dual batteries drain quickly
Dual 12 volt batteries drain and are dead within 6 hrs. Everything seems to work correctly boondocking and on shore power. while boondocking the batteries will go dead within 6 hrs. I put new batte...
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I would bet you are not getting charged properly, assuming the batteries are OK.
Do a few voltage checks to see what might be.
Check the unit batteries with nothing connected:
Check the unit batteries with the engine running:
Check the unit batteries with the unit plugged in to shore power:
Check the converter output right on the converter itself to see what the converter is putting out:
Check the vehicle battery when off:
Check the vehicle battery when running engine:
Most likely, there is a very loose wire somewhere, and while you think the unit should be fully charged, you have a loose connection and the charge voltage is just causing a loose connection to heat up.
In my case, everything was like you said, but I found the negative wire at the converter negative terminal to the battery was so loose it was barely connected. It had heated up and melted a bit of insulation, would not charge the batteries and worked fine with a couple of turns on the screw head.
Do a few voltage checks to see what might be.
Check the unit batteries with nothing connected:
Check the unit batteries with the engine running:
Check the unit batteries with the unit plugged in to shore power:
Check the converter output right on the converter itself to see what the converter is putting out:
Check the vehicle battery when off:
Check the vehicle battery when running engine:
Most likely, there is a very loose wire somewhere, and while you think the unit should be fully charged, you have a loose connection and the charge voltage is just causing a loose connection to heat up.
In my case, everything was like you said, but I found the negative wire at the converter negative terminal to the battery was so loose it was barely connected. It had heated up and melted a bit of insulation, would not charge the batteries and worked fine with a couple of turns on the screw head.
