Ive got one of the clarke battery powered cordless ones. Its done all ive ever needed for routine day to day jobs on my car for the last 5 years ive had it, including surviving a underside resto on a fiesta including all running gear and subframes off and on again.

Not sure how durable it would be in a high usage situation such as a garage.

Also dont forget you should always do the final nip up with a torque wrench anyway.