A reel mower is a Wonderful machine.
If you can keep it maintained.
Like keeping the blades sharp isn't such a problem, but keeping them Straight to the other 'thing' (the bar they get close to) is a real trick after they have been sharpened a few times. .
If one blade is sharpened a bit more and deeper than the others...? So Do Not hit rocks, pipes, etc
This is Amish country and reel mowers are common. I passed up 3 working units for $1 at an auction. Yes, 33.33 cents each. Less than a postage stamp. (they threw in a big box of bolts and sold it all for $2)
Why? Because it is hard to find someone who can repair a reel mower after it has been "Owner Maintained".
I can not imagine a 24V cordless mower could take 400W from an inverter.
"Battery Recharges to 60-70% in 4 Hours and to 100% in 16 Hours" means it can't be a lot of charger power.
I'd guess the batteries are 2 at 12V SLA. I bet a (Big & HD) DPDT switch could be added to charge the batteries at 12V straight from the solar, with the same controller. Could be a minor issue with the voltage set point, but I don't think it'll be a problem if the charging isn't daily.
"Lighter than a gas mower" (from the reviews) means they can't be very large batteries, and it better to a small yard. Mow in the morning, recharge directly after, and then charge it for an hour the day before the next use?
Bagging or mulching must take a lot more power than a side discharge? Cutting when it's dry would take a lot less power, saving the batteries a bit?
That $500 price tag would stop me cold. 80W more PV? A lot of reel mowers?
G-