The Nitecore Intellicharger i2 V2 is a universal, automatic smart-charger compatible with almost all types of rechargeable batteries, thus eliminating the need to own several chargers. This is the newest version of the i2 charger, with twice the charging speed of previous versions. 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 V2: The all-new highly advanced smart charger. It's as simple as insert, detect, and charge.