This is certainly the best battery vacuum cleaner we have found to date - the speed of a battery backpack and no cables, ideal for day time cleaning and any areas where cabled machines can't go. The 36volt battery slots neatly into the back of the machine, and even with the battery the machine only weighs 7.3kg. The battery has a 30 minute run time, and takes only 3.5 hours to charge. Additional batteries are available for continual use. Integrated hand held on/off switch with battery charge LCD display. Comfortable shoulder strap.