Anyone know of a good battery operated crimper for services?

I don't know of any bad ones!

Personally, I like the Panduit with the four pins that come in ... no dies to change.

P.S.: I don't own ... I borrow / rent from the supply house as needed.

Back in the day i used the Panduit ones daily doing connections for cell phone towers, battery backups, cable ladder grounding, lightning arrestor wiring, etc. and absolutely loved it. Batteries lasted pretty much all day and not having to change dies all the time was a great convenience. They were pretty heavy, and haven't seen one lately, but I could see them being alot lighter with a lithium Ion battery