The Nitecore D4 is a universal smart charger compatible with almost all cylindrical rechargeable batteries｣ｬ thus eliminating the need to own several chargers. The D4 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 D4?s four 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 D4: The world?s most advanced fully-automatic digital charger. It as simple as insert｣ｬ detect and charge.<br /> <br />Features<br />- Capable of charging 4 batteries simultaneously<br />- Each of the four battery slots monitors and charges independently<br />- Compatible with and identifies Li-ion (26650｣ｬ 22650｣ｬ 18650｣ｬ 17670｣ｬ 18490｣ｬ 17500｣ｬ 18350｣ｬ 16340(RCR123)｣ｬ 14500｣ｬ 10440)｣ｬ Ni-MH and Ni-Cd (AA｣ｬ AAA｣ｬ AAAA｣ｬ C) rechargeable batteries<br />- Optimized charging design for IMR batteries<br />- Integrated LCD panel clearly displays charging parameters and progress<br />- Two conveniently located side buttons allow easy selection of specific battery types and charging parameters<br />- Intelligent circuitry detects the battery type and status befo