Update: I only got a good charge from the second vacuum before the battery just flickered and wouldn't charge. Why sell a product with so many problems? An annoying waste of time and effort. 1 star! The first vacuum cleaner that was sent to me had a defective battery that only flashed quickly and would not charge. I knew it was a game based on other reviews. The replacement was easy enough to get through Revain. The second vacuum has a good battery and this little vacuum is perfect for my needs. I have a pet parrot and needed a way to vacuum his carpet a few times a day without having to pull out my big vacuum. This vacuum cleaner does a great job with all the little things that fall on the floor and feathers. It also makes it very easy to walk on hard floors every day and is so much better than sweeping. The charge lasts for about three days of use. It really sucks up a lot of fine dirt with each use. Emptying the drip tray is easy and I do this after each use. Periodically remove the filters for washing and cleaning. It comes with an extra cloth strainer so you can switch between using and rinsing. I hope this battery and vacuum cleaner will last a long time.