How much yard can a cordless mower actually handle on one charge?

It depends on battery capacity and grass conditions. Across the reviewers we read, push and self-propelled 40V–80V mowers with a single 4–7.5Ah battery typically cover roughly 1/3 to 1/2 acre, but high-trust community threads repeatedly note that thick, tall, or wet grass cuts runtime sharply. Owners of larger lots almost universally recommend keeping a second charged battery on hand.