Hi!
I have a Victron BMV-712, the shunt is correctly wired as per its instructions. It worked fine when it was monitoring the drain on the house batteries from the loads, and the charge to the batteries from the Victron mppt 150/45.
My problems started when I added a Victron Orion tr 12/12-30. I set up it's charging profile using the data from the battery manufacturer (Photonic Universe).
Bulk/abs 14.20 Cond. 13.85 Float 13.50
The Orion would never stay in Bulk for more than a couple of minutes, regardless of how little battery percentage I had left. I was at 65% and still it went straight to float, or sometimes absorption for a few minutes then float.
Now I'm parked in one spot I've been plugged in to the mains most of the time. The other day the BMV showed 64% - sounds reasonable, I had been unplugged for several hours, it had been cloudy on and off, and I had used my laptop for gaming which does use a lot of power. I couldn't plug in the next day, so I ran down to 56% - but my heater still turned on. My heater doesn't work unless the battery is at 75% or higher!
So I'm wondering if the Orion is working correctly, but perhaps we often have more battery power than the BMV is showing?
Please note that the "starter battery" on the BMV is not the starter. It's simply connected to my battery bank.
Here are screenshots of everything on my app today as I drove. I had been unplugged for only 10 minutes or so.
I also include a drawing of my system. The positive and negative feeds from the mppt and the Orion originally went to the positive and negative bus bars respectively, but when trying to get the Orion to do something other than float, I took advice to move them to their current positions on the house batteries.
Thanks for any help or guidance you can give me, I'm completely lost now and way out of my sphere of knowledge!
