A good vacuum cleaner that I like shows battery % but only drops to 5%. The battery lasts less than 30 minutes with mixed use of two power modes, which suits me perfectly. When cleaning my house it stayed at 30%. You cannot use the vacuum cleaner while the battery is charging. I love that the bristles still spin when I've had the vacuum on my fluffy rugs before it stops after being on the rug for a second. This vacuum cleaner is not too noisy, portable and easy to empty.