Vacuum for as long as you need. The Unlimited will never let you down. The Unlimited provides infinite* runtime, thanks to exchangeable battery packs and a quick charger. One battery can be charged while the other battery is in use, so the device is always ready to go. *Runtime is infinite with the included Bosch quick charger, two 3.0 Ah Bosch Power for ALL batteries and running on normal power mode, because one battery can be charged while the other battery is in use.