Dial Up. Yeah I know the sound and I know the time it took to load anything with. But it’s something I won’t ever miss having. I would much rather be on a 1MB connection if I had to choose between that or dial up ever again. I also hated how easy it was to be kicked off, if anyone called the phone, you were off it in seconds.
Half acre you would definitely need a couple batteries. The longer lasting ones will get 60-70 minutes.
Alternative suggestion: cut down on the amount of grass you have. Clover (especially micro clover) does not get as tall and stays green much easier as well as being good for the soil. Creeping thyme is similar except it is even shorter.
Live in the south, almost no clover or thyme survives the summer. My yards probably half what people consider weeds, aka native plants but it requires regular mowing or Id get a ticket from the city.