There was a guy on CL up here (Binghamton, I think) that was selling a JD model 212(?) that was an electric conversion with PTO drive for the blades... it was nice, motor was all painted up to match the JD tractor (Green and Yellow). I wish I'd had $5000... I'd have bought it. Looked to have about 3 batteries, and the guy said it had around 1hour run time on a charge.
EDIT:
Here it is.. Owego NY
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