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02-09-2020, 07:20 AM
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#1
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4 Rivet Member
2019 28' Flying Cloud
Dripping Springs
, Texas
Join Date: Dec 2019
Posts: 328
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Let's install a Victron 712 _outside_ the AS
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02-09-2020, 07:33 AM
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#2
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Rivet Master
2012 25' FB International
Trent Woods
, North Carolina
Join Date: May 2013
Posts: 3,120
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So why do you want your battery monitor outside? Seems like any effort to put it inside would pay off if your cell phone does not work. When I had a Trimetric, back in the dark ages, I had my shunt in the battery box to minimize wiring issues, but it was not that hard to get the wires to the monitor into the front of the trailer from there.
Larry
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02-09-2020, 07:47 AM
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#3
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4 Rivet Member
2019 28' Flying Cloud
Dripping Springs
, Texas
Join Date: Dec 2019
Posts: 328
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I want to minimize running wires. My BT works well with it outside.
If my approach has problems I may end up pulling the data wire inside - time will tell!
Quote:
Originally Posted by lsbrodsky
So why do you want your battery monitor outside? Seems like any effort to put it inside would pay off if your cell phone does not work. When I had a Trimetric, back in the dark ages, I had my shunt in the battery box to minimize wiring issues, but it was not that hard to get the wires to the monitor into the front of the trailer from there.
Larry
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02-09-2020, 09:10 AM
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#4
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4 Rivet Member
2019 28' Flying Cloud
Dripping Springs
, Texas
Join Date: Dec 2019
Posts: 328
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Forgot to mention that I used a 3ft data cable from Amazon instead of the 30' supplied with the BMV
Link
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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02-09-2020, 09:56 AM
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#5
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Great install, but as noted... why?
Especially the monitor... more useful inside where it can be seen.
I made sure everything was inside, out of the weather.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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02-09-2020, 10:59 AM
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#6
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Rivet Master
2018 27' Globetrotter
Apollo Beach
, Florida
Join Date: Feb 2017
Posts: 1,401
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I think this is an excellent installation which I may copy. It all runs on Bluetooth so access is not an issue. A major reason I didn't install a BMV-712 is because I didn't want to cut into the existing wiring to install it inside the Airstream. With this installation, all the existing wiring stays the same with one added short cable between the battery and the shunt. It could be easily removed to sell the Airstream.
I like the option to easily return my Airstream to stock, with no traces of customization, so my Airstream retains its trade-in value. Dealers do not want customized Airstreams. I returned my 2017 FC25FB back to stock to trade it in.
__________________
2021 Northern-Lite 10-2 & F350 DRW PSD, 600W Solar/Victron/600A BattleBorn
146 nights 31,000 miles (first 10 months!)
Sold: 2018 GT27Q, 74 nights 12,777 miles
Sold: 2017 FC25FB, 316 nights 40,150 miles
Sold: 2013 Casita SD17 89 nights 16,200 miles
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02-09-2020, 11:41 AM
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#7
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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????????
What existing wiring would need to be cut?
I didn't have to cut any. Just run the monitor wire back to the shunt. (5ft)
The dongle is secured on the SS front window.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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02-09-2020, 11:51 AM
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#8
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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I would hardly think a BMV 712 Monitor installed inside or outside would be a customization that would reduce value at trade-in time. The opposite actually. Maybe not in dollars, but in desirability.
Neat job, Kalishnikov. Well done.
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02-10-2020, 11:43 AM
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#9
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2 Rivet Member
2017 23' International
Portland
, Oregon
Join Date: May 2017
Posts: 92
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Why? I've never seen any need to look at the 712 unit, let alone if it was outside, the Bluetooth works great. It's not that hard to get the shunt into the trailer too. Sorry, just my opinion.
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02-10-2020, 12:00 PM
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#10
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Rivet Master
2018 27' Globetrotter
Apollo Beach
, Florida
Join Date: Feb 2017
Posts: 1,401
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Quote:
Originally Posted by ROBERT CROSS
What existing wiring would need to be cut?
I didn't have to cut any. Just run the monitor wire back to the shunt. (5ft)
The dongle is secured on the SS front window.
