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Old 05-28-2013, 08:22 PM   #1
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HELP!!!! no battery power to anything

So I recently bought a used 2002 flagstaff model 228-mac by forest river popup. I bought a battery since it didn't come with one and nothing will work via battery. I plugged it into my house with an extension cord and everything works though. I'm positive my battery has a charge, I checked the fuse at the battery terminal and even replaced it. All switches that I can find are on and the fuses in the panel box appear to be good. What can I be missing.
Apparently I had bought the wrong battery. I bought a marine startup battery instead of a deep cell. Problem is, when I called the old owner who I bought the popup from he brought his battery which is a deep cell and I'm still having no luck. I have no idea what I'm missing.

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Old 05-28-2013, 08:25 PM   #2
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is the battery hooked up backwards? follow the cable to double check the ground. if not this then maybe a bad converter?

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Old 05-28-2013, 08:30 PM   #3
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Allready checked the connections being backwards. And I had checked the ground and even sanded the metal down to make sure I had good contact. Are converters typically located behind the panel box where the fuses are? I have yet to explore this idea
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Old 05-28-2013, 09:00 PM   #4
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So everything worked when you plugged it in to your house. That means the converter is working just fine.

I'd say there are three possibilities:
1) There is a battery-disconnect switch which is off. Find it and turn it on.
2) There is a fuse in-line with the battery cable which is blown. It will look something like the picture below.
3) The battery wire is disconnected somewhere else.

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Old 05-28-2013, 09:03 PM   #5
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If you have 12V power when plugged into shorepower, the converter is working properly. Have you checked the battery should be around 12.75 V if fully charged. If it's charged, it still must be isolated by a battery disconnect or fuse or resetable circuit breaker.


Edit: Barry, you're quicker on the draw then me!

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Old 05-28-2013, 09:09 PM   #6
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A consensus is a good thing ;-)
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Old 05-28-2013, 09:11 PM   #7
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I would also check the reverse polarity fuses. It is possible that the cables were hooked up incorrectly at one time (could even have been the previous owner). Even 1 second will blow those fuses preventing the converter from connecting to the battery.

Also check for a dead battery. If the battery voltage is below 10 volts, the converter's safety circuits will prevent connection. Remove the battery and charge it using a dedicated charger with an equalizer circuit.


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