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Old 05-25-2022, 01:05 PM   #1
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Victron SmartShunt wiring

Getting ready to install a Victron SmartShunt with Bluetooth enabled display. Their instructions refer to a single or series battery setup but make no mention that I can find referring to the normal RV parallel setup with dual batteries.

I assume the install is the same as a single battery where there is a single cable from the battery negative post to the shunt and then all other negative cables/wires connect to the other side of the shunt.

That leaves the question of exactly where does the cable running from the other battery negative connect? Is it connected, along with the shunt cable, directly to the second battery?
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Old 05-25-2022, 05:14 PM   #2
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most people will run a couple of jumpers between the 2 battery negative posts and the 2 battery positive posts. this makes the batteries paralleled. then one cable from one of the negative posts to the battery side of the shunt. all other negative cables go to the other side of the shunt. finally connect one positive cable to the positive terminal of the battery that does not have the negative shunt cable attached. this will balance current flow between the two batteries.
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Old 05-25-2022, 05:30 PM   #3
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Originally Posted by CHICKDOE View Post
most people will run a couple of jumpers between the 2 battery negative posts and the 2 battery positive posts. this makes the batteries paralleled. then one cable from one of the negative posts to the battery side of the shunt. all other negative cables go to the other side of the shunt. finally connect one positive cable to the positive terminal of the battery that does not have the negative shunt cable attached. this will balance current flow between the two batteries.
That’s pretty much the way I thought it should happen. Just confused because all reference material and instructions only show a single battery or a pair in series.
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Old 05-25-2022, 05:46 PM   #4
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I bought a Victron Smart Shunt too. Once I get all the cabling, I'm going to connect the other side of the shunt to a bus bar and then connect all the negative wires to the bus bar including the wire to the frame. Will use a bus bar on the positive side, too. Battery+ > disconnect switch > bus bar.
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Old 05-25-2022, 06:43 PM   #5
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I bought a Victron Smart Shunt too. Once I get all the cabling, I'm going to connect the other side of the shunt to a bus bar and then connect all the negative wires to the bus bar including the wire to the frame. Will use a bus bar on the positive side, too. Battery+ > disconnect switch > bus bar.
I would really like to install buss bars but there just isnít enough room.
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Old 05-25-2022, 06:54 PM   #6
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Consider all the batteries as one and it will work fine. I couldn't find a bus bar so I made one up using carriage bolts that I cut off and pounded the square shoulder of the bolt through a round hole drilled through 1/8" thick aluminum stock.
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Old 05-29-2022, 09:21 AM   #7
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Finally got the shunt installed but wish I had done it sooner. The only way to view the device is through a Bluetooth connection. Sounds good, but unless you are within 3-4 feet the Bluetooth will not connect. Unfortunately it’s outside the Amazon return window so I guess I’m stuck with it.

Worthless.
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Old 05-29-2022, 09:27 AM   #8
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i agree the bluetooth range is not unlimited but 3-4 feet sounds pretty low. i am able to read the shunt status from our large pickup truck cab while we are towing. the shunt itself is located inside the front compartment of out fifth wheel. i can also read it when i just drive by the trailer.

i have read that they sell some type of bluetooth dongle that you can plug into the shunt that increases the range. we don't have one, just the standard shunt.
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Old 05-29-2022, 10:37 AM   #9
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My installation has the shunt connected to the batteries under the stairs. When closed I can see where the location blocks Bluetooth signals.
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Old 05-29-2022, 11:52 AM   #10
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Finally got the shunt installed but wish I had done it sooner. The only way to view the device is through a Bluetooth connection. Sounds good, but unless you are within 3-4 feet the Bluetooth will not connect. Unfortunately itís outside the Amazon return window so I guess Iím stuck with it.

Worthless.
Victronís manual claims the open air distance for the SmartShuntís Bluetooth signal should be about 20 metres (65.6 ft) so youíd think inside the trailer it should reach at least 25 ft. Might want to contact Victron for advice. While itís not ďworthlessĒ it would be ďworth lessĒ with that range. The only remote thatíll work with it is a GX device which would be over US$200.
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Old 05-29-2022, 06:28 PM   #11
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Mine is mounted in the step box as well and I can pick it up from inside the house.
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Old 05-29-2022, 07:16 PM   #12
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Mine won’t even work from the MH bedroom 10 feet away. The app disconnects and reconnects whenever I walk past the battery box.
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Old 05-30-2022, 11:44 AM   #13
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Problem solved. I removed the unit and sold it. Installed in new owner’s 5th wheel with non-metal battery enclosure and it works great. It just doesn’t like being enclosed in a metal box.
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Old 05-30-2022, 03:18 PM   #14
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Thanks for the update, emm-dee. So the battery compartment under your steps is metal on all sides? That's good info to know what's interfering with the Bluetooth signal.

Canadian Eh, is your Sunseeker's battery compartment similarly all metal?

I haven't heard of any issues with installing it in the front storage area/pass through of towables but then I haven't been paying attention to this for long.
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Old 05-30-2022, 03:34 PM   #15
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Thanks for the update, emm-dee. So the battery compartment under your steps is metal on all sides? That's good info to know what's interfering with the Bluetooth signal.

Canadian Eh, is your Sunseeker's battery compartment similarly all metal?

I haven't heard of any issues with installing it in the front storage area/pass through of towables but then I haven't been paying attention to this for long.
Yes, all metal surrounds the batteries on all six sides.
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Old 05-31-2022, 06:49 AM   #16
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Quote:
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Problem solved. I removed the unit and sold it. Installed in new ownerís 5th wheel with non-metal battery enclosure and it works great. It just doesnít like being enclosed in a metal box.

Recommend the BMV-712 full version. I passed on the SmartShunt because of the known limited bluetooth distance. My 712 is in the metal battery box under the steps and I can read the stats off of my phone a long distance from outside my motorhome. Well worth the extra cost over the SmartShunt. Happy travels!
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