Lawn size is critical when you’re looking at choosing your robot lawn mower.
Higher power batteries mean your mower can spend more time out on the job before needing a recharge. This is really important for those larger lawns.
If your mower lacks sufficient battery life it will spend too much time recharging and not enough time at the cutting edge. As a result your lawn may look a little patchy.
Lawn shape is also important. Robot lawn mowers use algorithms to cut along what appears to be a very random set of pathways.
A cheap robotic lawn mower may struggle to cut right into the corners of lawns with very complex shapes.