Who's got a Battery powered push mower? Any worth a hoot?

I got a free electric mower from a disgusted customer that needed a new battery. Battery was 80 bucks but turned out to be 2 12v "Powerwheels" in series in a case for 24v total power. This mower sucks. It may mow a golf green but put some 2" grass in front of it and you have to mow 1/2 a stripe at one time or it will bog to nothing and it barely has the beans to bag the clippings. I guess all the new models are 40v+ and thats good news. Maybe I'll try another 12v cell for 36v on this turkey. Hey, it and the batteries were free so I gave it a shot. Maybe ill bone it out for a bike or scooter motor.....