Battery sense for Victron solar controllers

[dfelsent]

I have 3 mppt 75/15 and a bmv712 all Bluetooth. I have an inherent lack of trust in networked, Bluetooth or otherwise, devices. These have worked for me for the last year flawlessly. The bmv provides the voltage sense.
My only complaint is that from time to time my phone app insists on upgrading the firmware on one unit or another. That’s a risk.
But all in all I am VERY pleased with the devices. they seem to do exactly what they claim to do.