| Remote controlled battery disconnect [message #368608] |
Sun, 30 January 2022 08:12  |
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RF_Burns
Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada
Karma: 3
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This thread from several years ago on a coach fire had morphed into a discussion on battery disconnects.
http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&th=40594
A discussion came up on a remote controlled battery disconnect so it could be activated by the door. Of course a battery disconnect is of no help when its mounted near the battery and the area is engulfed in fire. A latching relay (solenoid) is activated by a coil and remains ON or OFF until switched again, so no power is consumed in either state.
I found several of these disconnects on-line, but they are only rated for about 100 amps or so which is not enough to operate the starter. So you could install it so that starter current does not flow through it, maybe in-line with the main fusible link?
-Has anyone came up with a definitive way to wire such a disconnect so that starter current does not flow through it (that is the easy part).
-What about the alternator going to full voltage output if it were to lose the battery reference?
-Can it be setup to kill the engine as well?
-Would a second disconnect be required on the house battery? (I'm guessing that would be a good idea)
Anything else I am missing?
Here is a couple of these disconnects:
https://www.amazon.com/INTELLITEC-0100055000-Battery-Disconnect-Relay/dp/B072N8NYN2
https://www.summitracing.com/parts/aww-500834
Here is a video showing how a latching disconnect works:
https://www.youtube.com/watch?v=UGxJs5XaSWY
any input is welcome.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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| Re: Remote controlled battery disconnect [message #368610 is a reply to message #368608] |
Sun, 30 January 2022 09:46  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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If you put the disconnect in the negative side main cable, then high current COULD be carried by the thin body battery ground and to engine via woven straps. In that case the safety device would be the cause of the fire event with the thin battery wire burning.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Remote controlled battery disconnect [message #368614 is a reply to message #368608] |
Sun, 30 January 2022 15:05 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Tongue in cheek. I know, but you also have to study everything the PO may have changed from stock so no surprises. I’m always thankful mine is still the way it left Pontiac. The only mess was in the Onan zone but removing the unit and redoing all that has made it 100% reliable. I just think if everything is correct, then adding more stuff is not needed, at least that approach has worked for me with my 60s-70s GM vehicles.
John Lebetski
Woodstock, IL
77 Eleganza II
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| [GMCnet] Re: Remote controlled battery disconnect [message #368616 is a reply to message #368614] |
Sun, 30 January 2022 15:11 |
CJV
Messages: 49
Registered: December 2021
Karma: 1
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With my old vehicles, I'm usually tempted to leave them alone...as long as the improvement is well worth the time and trouble. Mounting 12" Camaro rotors and aluminum finned rear Buick drums on my 1983 Malibu wagon for example. It didn't cost much more than the replacement standard parts would have cost and certainly improved the braking.
CJ Vermeulen, Scribbler
----- Original Message -----
From: "John R. Lebetski"
To: "gmclist"
Sent: Sunday, January 30, 2022 3:05:06 PM
Subject: [GMCnet] Re: Remote controlled battery disconnect
Tongue in cheek. I know, but you also have to study everything the PO may have changed from stock so no surprises. I’m always thankful mine is
still the way it left Pontiac. The only mess was in the Onan zone but removing the unit and redoing all that has made it 100% reliable. I just
think if everything is correct, then adding more stuff is not needed, at least that approach has worked for me with my 60s-70s GM vehicles.
--
John Lebetski
Woodstock, IL
77 Eleganza II
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