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Old 04-27-2016, 08:37 PM   #1
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House batteries

We have a 2006 Fleetwood Providence. We can not keep the batteries charged. They a 1 1/2 years old. We also had issues with them last summer to. Wondering if there is a fuse some where? We got the wiring diagram from fleetwood so we know they are hooked up OK. Hoping it is not the inverter.
Help!
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Old 04-27-2016, 08:49 PM   #2
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The only way to know for sure is with a voltmeter. You should have 13.5 to 14.5 volts in charge mode. After charging you should have about 12.75 volts. Some rv's have a battery level gauge and if you have one you should be reading a 100% during and after charging.
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Old 04-27-2016, 09:08 PM   #3
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What is meant by can't keep them charged? They don't charge at all (probably issue with charger) or they charge but it's not long till they are depleted (probably battery issue)?
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Old 04-28-2016, 06:45 AM   #4
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Originally Posted by vsheetz View Post
What is meant by can't keep them charged? They don't charge at all (probably issue with charger) or they charge but it's not long till they are depleted (probably battery issue)?
Yes they charge to max. But when we check in a few days they are dead.
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Old 04-28-2016, 06:53 AM   #5
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You can pull the batteries and take them to have them individually tested, but I would do a simple test first.

Charge the batteries as you do to get them to full charge, and then disconnect the main battery cable from the coach. Now they should be standing by themselves, and if the battery voltage drops like you've seen in the past, you know it's a battery problem.

If on the other hand the battery voltage stays high, then you know what is happening is something in the coach is draining them down.

You'll need a clamp on ampmeter to trouble shoot further, as you'll have to see how much current is being sucked out of them, and then start disconnecting things to see when the draw stops.

Suspicious that the converter is not maintaining the battery voltage, it should be able to keep up with any devices consuming current. When you say the batteries charge okay, is that with coach converter....or are you using a separate battery charger of some sort? Is the wiring diagram they gave you for your coach, a PDF file?
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Old 04-28-2016, 08:55 AM   #6
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Do you keep the water level covering the plates? How often do you check it?

You can check the health of your batteries by measuring the specific gravity of each cell. Simple test, inexpensive tool.

If you choose to disconnect the batteries, disconnect the ground (negative) side first. If you have a significant load you could cause a spark by disconnecting the positive first, while charging your batteries off gas which could catch fire with a spark.
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Old 04-28-2016, 09:04 AM   #7
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If you are storing your coach without turning off the 12V, disconnecting the batteries, and leaving the inverter on then then a few days before the batteries go low isn't too bad. There are too many residual loads (current draw) on your 12V system when you just shut off the engine and let it sit without plugging the system in.

So, inverter off, 12V interior switch off, batteries disconnected. If your batteries continue to discharge rapidly, then it is time for new batteries.
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Old 04-28-2016, 09:05 AM   #8
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How long do you charge them?

How fast do they die?

Get a volt meter and do a complete battery maintenance to be sure all connections ate good and water levels correct.

Search battery charging for much more information too.
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Old 04-28-2016, 10:45 AM   #9
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They will indeed discharge fairly quickly if the coach has no external power connected. Mine last about a week, even with everything seemingly turned off. The battery disconnect switch helps some, but doesn't make it indefinite.

Please explain a bit more about the circumstances of this loss of charge. If it happens while connected to shore power, something is very wrong. If not on shore power, maybe not so much wrong.
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Old 04-28-2016, 11:51 AM   #10
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It's possible your converter/inverter may have a problem charging the batteries or draining them quickly. I'd isolate the batteries for a week and check their voltage to see if batteries are holding a charge or not. Also check water levels (if wet cells). Lastly check for parasitic loads. Has someone added additional wires (not from the factory) for a modification they wanted?

Like everyone stated, there are several possibilities from bad batteries, poor maintenance or equipment failure. Best of luck.
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Old 05-14-2016, 07:43 PM   #11
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We finally took our RV to the shop. The inverter was bad. Had to put in a new one. Thanks for all the response That we got. You are all so helpful
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