I've a smallish lawn so I've just been using wired yard tools my whole life. Have to be careful to mind the extension cord but it's dead simple and zero-maintenance. My lawnmower is just about old enough to run for President. Just make sure you get the right cable gauge for your mower, since you're dealing with long-enough runs that resistance loss in the cable is substantial and Home Depot just wants to sell you 100 foot 16 gauge thing that probably shouldn't be anywhere near a proper lawnmower.