We've got a Black & Decker 12 volt tool kit (drill, saber saw, circular saw, router) and have had problems with the battery going down before we were finished so I made up a long wire that connects to the main component from the house bank. Now I can run all day if I want to. I've chosen the set for it's 12 volt motor. Anything else we need on the boat is chosen for 12 volt capabilities such as our printer and tv. Just plug it into a 12 volt outlet and run it. I could use the inverter but would rather not if it's not necessary.