With this universal charger, micro, AA, C, D, and 9V block batteries can be charged individually and safely thanks to intelligent microprocessor-controlled technology. The device focuses on ease of use and maximum safety. You only need to insert the batteries – the charger takes care of the rest automatically. After the microprocessor-controlled charging, the P600 switches to maintenance charging mode. This prevents battery damage due to overcharging. Charging batteries from different manufacturers and with varying capacity values is also not a problem. A quick glance at the clear display is enough to read the current charge status. It features a USB output for charging MP3/MP4 players, PDAs, portable gaming consoles, etc. Special features include battery defect detection, refreshing/regenerating, individual slot monitoring, discharge function, maintenance charging, graphical display, minus delta U cutoff, timer cutoff, and USB charging output.