I helped some guys build a amusement ride tower and they had a cordless lithium hytorc multiplyer. Digital readout for the torque settings on the back of the gun. The installers loved it. No cords, hoses or anything. I think it went to like 2,000 ft. lbs.
I don't know if the installers really knew the cost of the tool, but they said above $10,000. Which sounded awful expensive to me.