Capable of charging batteries simultaneously. Each of two battery slots monitors and charges independently. Compatible with and identifies Li-ion, NiMH, and Ni-Cd rechargeable batteries. Compatible with: IMR/Li-ion (26650, 22650, 18650, 18490, 18350, 17670, 17500, 14500, 10440, 16340/RCR123) and Ni-MH/Ni-CD (AA, AAA, AAAA, C). Optimized charging design for IMR batteries. Features three charging modules (CC, CV, Trickle Charge). Automatically detects battery status and selects the appropriate voltage and charge mode. Three color LED displays charging progress for each battery. Automatically stops charging when complete. Features over-charge prevention to protect batteries. Made from durable ABS (fire retardant/flame resistant) materials. Features reverse polarity protection.