Nitecore i4 bundle with Four NL183 18650 Batteries The Intellicharge i4 is a universal, automatic smart-charger compatible with almost all types of rechargeable batteries thus 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 has four microcomputer-controlled charging slots which are capable of monitoring and charging the same type of batteries. It's as simple as insert, detect, and charge. Charger Features: -Four independent charging slots -Automatically identifies Li-ion, Ni-MH and Ni-Cd rechargeable batteries -Automatically detects battery status and selects the appropriate voltage and charge mode -Three LEDs display charging progress for each battery -Automatically stops charging when complete -Features reverse polarity protection Nitecore i4 Charger Specifications: Input voltage: AC 110~220V 50/60HZ or DC 12V Input power: 10W Output voltage: 4.2V plusmn;1% / 1.4V plusmn;1% Output current: 500mA times; 4 / 1000mA times; 2 Dimensions: 139mm times; 96mm times; 36mm Weight: 156g (without batteries and power cord) Compatible with: Li-ion: 26650, 22650, 18650, 17670, 18490, 17500, 17335, 16340(RCR123), 14500, 10440 Ni-MH / Ni-CD: AA, AAA, A, SC, C Nitecore NL183 18650 Battery Capacity: 2300mAH Voltage : 3.7v Charging current : Max 2A (1A recommended) Weight : 45.5g Size : Diameter 18.6mm ; Length 70mm 2X EdisonBright AA to D battery converter spacers included. These allow use of rechargeable AA batteries in D battery equipment.