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Old 02-03-2020, 12:02 PM   #1
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What is this device?

Hello all,
I'm working on some rewiring and fixing a faulty battery disconnect. Can anybody tell me what the device and the attached picture is? Thanks so much.
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Old 02-03-2020, 12:07 PM   #2
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Welcome to the forum!

Is this in a trailer or motorized RV? Your 2008 Bambi 19' maybe, or the tow vehicle?

More details would help with the diagnosis IMO.

Good luck,

Peter
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Old 02-03-2020, 12:15 PM   #3
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That's the battery disconnect that is controlled by your use/store switch.--Frank
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Old 02-03-2020, 12:44 PM   #4
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That's the battery disconnect that is controlled by your use/store switch.--Frank
Yep. The term would be a "contactor".
The contactor is the relay to use when a circuit must support a heavy current load.

-Dennis
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Old 02-03-2020, 01:57 PM   #5
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Okay, thanks for the reply. So this is it's just a battery disconnect? In other words, This is not a battery isolation manager at all? I'm trying to figure out how to convert over to lithium batteries and was not sure if the trailer has a battery isolation manager. By the way, it's a 19 ft Bambi 2007. Thanks again.
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Old 02-03-2020, 02:00 PM   #6
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Originally Posted by mep67 View Post
Okay, thanks for the reply. So this is it's just a battery disconnect? In other words, This is not a battery isolation manager at all? I'm trying to figure out how to convert over to lithium batteries and was not sure if the trailer has a battery isolation manager. By the way, it's a 19 ft Bambi 2007. Thanks again.
It does not disconnect from ALL loads, which varies according to anecdotes. Definitely the propane detector not isolated, some say subwoofer, others say inverter stand by, etc.

You need to install a dedicated switch in between the batteries and this disconnect switch if you totally want to isolate the batteries. My T105 flooded 6V batteries have been in storage for 8 weeks in winter temps totally isolated, and still holding 12.74v when I check on them. Blue Seas is the switch of choice for most on this forum.
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Old 02-06-2020, 10:59 AM   #7
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I noticed the left hand red wire is loose with the nut not tightened. Hopefully this has been tightened or else you will have sparks and intermittent contact.
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Old 02-06-2020, 08:54 PM   #8
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I noticed the left hand red wire is loose with the nut not tightened. Hopefully this has been tightened or else you will have sparks and intermittent contact.
Good catch !
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Old 02-07-2020, 12:53 PM   #9
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My 2014 had battery store/use charging issues the pictured relay/contactor was replaced under warranty.
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Old 02-08-2020, 07:17 PM   #10
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Thanks for everyone's responses. I ended up taking the whole thing out because it wasn't working. This was actually the second malfunctioning one I had. Anyways, installed one of the bluesea switches and works great. Thanks for your help.
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Old 02-09-2020, 07:48 AM   #11
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The AS supplied contactor/relay is a fairly cheap and unique device because it does not consume power for the solenoid as it is momentary in both throws. It has a swing shaft and a spring to catch it in the open position, but it can get "stuck". Rap on it gently with a rubber mallot or vigorously shake it while attempting to energize it. Should work for another 100 cycles after that.
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Old 02-09-2020, 08:25 AM   #12
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In the USN we used to call that a "horizontal slam adjust". I use it often....
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Old 02-09-2020, 09:49 AM   #13
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Old 02-12-2020, 11:55 AM   #14
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Originally Posted by mep67 View Post
Hello all,
I'm working on some rewiring and fixing a faulty battery disconnect. Can anybody tell me what the device and the attached picture is? Thanks so much.
It will not be connected at all very soon if that nut falls right off
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Old 02-12-2020, 07:11 PM   #15
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Hello all,
I'm working on some rewiring and fixing a faulty battery disconnect. Can anybody tell me what the device and the attached picture is? Thanks so much.
You found it. The battery disconnect. Looks like the wire on the left is loose.
https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1
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