With the Powerline 4 smart charger you can easily charge up to four AA and AAA batteries. The battery charge level before the start of charging is irrelevant, because each battery slot is monitored separately, so that the batteries are charged independantly of each other.For the easy and quick reading of the charging status of your batteries, a colored LED display is integrated over each bay.Easy to useThe device recognizes your inserted batteries completely automatically and without the annoying adjustment via buttons or switches. The charging process starts immediately after you have inserted the cell in the correct polarity. The device detects defective cells independantly and gives you a hint to sort them out.Repair modeThe Powerline 4 smart enables deep-discharged cells to be reactivated. The charger detects the condition of the batteries and starts a fully automatic repair mode, whose special, gentle pulse charging technology refreshes the batteries again and tries to bring them