Hi. What are your experiences of recent lithium battery powered lawnmowers?

I currently have a big cylinder mower and find it isn't ideal for my needs. Due to kids we have swings and climbing frames to cut round. The lawn is also pretty small at 75-100m^2. I find the cylinder won't cut soldiers or 'stingers' ie the taller seed bearing stalks of the grass because they're rolled flat by the front roller. It also struggles with the coarse agricultural and wild grasses that infiltrate from neighbouring fields as these also grow tall quite quickly. I'm therefore looking for a battery powered rotary one instead. I don't expect battery life to be an issue given the size.

I have a worx 18v drill, which I understand is compatible with the newer 20v worx kit and also with a number of other brands like einhell, so I'd like to use that compatibility if I can, although I'd expect to but a lawnmower with batteries rather than a bare body.