Our 1 acre (less house sf) neighbor loves his 80v Ryobi riding mower ($5000+),
so the take away for your fraction of acre would be get hi-voltage for cutting strength ...
then shop high amps batteries when on sale for duration.
https://www.homedepot.com/p/RYOBI-40V-Lithium-Ion-2-4-0-Ah-Battery-4A-Fast-Charger-Starter-Kit-OP404042408/332361449There are better brands than Ryobi (Home Depot) out there if not yet loaded with their tools, some are discussed here on a chain saw thread in 2025.
Other tips learned since the 80s:
No Flat tires are a BIG PLUS, if an option
No gas jug refill trips a big plus
Self-propelled is a Must
At 40x40 sq yrds (1/3ac not discounted for house footprint sf)
My 2008 Craftsman's-best rider 13hp finally blew smoke in 2024, so the 1/3ac to mow on my 1ac got a new on-sale Deere S100 17hp that does it faster & in only minutes, making me feel pampered. No-flat tires option missing & gas jug refill trips, my only regrets.
Gotta draw since me got no grammar MasterArch '76