Anyone know how to convert a cordless drill to corded?

[Mikeymetal]

I was checking out Glen's (worntorn's) thread on a homemade welding positioner, and he's using a corded drill to power the thing. Eureka!!! I have a similar project and I need a way to power it, I also have a couple of old cordless drills. one is a 14.4 volt makeeta with dead batterys. but the thing had enough torque and most important a really prercise trigger. the speed control was better than any cordless tool that I have ever had. so the plan is to rig thing up to the crank on my positioner and use some kind of cables to control the trigger and direction by foot. (this is a new idea to me, so haven't quite got those details worked out) What I'm wondering is if anyone on this forum would know how to wire up one of these little motors to run off something else like a transformer or even a lawn tractor battery. If I used a battery i couild build a battery tender into the setup and i cant imagine efer having to use it long enough at 1 time to ever kill the battery. problem is that a cordless tool battery has extra terminals on it that ihave no idea what they do. please put in your 2 cents especially if you know how thesae batterys work. os a mbetter idea on how to spin this thing pics to come tomorrow