I had mainly bought this vacuum cleaner to easily vacuum my van. It's just good enough for that, because I don't think the suction power is particularly great. You really have to push the squeegee against the surface to be vacuumed, which is not always successful if you have to vacuum under the seats of the car, for example. You should certainly not expect the same suction power as a regular vacuum cleaner.
The battery life is very nice. Was able to extensively vacuum my car on one battery charge of my 5 Ah battery. And because I have several devices on the same battery, I still have one as a spare for when the first one is empty, which is a big advantage compared to battery vacuum cleaners with a unique own battery system.
For small corners it is very handy that you can also vacuum with the hose, with all kinds of attachments. I did miss a brush head, but I was able to easily buy one from another brand because of the (standard) hose mouth diameter of 32 mm.