The Nitecore Intellicharger new i4 is a new universal, automatic smart-charger compatible with almost all types of rechargeable batteries eliminating the need to own several chargers. The i4 is able to automatically identify Li-ion, Ni-MH and Ni-Cd rechargeable batteries and apply an appropriate charging mode (Constant Charge Current (CC), Constant Charge Voltage (CV) and Trickle Charge). Each of the i4’s micro processor-controlled charging slots is capable of monitoring and charging batteries independently. Additionally, yellow power/charging status indicator lights visibly indicate battery status and charging process. Revolutionary Upgrades Include: 100% charging acceleration (in comparison to the i4) Active current distribution technology Expanded compatibility to support 3.7V and 4.35V batteries IMR battery recovery Automatic current selection based on battery capacity Specifications: Four independent charging bays Circuitry automatically detects the size, chemistry, and capacity of each battery inserted Independently determines the correct amount of voltage and current for each bay Sets type of charge from constant current, constant voltage, or trickle-charge, depending on the needs of each battery Compatible with: Li-Ion: 26650, 22650, 18650, 17670, 18490, 17500, 17335, 16340(RCR123), 14500, 20700/21700 (without damaging the wrap) Ni-MH and Ni-Cad: AA, AAA, C