I'm starting to put together plans for creating a DIY lighting system.

I was thinking of looking at a cordless drill battery to power the system.

Are these a good way to go?

How would you attach the wires to the battery? Use electrical tape to tape the bare end of wire to the metal contacts of the battery?

Any better systems?

I don't remember junior high school shop class very well. What are the calculations required to determine if a battery has enough volts/amps, etc to power a light?

Thanks for the assistance!