I had my 1951 4400 at the shop for brake work and wiring for tail/stop lights recently and brought it home on a wet Sunday evening. The truck ran fine all the way - about a 6 mile drive but stalled as I pulled into my driveway which is a good 15/20 degree grade. I tried to start it again but no go, the battery struggled to crank the engine over a few times and then nothing. Since it was at the end of the driveway and to far from the house to run a cord for the charger, I used my 2004 Silverado to jump it. It started immediately and I had the cables connected for maybe a minute or less and then drove the rest of the way up the driveway and parked it for the night. It was a cold, dark and rainy night and it could wait until the next day. The next morning I thought I would try to start it with the battery as it was left the night before. The engine cranked over like there was a new battery in it and the truck started quickly. I let it run for a bit and noticed there is no movement of the ammeter when I rev the engine a bit. I shut it off and put a dvm on the battery to get 6.28V I started it again and notice the battery voltage go to 6.15V and again, no change if I rev the engine. The guy I bought the truck from said the battery was new last year but who knows? I had the generator rebuilt earlier this year. Anybody have any ideas what might be happening?