Bob
🇺🇸
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I'd need to cut into the inverter wire for sure and maybe I could avoid cutting into the negative bus bar wire by adding another negative wire there. Then I'd need to run the temperature probe out to the batteries. This example puts everything in waterproof boxes on the tongue, requires no cutting of wires, and could be removed in minutes.
Add value to the Airstream? Hardly. One well regarded dealer on these boards said my 400W custom solar installation hurt the value of my Airstream because they could not warranty the installation. It had more value if I removed the solar and put it all back to stock. Customizing an Airstream adds value to me, but not to a dealer. They want then stock.
__________________
2021 Northern-Lite 10-2 & F350 DRW PSD, 600W Solar/Victron/600A BattleBorn
146 nights 31,000 miles (first 10 months!)
Sold: 2018 GT27Q, 74 nights 12,777 miles
Sold: 2017 FC25FB, 316 nights 40,150 miles
Sold: 2013 Casita SD17 89 nights 16,200 miles
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02-10-2020, 01:43 PM
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#11
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by AirMiles
I'd need to cut into the inverter wire for sure and maybe I could avoid cutting into the negative bus bar wire by adding another negative wire there. Then I'd need to run the temperature probe out to the batteries. This example puts everything in waterproof boxes on the tongue, requires no cutting of wires, and could be removed in minutes.
Add value to the Airstream? Hardly. One well regarded dealer on these boards said my 400W custom solar installation hurt the value of my Airstream because they could not warranty the installation. It had more value if I removed the solar and put it all back to stock. Customizing an Airstream adds value to me, but not to a dealer. They want then stock.
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I don't understand why you needed to cut all those wires just to install the one small wire that goes to the monitor...Inside where it is most useful.
As far as the shunt goes that is your decision, for myself it's inside, in a dry, open area where even condensation will evaporate.
TETO👍
Reminds me a bit of my wife's M/B...engineered well but poorly designed...almost impossible to get to anything to work on anything.
Oh well, you can always tell a German, but you can't tell 'em much.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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02-10-2020, 02:03 PM
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#12
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Rivet Master
2022 25' Flying Cloud
NCR
, Ontario
Join Date: Feb 2017
Posts: 3,106
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hhmm! why leave it outside . we moved the lion battery inside and so was the monitoring setup
running wire? it was very easy in our as.
we now have a full monitoring station above the fridge.
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02-10-2020, 02:25 PM
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#13
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Rivet Master
2017 23' Flying Cloud
Parker
, Colorado
Join Date: Oct 2016
Posts: 1,772
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Great idea and nice work... mine is hidden inside, but i never look at it.... so BT is fine....
__________________
Thanks,
Troutboy
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02-10-2020, 03:56 PM
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#14
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4 Rivet Member
2019 28' Flying Cloud
Dripping Springs
, Texas
Join Date: Dec 2019
Posts: 328
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Quote:
Originally Posted by waninae39
hhmm! why leave it outside . we moved the lion battery inside and so was the monitoring setup
running wire? it was very easy in our as.
we now have a full monitoring station above the fridge.
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Your picture illustrates why I _didn't_ want it inside. I'll monitor my system from the comfort of my bed
My goals:
- Minimize new wire runs
- Minimize interior panels (eg. BMV display)
- Allow unit to be serviced if necessary (both shunt & BMV are behind screw-down lids)
Yet I understand why some people want all their equipment inside, there are some clear advantages. But for me it's nice to have it all just working in the background.
BTW, if anyone is actually thinking of duplicating my approach, note that the clearance between the electrical box and the trailer frame is rather small. You'll need to use a philips screw bit and needle nose pliars to attach the face plate.
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02-23-2020, 10:23 AM
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#15
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2 Rivet Member
2018 22' Sport
Chino Hills
, California
Join Date: Dec 2017
Posts: 33
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Great approach
Kal, I just like the fact you wear Crocs haha. Inside or outside who cares the approach to YOUR problem you wanted to solve was genius and I might just copy it.
