This is not a review,
I would better say,
after using my RoboVac 11S for about 1 3/4 year now,
I tell you something about it.
I was looking at my old email folders and found the email where I got the Robovac 11S
donated for testing via Power User Program
(Those were the good old days here 
).
I called him Willy and some of you may know him well.
He got a girlfriend recently in UK (Mary) and a comrade in the USA (Astroboy).
These two are really youngsters, so Willy is like me, his master, an “old boy”.
He is doing his work in our house since that time I mentioned above.
Very, very busy and loyal this robot.
There was never any problem with Willy after I did some altering here in the house
to make him cleaning easier
(cables, carpet fringes etc.)
So I checked the battery today :
Indeed 134!!! minutes when cleaning at normal suction.
(I haven’t checked the charging time, as it doesn’t matter for me)
But I added some photos of Willy, to show you his condition.
I had to glue one of the “slats” of the middle brush (hope this is correct expression),
but you all know, what I mean.
This worked perfectly, so there was no need to change that brush, though it can be bought as replacement.
The side brushes are really in perfect condition too after the long period I use the old boy Willy.
I clean the paper filter always with a brush.
This is really the original first one.
I changed the foam layer on top of that paper filter.
It was easy to replace, there is no need for a special one.
Any similar foam will do.
Hope Willy will be working this year without any problems,
but I do care for him, so there is no doubt at all.
He will, because he is Willy!
Resume:
Fantastic!
THANK YOU EUFY for such a good and free product!
all correct, and it was