I bought another one of these because it was cheaper and a better buy than buying replacement battery's. The little sweeper works great.  The brushes need frequent cleaning because my main use is pet hair and crumbs in the kitchen. It is easy to empty. I hung it behind the kitchen door for quick cleanup.  The battery last a reasonable amount of time and I can get the job done one charge. The problem is the the replacement battery's cost a mild fortune.  It's like the cheap printer with the expensive replacement cartridges.