The Nitecore D2 is a universal smart charger compatible with almost all cylindrical rechargeable batteries｣ｬ thus eliminating the need to own several chargers. The D2 automatically detects Li-ion｣ｬ Ni-MH and Ni-Cd batteries｣ｬ and through manual selection is also capable of charging LiFePO4 batteries. Intelligent charging circuitry selects the optimal charging mode (CC｣ｬ CV and dV/dt) for a given battery and each of the D2's two microcomputer-controlled charging slots then monitors and charges the battery independently. Furthermore｣ｬ an integrated digital LCD screen clearly displays charging progress｣ｬ voltage｣ｬ current and time while an intelligent automatic power-off function terminates current when charging is complete. The Nitecore D2: The world's most advanced fully-automatic digital charger. It's as simple as insert｣ｬ detect and charge.<br />Specifications <br />Input: AC 100-240V 50/60Hz 0.25A(MAX)｣ｬ DC 12V 1A<br />Output voltage: 4.2V &#177;1% / 3.7V &#177;1% / 1.48V &#177;1%<br />Output current: 500mA x 2<br />Compatible with:<br />Li-ion / IMR / LiFePO4: 26650｣ｬ 22650｣ｬ 18650｣ｬ 17670｣ｬ 18490｣ｬ 17500｣ｬ 18350｣ｬ 16340 (RCR123)｣ｬ 14500｣ｬ 10440<br />Ni-MH / Ni-Cd: AA｣ｬ AAA｣ｬ AAAA｣ｬ C<br />Charger Dimensions: 143mm&#215; 74mm&#215;36mm<br />Feature<br />1 Capable of charging 2 batteries simultaneously<br />2 Each of the two battery slots monitors and charges independently<br />3 Compatible with and identifies Li-ion (26650｣ｬ 22650｣ｬ 18650｣ｬ 17670｣ｬ 18490｣ｬ 17500｣ｬ 18350｣ｬ 16340(RCR123)｣ｬ