The IPC-3 smart charger is suitable for NiCd and NiMH batteries, as well as for the increasingly popular cylindrical Li-Ion batteries. This includes all common 18650-type batteries as well as 14500, CR-123A and other battery sizes that can be charged in the four slots at the same time The device is easy to use. Just insert the batteries and leave everything else to the charger. The charger comes with an additional battery test function that auto-detects battery condition and also whether a battery might have been inserted incorrectly. If necessary, the charger enables the refresh function restoring the battery back to full capacity, extending battery life span in the process. A backlit LC screen displays all relevant battery parameters and shows you the charging progress.