2014 version NITECORE i4 universal smart battery Charger For Li-ion / IMR / Ni-MH/ Ni-Cd The 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's four microcomputer-controlled charging slots is capable of monitoring and charging batteries independently. Additionally, yellow and blue power/charging status indicator lights could visibly indicate battery status and charging process. i4: The all-new highly advanced smart charger. It's as simple as insert, detect, and charge. Features Capable of charging 4 batteries simultaneously Each of the four battery slots monitors and charges independently Compatible with and identifies Li-ion (26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries Optimized charging design for IMR batteries Features three charging modes (CC, CV and Trickle Charge) Automatically detects battery status and selects the appropriate voltage and charge mode 3 Color LED displays charging progress for each battery Automatically stops charging when complete Features over-charge prevention to protect batteries Features temperature monitoring to prevent overheating Made from durable ABS (fire retardant / flame resistant) Features reverse polarity protection Designed for optimal heat dissipation