Victron bmv-712 settings

[bwag]

Surprisingly for me at least, it was a pretty easy install for the bmv-712, the shunt and I went ahead and plugged the VE Bluetooth dongle into my mppt. Just wanted to make sure my settings are correct on the bmv-712, I didn’t change any of the settings on the mppt.

I’m running two 224 ah agm batteries (US Battery) brand. I’ve got the overland solar 160 solar panel and the overland solar 100/15 mppt.

For the victron bmv-712, using the app the settings are as follows. Some I left as they were set and some I changed based on what I could find online.

Any setting suggestions/changes would be appreciated.

 

[Vic Harder]

This article has loads of good data - 7. All features and settings (victronenergy.com)

I think your charged voltage is a bit low. 13.5 or so is what I would use, and/or 0.3V lower than what your MPPT float setting is at. For reference, in my Hawk with dual 6V Rolls 225AH batteries I used:

14.7 Bulk
13.8 Float
13.5 Charged Voltage
2.5A tail current = 1% or so.

 

[bwag]

Thanks for the link Vic, I made the adjustment. I also plugged into shore power and either mixed up the cables along the way or possibly need to just do a reset on the bmv-712. When I plug in shore power the time remaining stays the same as when it’s not plugged in, I double checked and I’ve got the cables to the shunt in the correct format. Looking at the quick install guide, I’ve got it set up for mid point monitoring instead of monitoring a second battery as diagram (#12) depicts how my batteries are set up currently.

 

[Vic Harder]

Time remaining doesn't change? Watch the charging AMPs reading when plugged in and when not plugged in. If there is no change, either the charger isn't working or the shunt is not wired right. (assuming the batteries are not full, and that there is a load on the system)

 

[veryactivelife]

Turn off battery starts synchronized. If this is enabled then anytime there is an interruption of power to the BMV the SOC will go to 100%

 

[Vic Harder]

Agreed, i have that off as well

 

[bwag]

Hopefully this works trying to upload a picture of my connections.

 

[bwag]

Have to upload the pictures separately.

 

[bwag]

Other side

 

[Vic Harder]

From what I can see, that makes sense. Are you still having confusing readings from the BMV?

I found this manual online and it seems super helpful
victron energy BMV-712 Smart Battery Monitor Installation Guide - Manuals+

 

[bwag]

From what I can see, that makes sense. Are you still having confusing readings from the BMV?

I found this manual online and it seems super helpful
victron energy BMV-712 Smart Battery Monitor Installation Guide - Manuals+

I read through the manual a second time this morning don’t see where I made an error but I’m guessing somewhere I did. I reset the bmv-712 and maybe it corrected itself? I took some screenshots of my camper hooked up to shore power, then solar only and then solar/with my truck on and driving. The only other thing I was wondering is I used 4 gauge wire to connect the negative battery terminal to the battery only side of the shunt, would 2 gauge make a difference? Also wondering if a washer on the shunt and battery should separate the the connection to the terminals, I think I put the connection directly to the terminal and then the washers.

 

[bwag]

Hooked up to shore power

 

[bwag]

Solar only

 

[bwag]

Solar/truck driving

 

[bwag]

Okay gonna look like a bozo but after coming across the “shore power” thread in this sub forum, and watching the video Stan posted I double checked my kill switch, good to go, but all the circuit breakers going to the inverter were turned off. I’ve had this camper a year and a half and just never hook up to shore power since I fish/hunt in remote places, even camping at campgrounds with my family I’ve never had the need to use shore power. I’ll hook up to shore power tonight when I get home and confirm I’m good to go. Vic, again I appreciate your help.

 

[Vic Harder]

bwag, we all do bozo moves... good on you for admitting it. Not sure I would have caught that either!

Also, it can be very hard to see the effectiveness of your charging sources when the battery is full up. Drain it down some and try these tests again.

 

[bwag]

Seems all is good hooked up to shore power and charged overnight. I’ll start running my refer and see how it goes over a few weeks.

 

[Vic Harder]

Yeah!