Quote:
Originally Posted by Tom N3EQF
I suspect that either the RV's converter/charger is failed, or a circuit breaker between the batteries and the converter is popped. Since you get 4 of 4 LED's with the alternator supplying the charge, it seems the converter is the problem. With the generator running or when you plugged into shore power, you should see 4 of 4 LED's showing that the converter is charging the batteries.
Be aware that it takes many hours of charging to get the batteries back to life after being run down that far. So you would need to get the converter (or an external battery charger) going for a good overnight if the batteries are ever going to charge.
If after a healthy charging time the batteries still fall off quickly, then they are truly dead.
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Tom is correct. And you should see all 4 LEDs lit when plugged into shore power as it is a simple voltmeter. It does not tell you the state of charge of your batteries when they are charging but it does tell you that there is enough voltage on the DC buss to charge them.