Dewalt dcb xr slide battery packs 108v18v dewalt dcb184 xj this 18v slide battery pack from dewalt is ideal for the professional tradesman as it offers longer life and is compatible with all dewalt 18v tools there is no memory effect and virtually no self discharge for maximum productivity and less downtime it is fitted with a led state of charge indicator that helps to manage charging times dewalt dcb184 xj xr slide battery pack 18 volt 50ah li ion