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Old 12-28-2015, 06:18 PM   #1
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No battery power

Alright, I am really stumped here. I will try and be as thorough as possible here. I am having battery power problems on my 2013 2715.
- I have no (absolulely none) power to the coach from my batteries. no light, no radio no water pump, I cant even see the levels of my black / gray tanks. but I can prime and start my generator, and my solar is charging and reading the level of the battery.
- when running my generator or plugged into shore power everything works.
- I started troubleshooting by ensuring both my batteries were fully charged.
- I have 12 VDC at the input lug of my battery disconnect switch with the switch in the off position. When I turn the switch to the on position volts drop to 1 VDC both in and out. So to eliminate the switch I disconnected it and I have 12 VDC coming from the battery, but as soon as I connect it directly to the lug going to the fuse box voltage drops to 1 VDC.

I am leaning in the direction that I have a ground in, or my inverter is not working properly.

Help PLEASE! I am supposed to go out dry camping Wednesday.

Jason
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Old 12-28-2015, 06:23 PM   #2
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weird how the batteries will start the genset but not power anything else... all wires tight at the 12v distribution panel?
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Old 12-28-2015, 06:28 PM   #3
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Yes, all wires are tight. It is not as weird as I originally thought about the genset, as I was tracing out wires I found that my start circuit for the genset is hard wired straight to the battery.
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Old 12-28-2015, 06:30 PM   #4
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Have you checked the converter. Should be Maxie Fuses into and out of to protect it. Converter takes120 volt and turns to 12volt. Inverter takes 12volt and makes 120volt. do you have a test meter to check with?
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Old 12-28-2015, 06:39 PM   #5
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Are you sure your generator starts from this same battery?
If it does, I would agree the battery is ok.

If it does not, then I would say you have a bad battery.
It sounds like you checked static voltage, which could read OK but as soon as you put any load on it, it goes to 1v.
Battery voltage has to be tested with a load. Static voltage will have you running in circles.

Do you have any way to put a stand alone battery charger (at least 10 amp) on it and see if things work?
It will eliminate guessing about a bad ground or poor connection that you seem to be leaning towards as it will be supplying the current directly from the battery posts.

Can you unhook the supply wires to your inverter to see if it is the culprit?

If you are certain the battery is OK under load, you have a HUGE draw somewhere.
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Old 12-28-2015, 07:15 PM   #6
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I did check the converter. with shore power on the converter is putting out 13.4 VDC just as it is supposed to.


Yes I am sure it is the same battery that starts the genset, its the only batteries I have on the unit.


I did disconnect the batteries and charged them separately, I have a high confidence factor that the batteries are good. I even took them out of parallel and tried to run the coach on each battery individually with no luck.


The frustrating part here is that the TH never moved. My son is home for Xmas and was staying in it. Everything was working. My wife in an attempt to save electricity unplugged it from shore power, and my son went to bed on battery, lights worked and even the heater, but the batteries died in the middle of the night, so after recharging the batteries, I have this problem.
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Old 12-28-2015, 08:23 PM   #7
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I would look underneath trailer near tongue for some mini-breakers and push small button to re-set....
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Old 12-28-2015, 08:29 PM   #8
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Interesting. I will go back under and look. I did not see anything like that before.

Thanks.


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Old 12-28-2015, 08:43 PM   #9
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I don't understand how an opened circuit breaker or blown fuse would drop good battery voltage to 1v when he hooks the battery up? (Via the cutoff switch or direct connection)
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Old 12-28-2015, 09:13 PM   #10
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Often common for owners reinstalling battery, to accidentally cross the wires and tripping resettable breaker.
it's almost always tucked up inside the trailer's A-frame.
It has a tiny black reset button.
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