The Nitecore D4 is a universal smart charger compatible with almost all cylindrical rechargeable batteries, thus eliminating the need to own several chargers. The D4 automatically detects Li-ion, Ni-MH and Ni-Cd batteries, and through manual selection is also capable of charging LiFePO4 batteries. Intelligent charging circuitry selects the optimal charging mode (CC, CV and dV/dt) for a given battery and each of the D4’s four microcomputer-controlled charging slots then monitors and charges the battery independently. Furthermore, an integrated digital LCD screen clearly displays charging progress, voltage, current and time while an intelligent automatic power-off function terminates current when charging is complete. The Nitecore D4: The world’s most advanced fully-automatic digital charger. It’s as simple as insert, detect and charge.                                                                        Specifications            Input: AC 100-240V 50/60Hz 0.35A(MAX), DC 12V 1A<br>Output voltage: 4.2V ±1% / 3.7V ±1% / 1.48V ±1%<br>Output current: 375mA x 4 / 750mA x 2<br>Compatible with:<br>Li-ion / IMR / LiFePO4: 26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340 (RCR123), 14500, 10440<br>Ni-MH / Ni-Cd: AA, AAA, AAAA, C<br>Dimensions: 143mm× 99mm×36mm<br>Weight: 239g (without batteries and power cord)                                                            Package Includes            1 x Charger1 x Cable1 x User Manual                                                            Extra Info            User Manual