The Nikon MH-19 Multi Battery AC/DC Charger can sequentially charge up to two Nikon EN-EL3, EN-EL3a and EN-EL3e lithium-ion batteries. A 12-Volt cable is included for connection to a cigarette-lighter socket. The MH-19 supports voltages from 100-240 Volts which makes it compatible with charging overseas with the appropriate optional plug adapters. It is also capable of charging the Nikon EN-3, EN-4 and MN-15 (requires optional MC-E2 charging cord), as well as the MN-30 (requires optional MC-E1 charging cord) batteries. Ideal for photographers on the go. The Nikon MH-19 helps power the Nikon F5, F100, D1, D1H, D1X, D50, D70, D70s, D100, D200 and D80 SLR cameras. >>> The Two (2) Nikon EN-EL3e Rechargeable Li-ion Batteries are Genuine Nikon Brand Battery Packs -- the very best that money can buy for your camera and two spares are better than one. With constant shooting, flash usage, image review and playback, your standard battery alone will not usually be sufficient. In addition, a battery loses power in cold weather, and can become too cold to operate the camera. Keeping a spare battery warm in your pocket to maximize battery power and periodically switching the cold battery for the warm one can significantly enhance battery performance. >>> The Nikon EN-EL3e Li-ion Batteries are memory-free and can be charged at any time without harm, even if they already have a partial charge and they can typically be charged over 1000 times.