The cable to the base station is a simple 2-core cable with low voltage. You can cut it and extend it yourself (caution: probably loss of warranty in the event of damage...), you just have to pay attention to the polarity.

We do not have a direct cable of the robot lawnmower that is longer, but we do have several T13 extension cables that are for outdoor use, you can find them here: Galaxus - rallonge - exterieur