I'm building out a new solar system in a box for in camp power (and I am pretty new at this - previous setup was an AGM battery, 100W panel, PWM controller)
I have 2p 100W panels feeding into a Victron 100/20 MPPT, then to a Renogy 100AH smart LiFePO4. Victron battery monitor in the circuit as well.
The oddness I am seeing is that the battery is reading 17.4V at the terminals on multimeter, even when totally disconnected from all circuitry. When everything is hooked up the battery monitor claims 13.5v. I have power plugs on the box which also read 17V on the multimeter.
I am seeing posts around here where folks are seeing similar high voltages on the battery but that's coming with overvoltage alarms, which I am not getting. Am I just missing some basic "you can't just slap a multimeter on that battery" knowledge? Or is this a "don't use Victron devices with a Renogy battery, newbie" moment?
I'm looking at the boost voltage advice and might tinker with that a bit, but generally don't get why that voltage difference is happening. Any thoughts would be great.
Thanks!
I have 2p 100W panels feeding into a Victron 100/20 MPPT, then to a Renogy 100AH smart LiFePO4. Victron battery monitor in the circuit as well.
The oddness I am seeing is that the battery is reading 17.4V at the terminals on multimeter, even when totally disconnected from all circuitry. When everything is hooked up the battery monitor claims 13.5v. I have power plugs on the box which also read 17V on the multimeter.
I am seeing posts around here where folks are seeing similar high voltages on the battery but that's coming with overvoltage alarms, which I am not getting. Am I just missing some basic "you can't just slap a multimeter on that battery" knowledge? Or is this a "don't use Victron devices with a Renogy battery, newbie" moment?
I'm looking at the boost voltage advice and might tinker with that a bit, but generally don't get why that voltage difference is happening. Any thoughts would be great.
Thanks!
