mechanical sharpening tools, any solid battery powered rigs?

[painkilleraz]

I know this may seem odd, but any power sharpener recommendations? I have used Arkansas stones my entire life, occasionally sandpaper but never a power rig. We have dozens of farmers markets in the area and sharpening knives could be a solid thing to get into. Obviously, hand cranking on stones seems a bit inefficient at best for that approach.

In most things I do these days barter is awesome, and it would be nice to add to the stable of available options.