Using Milwaukee 8ah 18v batteries

This might be a stupid question, but I’d love to build a board that can be powered off my milwaukee batteries, since I have a bunch and can charge them etc.

If I had to m18s wired in series it would be 36 volts. Will that work with most Escs or Vescs?

Most Escs seem to have a voltage range. Can I simply apply any voltage within that range? Is there any reason to believe it might damage the batteries?

Will it effect board performance?