When this first arrived, I was a bit disappointed by how unsubstantial this little machine felt, but I've just used it for the first time, and the second it hit the rug, I could feel a surprising amount of power. And the fully-charged battery allowed me to vacuum my two small carpeted rooms twice without losing any power. And when I emptied the dust cup (which was incredibly easy to do, by the way, and your hand goes on the inside of the cup, while the dirt is stuck to the outside, so your hands don't have to ever touch the dust) I was amazed by how much dust it had picked up!