The BC-0905A Quick Charger has 4 independent charging channels (charges 1 or 4 AA/AAA Ni-MH/Ni-Cd batteries) with UK plug. It charges most batteries in approx. 6 to 7 hours (safety shutdown after 3.5 / 7 hours) 6 times safety: single channel monitoring with DV detection, overheating, polarization, overvoltage, short circuit protection. After the batteries are fully charged, the device switches to the trickle charge. With LED indicator.