Good Sam Club Open Roads Forum: No 12 V juice--battery or converter?
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 > No 12 V juice--battery or converter?

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coolmom42

Middle Tennessee

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Posted: 09/06/20 04:46pm Link  |  Quote  |  Print  |  Notify Moderator

midnightsadie wrote:

find some body close to you that has a rv get them to walk you threw things. better than throwing money at it. then finding out it was a simple fix.


I'm fairly proficient at most things RV. This is my first RV with a built-in generator and an unknown battery.


Single empty-nester in Middle TN, sometimes with a friend or grandchild on board

coolmom42

Middle Tennessee

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Posted: 09/06/20 05:04pm Link  |  Quote  |  Print  |  Notify Moderator

MrWizard wrote:

Sounds like the converter is working
Try this test
With the generator on and you have 12v power
Flip the the battery disconnect switch several times
The latching relay might be stuck
Or if the batteries are discharged the latching disconnect relay might not have enough power to engage
Check to see if the batteries are getting charge voltage

Somebody will post where the relays are located
And any fuses

Generator can be wired chassis or house
The Onan in my RV is wired to the engine battery


Thanks!

More questions:

OK does the battery isolation switch totally disconnect the battery from the RV? For some reason, I thought the disconnect was between the house battery and the chassis battery, so you couldn't run down the chassis battery and be stuck. I googled around and found differing info. Can you clarify this for me?

MrWizard

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Posted: 09/07/20 02:49pm Link  |  Quote  |  Print  |  Notify Moderator

The disconnect
Is for disconnecting the house from the batteries when the RV is stored and Not being used and not on Shore power to maintain the batteries
The connection between chassis and house is normally open and connects automatically only when the engine is running,
From your description the house/RV is completely disconnected from the batteries, they are not being charged, you need to put the disconnect switch back in use mode, it should not drain the engine/chassis batteries
The generator or a large inverter are things that would be connected directly to the batteries and not go thru the battery disconnect relay


Radiate The Happy
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coolmom42

Middle Tennessee

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Posted: 09/08/20 10:00am Link  |  Quote  |  Print  |  Notify Moderator

MrWizard wrote:

The disconnect
Is for disconnecting the house from the batteries when the RV is stored and Not being used and not on Shore power to maintain the batteries
The connection between chassis and house is normally open and connects automatically only when the engine is running,
From your description the house/RV is completely disconnected from the batteries, they are not being charged, you need to put the disconnect switch back in use mode, it should not drain the engine/chassis batteries
The generator or a large inverter are things that would be connected directly to the batteries and not go thru the battery disconnect relay



You were correct. The switch was turned to the OFF position! DUH.

I was previously a partner in a TT that did not have a disconnect switch.

MrWizard

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Posted: 09/08/20 10:35am Link  |  Quote  |  Print  |  Notify Moderator

Problem solved ... Learning experience acquired

enblethen

Moses Lake, WA

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Posted: 09/08/20 06:08pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the update!


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coolmom42

Middle Tennessee

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Posted: 09/08/20 10:13pm Link  |  Quote  |  Print  |  Notify Moderator

MrWizard wrote:

Problem solved ... Learning experience acquired


Definitely. It doesn't help that the switch labelling is in microscopic letters in a poorly lit location. But now I know which position is for disconnect.

jaycocamprs

Ringgold Georgia

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Posted: 09/09/20 06:57pm Link  |  Quote  |  Print  |  Notify Moderator

But be aware that there are likely still a few things (like the propane detector) that draw electricity even with the disconnect switch "OFF". So for long term storage, disconnect the negative battery cable.


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bikendan

Camano Island, Wash.

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Posted: 09/10/20 03:03am Link  |  Quote  |  Print  |  Notify Moderator

jaycocamprs wrote:

But be aware that there are likely still a few things (like the propane detector) that draw electricity even with the disconnect switch "OFF". So for long term storage, disconnect the negative battery cable.


Or install a battery disconnect switch right on the battery. I did and my dual batteries were still nearly fully charged after 4 months of storage.


Dan- Firefighter, Retired">, Shawn- Musician/Entrepreneur">, Zoe- Faithful Golden Retriever(RIP">), 2014 Ford F150 3.5 EcoboostMax Tow pkg, 2016 PrimeTime TracerAIR 255 w/4pt Equalizer and 5 Mtn. bikes and 2 Road bikes


mchero

Henniker, NH

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Posted: 09/10/20 07:44am Link  |  Quote  |  Print  |  Notify Moderator

bikendan wrote:

jaycocamprs wrote:

But be aware that there are likely still a few things (like the propane detector) that draw electricity even with the disconnect switch "OFF". So for long term storage, disconnect the negative battery cable.


Or install a battery disconnect switch right on the battery. I did and my dual batteries were still nearly fully charged after 4 months of storage.


Good idea!


Robert McHenry
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