The Invacare Pronto M41/ P9000 XDT Battery Charger is an offboard charger that includes the power cord for a standard wall outlet and the cord that connects to the powerchair. The M41 and P9000 XDT have an easy to access charging port on the front of the joystick. To charge your powerchair position it close to a wall outlet, plug the cord into it, plug the other cord into the charging port on the joystick and within 8-14 hours the batteries will be fully charged.