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Old 03-03-2016, 12:48 PM   #1
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Battery disconnect

Hi all!

Had a quick question regarding the battery disconnect and battery drain rates. I parked the TT without power for a few days at the house and turned the battery disconnect on and verified that the lights didn't work inside once I did it. After about 3 days, the batteries were drained low. I only used the interior lights intermittently for about 15 minutes. Is this normal? I'm thinking that it is not and something is still draining the battery. Any likely culprits? It is my understanding that power is only sent to the jack (which i haven't used) outside of the battery disconnect when it is turned off.
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Old 03-03-2016, 01:03 PM   #2
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When the battery disconnect is turned on there is a connection between converter and battery. Battery disconnect off; Battery is totally disconnected from everything. (Unless something parallel is hooked up). One side of the battery disconnect should be directly on the battery pole (nothing else) and the other side of the battery disconnect you can connect whatever is there. When disconnected there should be no drain.
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Old 03-03-2016, 01:14 PM   #3
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My disconnect was factory installed. It is built into the front cap, next to the propane tanks. The manual says that the converter will still charge the batteries with the disconnect on, which it appears to be doing now (solid green light). There has got to be something still pulling with the disconnect on to drain two batteries so fast...
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Old 03-03-2016, 01:21 PM   #4
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You need a electrical schematic of your coach. You could also call customer service and ask about it.
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Old 03-03-2016, 01:35 PM   #5
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The battery disconnect should fully disconnect the battery. You should not be able to charge or discharge the battery.

With the Disconnect engage your battery should last months before it needs to be recharged.

I'd contact Jayco with your VIN number and ask for the electrical schematic.
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Old 03-03-2016, 01:41 PM   #6
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I'll give them a call and update if i figure anything out.
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Old 03-03-2016, 02:00 PM   #7
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If it is a factory disconnect switch, located in one of the holds, I suspect the only things not tied to the disconnect is the tongue jack and the electric brakes. People have had issues with the pull pin for the emergency brake getting disconnected (aka kids), once if I recall correctly someone pulled the pin and placed it in the TT, as they did not want to leave the red cord outside.
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Old 03-03-2016, 02:20 PM   #8
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I don't think that is normal. I have left the camper for a month and batter is reading nearly full with the disconnect switch.
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Old 03-03-2016, 07:24 PM   #9
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Quote:
Originally Posted by Wannabe View Post
My disconnect was factory installed. It is built into the front cap, next to the propane tanks. The manual says that the converter will still charge the batteries with the disconnect on, which it appears to be doing now (solid green light). There has got to be something still pulling with the disconnect on to drain two batteries so fast...
Can you see where the battery cable goes into the cap? Is there access to the disconnect switch terminals? Which side is the disconnect switch wired to? Positive or negative? Where is the main 30amp fuse (usually by the batteries)?

I know you said the trailer lights were off, what about the CO Alarm, radio light. How many wires are directly connected to each of the battery terminals? There should only be one cable on the Negative terminal and that should be going directly to the frame. The Positive terminal should have the wire for the main 12VDC connection for the TT. Also, it should have the Break-away switch and the tongue jack (fused) on it. If there is anything else, I would be tracing it out to see where it goes.

Don

Do you have a Volt/Ohm meter with the ability to measure Amps (usually 10 amp max)?
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Old 03-03-2016, 08:08 PM   #10
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Originally Posted by Jagiven View Post
The battery disconnect should fully disconnect the battery. You should not be able to charge or discharge the battery.

With the Disconnect engage your battery should last months before it needs to be recharged.

I'd contact Jayco with your VIN number and ask for the electrical schematic.
No... The converter keeps charging the batteries while the switch is off and shuts off the 12v accessories.
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