MR / Li-ion:
26650, 22650, 18650, 18350, 18490, 17670, 17500, 14500, 10440, 16340 (RCR123).
Ni-MH / Ni-Cd:
AA, AAA, AAAA and C .
The Nitecore 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 visibly indicate battery status and charging process.