RBHarter
West Central AR
I just went through this sort thing with the F350 I was down to a sick battery or charging issue ........ I went to change in a known good battery and the ground cable clamp broke in 3 pieces . I replaced that and descaled the posts putting it on the charger and went to the other battery . Danged if both clamps on it didn't come apart almost the same way . 2 new copper clamps on the battery with clean cable ends and the main draw battery fully charged the second (formerly main) battery only pulling 4 amps on the 10 amp charger and cranked like a new truck . There wasn't anything wrong with the batteries and the posts and clamps weren't even really bad just broken and not making full contact .
Once long , long ago I had a swaged eye end get oiled and work loose . Either way it was a loose connection .
Once long , long ago I had a swaged eye end get oiled and work loose . Either way it was a loose connection .