The dewalt dcb119 xr universal li ion car charger charges all xr li ion dewalt 108 144 18 volt slide pack batteries it uses the dewalt 2 stage charging system the intelligent charger varies the charge rate according to battery type to increase battery pack life the diagnostics with bright led indicator communicates the battery charge status charged charging power problem and battery too hot or too cold voltage 10814418 volt battery chemistry li ion charging current 25 amp