A great vacuum cleaner for daily cleaning after children and cats. They took the version without a battery, the battery was ordered from China, for 3 Ah. It was enough for 3 years of daily cleaning, recharging every 3 days. After 3 years, the battery died (lost capacity), bought another, rejoice again. I plan to buy more equipment on 18-volt batteries so that I always have a spare battery available. The same vacuum cleaner (and its other versions - with a backpack, with spare batteries) are used by professional cleaners for daily cleaning of offices - perhaps this speaks of reliability even more than my "home" case.