Forum Discussion
RoyB
Oct 12, 2015Explorer II
Easiest way to tell is to put a multimeter across the battery terminals without shore power connected. If it is fully charged it will read 12.6-7VDC.
Then turn on shore power and this DC VOLTAGE reading should jump to 13.6VDC (or higher) depending what charge mode the converter/charger is doing...
Bothe the converter/charger and the battery cables feed the same point of the 12VDC Distribution Panel where the fuses are located...
Another simple method to tell if the battery is in the circuit is turn on the ceiling lights in the trailer without shore power hooked up. They should come one if the battery is connected to the 12VDC Distribution Panel.
common failure is having the disconnect switch opened up - blown fuse very close to the battery terminal - blown two reverse polarity fuses in the 12VDC Distribution panel - bad converter/charger unit or circuit breaker tripped when shore power is on...
If you have recently pulled the battery out you may hooked up the battery cables wrong...
I always look for the WORD 'NEG' or the SYMBOL '-' on the battery case and make sure this terminal goes directly to the trailer frame ground...
Roy Ken
Then turn on shore power and this DC VOLTAGE reading should jump to 13.6VDC (or higher) depending what charge mode the converter/charger is doing...
Bothe the converter/charger and the battery cables feed the same point of the 12VDC Distribution Panel where the fuses are located...
Another simple method to tell if the battery is in the circuit is turn on the ceiling lights in the trailer without shore power hooked up. They should come one if the battery is connected to the 12VDC Distribution Panel.
common failure is having the disconnect switch opened up - blown fuse very close to the battery terminal - blown two reverse polarity fuses in the 12VDC Distribution panel - bad converter/charger unit or circuit breaker tripped when shore power is on...
If you have recently pulled the battery out you may hooked up the battery cables wrong...
I always look for the WORD 'NEG' or the SYMBOL '-' on the battery case and make sure this terminal goes directly to the trailer frame ground...
Roy Ken
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