The intelligent charger IPC-3 can charge NiCd and NiMH batteries as well as the increasingly popular Li-Ion cylindrical cells. This includes common 18650 batteries, as well as sizes like 14500, CR-123A, and more. Batteries of various sizes and capacities can be easily charged in all four charging slots. The operation is very simple and user-friendly: just insert the batteries, and the device begins the charging process. The charger also features a battery test function that automatically detects the condition of the battery or whether a battery has been mistakenly inserted. If necessary, the refresh function is activated to help restore the battery to full performance and extend its lifespan. The LC display with backlighting allows users to always check the current parameters and charging progress. Special features include: battery defect detection, battery recognition, refreshing/regenerating, automatic battery test, individual slot monitoring, discharge function, maintenance charging, graphical display, adjustable charging current, minus delta U cutoff, temperature monitoring, and timer cutoff.