u/DragonHH30

Hey guys
I recently bought an Flama ProExtreme Pet 85 Vertical Vacuum cleaner and i got a bit confused on how to install the wall mount.
I tried to put the cleaner with the batery in that large slot but the cleaner is so heavy that it slides down.
Does this means that i have to put it in a way that the bottom part touches the ground?

Sorry for my english and any help will be appreciated