I've mowed lawns forever using a corded mower and it's not
that bad. I thought cleaning out the clippings bag was a bigger PIA. If you are going to make the thing battery powered, you might as well go full bore and make an RC mower.
Personally, I'd use a push mower and not send money to Big Oil
or Big Electricity.
The ecomodder outline should be:
Human Power >
Animal Power > Electric Power >
Gas Power.
- LostCause