I'd say about 15-20 minutes of continuous full power, then it stops and you need to charge it. It is worse than some of the power tools I have that last for months on the same charge, but maybe it needs a lot to do this type of work. The suction is average, not very strong. But it is good for small places, like corners or stairs, also there are some things like books, keyboards , various memorabilia or electronics that you may want to clean without applying too much suction power. It is very light, like a cordless drill.