Strange start behavior

rvnw

Member
I went to go start my 2002 Frieghtliner and it acted like the battery had been drained, completely. No interior lights or instrument lights. Tried to start it with my house battery by enabling the isolator switch (battery dr), but there wasn’t enough umph in the house battery to start the engine. Hopped out and measured the voltage on the starter battery and it was fine 12.6V. Started up just fine after I went back to try it again. Went to the battery place and they load tested battery they said it was fine.

There is rain water dripping over the battery, which makes it look like it could have been slightly connect but I didn’t wipe it clean.

Any ideas what might be happening?



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