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Old 04-16-2019, 09:14 PM   #1
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Converter ??? Battery????

So.......not sure if we have a battery problem or converter problem. We leave our camper plugged in all the time. Sometime ago the power came unplugged from the house to the camper. Plugged it back in and the lights are very dim. Would not slide the slide out or work the a/c. Finally after a couple hours we could is the slide and a/c. Left it plugged in and fast forward to today (4 days). Dim lights and can’t work the slide again. I plug the camper in my truck and all is fine when I unplug shore power. No no shore power connected and disconnected from the truck and there are no lights. Battery or converter? All breakers are on and all fuses check good. Need some help. Camping tomorrow!!!!
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Old 04-16-2019, 09:15 PM   #2
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Oops sorry. Camper is a 2017 greywolf 29te
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Old 04-16-2019, 09:37 PM   #3
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What is the voltage at the output of the converter and at the battery?
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Old 04-16-2019, 10:10 PM   #4
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How long was it unplugged?
Clearly the battery was drained low enough to kill it, due to the parasitic power drains. It needs to be fully recharged and tested, preferably with a hydrometer. It may have a bad cell so it may not hold a charge.
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Old 04-17-2019, 07:47 AM   #5
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for sure it sounds like you have discharged the battery. pull them out, take them to an auto parts store, and have them tested. plug in to shore power and see if you have lights. if so, your converter is probably working. if not you may have blown the fuses on the converter. check them.

as mentioned previously, it would help if you took voltage readings and reported them to give a better indication of what is going on.
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Old 04-17-2019, 07:58 AM   #6
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Another option.


Depending on how long the RV sat without power, you may have completely depleted the battery. When you plugged it back in the charge current to the battery may have been high enough to blow the reverse polarity fuses. If this is the case you will have no power when not on shore power. The fuses may either be in the distribution panel or on the back of the converter and are usually 30-40A ( orange, brown). If these are OK, you should also check the resettable breaker near the hitch. see photo below. Push button on side.
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Old 04-17-2019, 08:31 AM   #7
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Going back to where the OP stated that “sometime ago the power came unplugged from the house to the camper.”

Therefore, no one knows how depleted the batteries drained, and in fact may not be recoverable. I’m not sure if the location for the trailer is within eyesight of the house, but here’s what I do.

Our rig is plugged in. I have a night light plugged in and sitting in the window of the RV visible from the house. It only comes ON at dark. It’s an easy check to see that the power is still connected to the rig. No surprise if there’s no power to the rig such as what appears to have happened to the OP.
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