Yeah, TR, it is the 21" self propelled w/ the 7.5 batt says it's supposed to cut 60 min and recharge in 60 min. The wheel drive is independent of the blade drive. Yes the wheel drive does go into free wheel when shut off and sometimes to pull it backward you have to push it forward a little to free wheel backward. I adapted my dethatching blade with the plastic strings to it today. Had to tack the little adapter with the 3/8" hole in the center and ream it out to slightly over 5/8". When the front yard dries enough I'll see how well it does. I found the motor is well protected as I was dethatching just to see how it would do and hit a high spot and it instantly stopped and the amber lite started flashing. Linda wanted to talk for a minute, so left it and when I came back it was ready to go. For mowing mine will be used mainly for around all the edges and the Dixon does the rest. I can't mow with it yet 'cause my grass is still asleep. Our local Ace had it for $529 and a $30 off for their club members so the $30 off almost ate up the sales tax, LOL. Home Depot had the same for $499 but that would be a 120 mi round trip for me. For about $100 more you can get the 2 blade model. I don't what the point of it is unless it's a better mulcher.
Mike