User Manual Nequare S26 Cordless Vacuum Cleaner

I don't usually measure my trash in liters. The canister is probably about 1 liter. It's seem adequate for vacuuming a normal house or apartment. If you have pets, you might have to empty it more often.

It doesn’t do a very good job on carpet, especially when picking up dog hair. We have carpeted stairs and I end up using the small brush attachment and a lot of scrubbing

The vacuum cleaner’s floor head is wonderful really, the bristles is soft and comfortable, you don’t have to worry about it hurting your expensive floors. LED is work well, it can illuminate the corners you can't see.

It doesn’t have a hose nor a male fitting so it would be difficult

You get 2 filters and no they aren't washable. But you can brush them off.

You can leave it charging. It stops by itself when it reaches 100%

No. The port to plug the cord into the battery for charging can be accessed with the battery on the vacuum, or off the vacuum.

Yes it comes with a piece you can screw into the wall to hang it. The vacuum also stands on its own so you don't need to screw it into the wall if you don't want to.