Vanites,

Went camping for a week in my 87 Westfakia Syncro TDI. Put the frig on battery for the drive up hoping to get a air flow current started.

It didn't seem cold when I got there but it did light right off on propane, which normally doesn't happen.

And my coach battery was almost drained.

When I measured the voltage at the house batter it was 11.4 or so and the engine battery was 12.5 or so, with the engine off.

With the engine running the house battery voltage was 13.1 or 2 and the engine battery 13.7 or so, regardless of rpm.

Bad battery?

Bad charging relay?

Bad juju?

Mike