Plug-in charger for 1-4 AAA or AA cells as well as 1-2 pcs 9V Block. Suitable for NiCd and NiMH rechargeable cells, automatic refresh function, capacity quick test, ultra fast charging, Negative Delta V charging, individual supervision of each cell position, faulty cell detection, clear indicators and controls for each charging position, switch mode power supply for worldwide use, includes primary plug set (Euro, UK, US and Australia).