Sorry, but now I'm lost.

The GT Power A-6-10 charger is a DC powered charger, it does not plug into the wall. The power supply does that.

OK, I think I understand the q now - no, charger does not come with an 'adapter' (power supply). You will need to get one, Radio Shack has some. Remember, the charger can't charge anything that it doesn't have enough power for. If you get a small 'adapter', charger will not be able to do much.

I use a 13.8v 25amp supply by Radio Shack (thats 345watts). If you could find a 20amp supply, that would power the charger to its full 200watt potential. A 15amp supply would run the charger at about 95% of its power. This is assuming the voltage is 13.5-13.8v. Unfortunately at Radio Shack, you're prob going to spend more on the 'adapter' than you did on the charger.