The Nitecore Intellicharger i2 is a universal, automatic smart-charger compatible with almost all types of rechargeable batteries, thus eliminating the need to own several chargers. The i2 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 i2's two microprocessor-controlled charging slots are capable of monitoring and charging batteries independently. Additionally, yellow and blue power/charging status indicator lights will visibly indicate battery status and charging progress. The Nitecore i2: The all-new highly advanced smart charger. It's as simple as insert, detect, and charge.