Yeah, all of the sites I poked at had similar stories and options. In your case, I'd be surprised if "reconditioning" succeeds, due to the length of time the batteries were likely 100% drained in storage.

The other option is cell replacement. Most of the places seem to include replacement of up to XX% of the cells as part of "reconditioning", with full replacement of everything needed beyond that.

I posted the link for MTO after reading a review from a rider who suffers from MS and uses a Segway to get around.

Cheers