Einhell offers this lawn mower that cuts at a maximum width of 37 cm, which makes it suitable if you have a smaller lawn.
From ManoMano
3413172 ge-cm 36/37 Li-Solo Power X-Change Lawn Mower 36V Bare Unit - Einhell
ITS
Einhell GE-CM 36/37 Li-Solo 36V (Twin 18V) 37cm Lawn Mower - Body