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03-06-2020, 07:07 AM
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#16
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2 Rivet Member
2017 23' Flying Cloud
Beavercreek
, Ohio
Join Date: Jun 2018
Posts: 69
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I just upgraded to Trojan T105s and used your idea to install a Victron 712 shunt in the battery box. However, I did run the monitor cable inside the coach and mounted the monitor with Velcro in the couch storage compartment for easy access if I need to get to it. I also used pieces of a 45 degree elbow to attach end caps to the shunt box. Drilled and sanded smooth battery cable entry holes in the end caps. I also wired the Zamp port the shunt. I use portable solar. Thanks for sharing your idea.
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03-07-2020, 06:19 AM
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#17
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4 Rivet Member
2019 28' Flying Cloud
Dripping Springs
, Texas
Join Date: Dec 2019
Posts: 328
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Quote:
Originally Posted by Josephine517
I just upgraded to Trojan T105s and used your idea to install a Victron 712 shunt in the battery box. However, I did run the monitor cable inside the coach and mounted the monitor with Velcro in the couch storage compartment for easy access if I need to get to it. I also used pieces of a 45 degree elbow to attach end caps to the shunt box. Drilled and sanded smooth battery cable entry holes in the end caps. I also wired the Zamp port the shunt. I use portable solar. Thanks for sharing your idea.
Attachment 362698
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Looks clean!
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07-15-2020, 06:01 PM
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#18
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Rivet Master
2019 22' Sport
Port Coquitlam
, British Columbia
Join Date: May 2020
Posts: 1,322
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Quote:
Originally Posted by ROBERT CROSS
I don't understand why you needed to cut all those wires just to install the one small wire that goes to the monitor...Inside where it is most useful.
As far as the shunt goes that is your decision, for myself it's inside, in a dry, open area where even condensation will evaporate.
TETO👍
Reminds me a bit of my wife's M/B...engineered well but poorly designed...almost impossible to get to anything to work on anything.
Oh well, you can always tell a German, but you can't tell 'em much.
Bob
🇺🇸
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Hi Bob,
How far away from the negative battery post were you able to install the shunt? Is it advantageous to have it really close to the battery? If one is to put the battery on the tongue and have the shunt inside the trailer tapped into the negative battery lead, would that still work? Do all the connections in and out of the battery have to go through the shunt? I haven't got the unit yet so this may be redundant. Just about to order it.
It looks like either way, the wires still need to be pulled inside at one point in this installation.
My plan is to install a Lithium battery on the tongue in-place of the Lead Acid one that is there. Then disconnect the on-board charger and install a new charger for shore hook ups. I would like to put the 712 inside but I am trying to minimize the wire pulling but would like to keep the battery outside.
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07-15-2020, 07:11 PM
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#19
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"Cloudsplitter"
2003 25' Classic
Houstatlantavegas
, Malebolgia
Join Date: Jun 2007
Posts: 20,000
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Quote:
Originally Posted by PB_NB
Hi Bob,
How far away from the negative battery post were you able to install the shunt? Is it advantageous to have it really close to the battery? If one is to put the battery on the tongue and have the shunt inside the trailer tapped into the negative battery lead, would that still work? Do all the connections in and out of the battery have to go through the shunt? I haven't got the unit yet so this may be redundant. Just about to order it.
It looks like either way, the wires still need to be pulled inside at one point in this installation.
My plan is to install a Lithium battery on the tongue in-place of the Lead Acid one that is there. Then disconnect the on-board charger and install a new charger for shore hook ups. I would like to put the 712 inside but I am trying to minimize the wire pulling but would like to keep the battery outside.
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Our Classic has two battery compartments on the front of the AS behind the LP tanks.
I mounted the shunt just below the negative buss bar, behind the converter. (photo taken at the first converter upgrade in '06.
Our monitor is about 4' from the buss bar. Not a problem as supplied connection wire is about 6' long. I bought a proud surface mount and attached it to the 'mouse fur' with velcro next to the street side front side window, the wifi dongle is also mounted on that window.
Bob
🇺🇸
__________________
I’m done with ‘adulting’…Let’s go find Bigfoot.
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07-15-2020, 07:19 PM
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#20
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Rivet Master
2019 22' Sport
Port Coquitlam
, British Columbia
Join Date: May 2020
Posts: 1,322
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Thanks, that makes the install more direct! Did you install Victron temp sensor as well?
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