brand, condition and capacity of the battery Charging times AAA: at 750-950 mAh = 4.5 hours / 1000-1200 mAh = 6 hours. By the way, exact charging times also depend on the brand, condition and capacity of the battery Input: 100-240VAC, 50/60 Hz Automatic charging power detection Negative delta V switch-off protection Safety timer to prevent overcharging Short circuit protection Incorrect polarity protection Bad battery detection Note: only suitable for NI-MH AA and AAA batteries, do not try another type Product specifications Battery charger AA/AAA Item description Battery charger AA/AAA Item number 8717853704901 Country of origin China Environmental information about Battery charger AA/AAA The special thing about this charger is that it automatically switches off completely when the batteries are full. This can save a lot of power if you forget about the batteries for a while and leave them connected to the socket for a while. As soon as the 'start' light goes out, the batteries are charged. When using them, make sure that the batteries are rechargeable!