My BMV-712 display 13,26V but voltmeters (2 different) display 13,51.
How do i get the correct value of BMW?
I have this same issue. Mine started a bit differently though, in that the voltage was shown fluctuating all over the place and giving errors. So I started troubleshooting.
It's the included fuse holder. It's garbage. I have three of them. One with the temperature monitor, and two that came with the Victron 712. Use your voltmeter on the end of the positive lead that attaches to the 712. There's significant voltage drop in two of mine, and one that's completely faulty.
I bought this thought Amazon. I thought, no biggie, these things happen. I'll email Victron to let them know ... turns out that's not possible, as they have no tech support contact.
Then this morning I had a significant issue with the MPPT 75/15, where it ran at an unbelievable 15.7 volts after being connected, despite 14.4v being set as the Absorption voltage. And there's no way to limit the max voltage output. Thank god I've isolated this bank from my RV electrical system or I'd have some vehicle issues from that voltage spike. The voltage spike killed some of my "12v" equipment.
Needless to say, after all of these issues, I'll never buy Victron again, and I have some free equipment for anyone that wants this junk.
If Victron had a means of contact, that wasn't "contact your dealer" (I'm an Engineer, what help will Amazon really be giving me in this?) I'd have been able to feel okay. But no means of contact? That's a sign of not caring.
Thanks for your reply. I will measure the red 12v and see if the fuse is incorrect.
I also use the Victron regulator (100/30), but have not had problems, but I would like to have a simple device that counteracts power spikes - I have a booster (Votronic 25A), which gives power spikes sometimes, when it closes charging from the car alternator
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