A brilliant tool! – This thing is magic,It's light, fast recharging and very easy to manoevre around furniture and under beds. For saying it runs off a battery it's quite powerful. Hate to admit this but it's a pleaseure to vacuum my floor now. I will never go back to a vac cleaner wih a power cord. It need a trigger lock. that's the only downside. an aching finger. Dyson should retorfit this onto all of them for a small cost Light, Fast recharge, Big Suck, No Cord No trigger lock