The powerline 8 is an intelligent charger for 1 8 aa or aaa batteries it has a charging current of 500ma with individual supervision of each battery the charger offers multiple over charging protection per battery auto cut off function trickle charging led charge state indicators reverse polarity protection faulty battery detection and alkaline battery detection in addition the powerline 8 has a 5v 1000ma usb socket for charging devices with usb connection eg mobile phones included i