I bought an Astro Flight 110 to 12V power supply for about $75 from Hobby Lobby. Sounds expensive but isn't so bad when you add it up. If you buy a car or motorcycle battery and charge it with a regular battery charger and then use it with your Triton It will work just fine. All this assumes that you already have a regular car battery charger. Some of the mortorcycle batteries that have enough capacity to do the trick will still cost you about $50. There are regular automotive batteries that cost less and will do just fine if space isn't a problem.