Hi Eric, the power supply will be an off the shelf, plug in 12v power supply. I have been told there are plenty of them about, just don't know how to get the 12v down to 7.2v. An adjustable source would be better so I could adjust the voltage to the speed/torque I need. It has got to have enough grunt to lift an Hitachi TR12 router, a heavy little beast. The planes I have for the set up, the guy used a 9v screw driver, but said any where between 3v and 9v works lovely. Just need a power supply. Yes I did run a search on "cordless", did not find any-thing of use. Will keep trying. thanks Syd.