DD has the SunJoe electric mower. Works great for her tiny lawn. I used it and it was fine. But the cord was similar to vacuuming and the grass catcher was so small it had to be emptied frequently. There were no adjustments settings and it dint mulch the cuttings fine enough. Folds down tight enough to out in the small outside utility closet. From Amazin $80
GF has a Ryobi (??) Battery powered mower deck that attaches to her weedwacker that turns it into a mower. Interesting concept that works! From Home Depot. About $100. But again , no settings, this has no grass catcher, and she goes through string like crazy!
Old neighbor had a full size electric mower from Ryobi, I think? It had some adjustments and was a light, full size mower and very quiet. I think she spent about $250 at Lowe's.
Many alternatives out there to use instead if the traditional gas mower. Good ones, too!