Featuring German engineering know-how and microprocessor control, this Ansmann Powerline 2 charges a single or dual PP3 (also known as E Block) 9V nickel metal hydride (NiMH) rechargeable batteries. Its straightforward design makes this portable charger intuitive to use, with two colour-coded LED displays and individual monitoring for each PP3 battery slot. Main features: - Automatic cycle initiation at a charging current of 70mA, whether for single or dual cells. - Switchover to pulse charge top-up, on reaching nominal Ni-MH cell potential of 8.4 Volts. - Over-charging protection via an integral safety timer. - Protection against defective or incompatible (e.g. alkaline non-rechargeable) cells. - Reverse polarity .