Battery run Lawn Mower questions

[GOPAPA]

How about some opinions about battery run Lawn mowers and what you have or prefer for brands that are good as gas run ones or are they as good or better..

My lawn mower is gas driven and it takes about 1/2 gallon of gas a week to mow my two lawns ,, have no idea of how much money electricity would cost to charge batteries ,,I use non ethanol gas in my mower now and of course have to drive to get it and then store it and ,,,well ,, maybe battery is better ?
Thats really my question to any of you in the know .