I hate, despise and abominate this vacuum cleaner. I got it when there was no power in my house; the power company had cut it off early, and I needed to get it cleaned up for the next owner before they moved in.
The basic idea behind the Dirt Devil Quick Power Vacuum is that you charge it, and it runs without having to be plugged in. While this sounds great in theory, it doesn't work very well in practice. The more I charged it, the more the battery lost power. It finally got to the point where the vacuum had little or no suction at all, and it would be better to be called Quick Wimp.
The vacuum cleaner is for all intents and purposes useless. I strongly recommend against this vacuum cleaner. Instead you should get a manual hokey or a Swiffer Carpet Flick.