Oh, forgot to say:
One reason I'm particularly happy to have found this 12v
rechargeable mower is because I can use it at my workshop/shack, which only has solar power (panels on the lower right side of the roof in this pic):
I've already tried, and the 1500w-rated inverter I have isn't powerful enough to start up a small 110v / 900 watt AC electric corded mower.
And I don't want to use gas, if I can avoid it. (Noisier, stinkier, less fun to tinker with.)