The power x change 18volt charger features a 6 step charging condition display and can easily be fitted to the wall the power x charger has an intelligent charging management system for long battery life 1 power x change 18volt li ion battery benefits from a 7 in 1 active battery management system abs and a 3 step led battery control the built in microprocessor controls key parameters like temperature voltage and even a deeply discharged battery can charge in repair mode