Thanks for the information guys. I went back out there today and when I started the truck engine, it gave enough power to start the generator which I ran under load for a while. I then turned everything off and removed the house battery and have it charging now. I doubt it is going to hold a charge as it is now 6 years old but we will see what happens. For some reason yesterday the engine would not turn the generator over, but today it did. Anyway I will charge the battery overnight and check it again. By the way the battery showed 12.4 volts AFTER I ran the generator, but like I said, it probably won't hold.