Victron battery monitor weirdness.

[GILow]

Originally Posted by rslifkin

Make sure your temperature compensation setting is entered as negative. Otherwise it might be compensating the wrong direction and increasing (rather than decreasing) voltage at higher temperatures.

Yea, I went and checked straight away. It is negative. Weird hey?

[Colin Stone]

I have a 24v 1000Ah battery bank and I noticed that the BMV602 used to jump to 100% far too quickly due to the Tc at 4% I reduced it to minimum, 0.5% I realistic, and now much more realistic when I plotted charging amps vs time.

[sailcrazy]

following. I use a Victron 712 BM, and a Balmar Smartgage, and a direct-reading digital voltage meter to monitor our 6 Trojan T105+ house bank. The Smartgage never agrees with the Victron(always significantly lower in SOC), but the recent press on the Smartgage leads me to not put a lot of trust in its SOC reading. I know my batt charger is to small, and needs to be replaced, and we only have 320w of solar(Victron controller). This discussion is very enlightening.

[GILow]

Originally Posted by sailcrazy

following. I use a Victron 712 BM, and a Balmar Smartgage, and a direct-reading digital voltage meter to monitor our 6 Trojan T105+ house bank. The Smartgage never agrees with the Victron(always significantly lower in SOC), but the recent press on the Smartgage leads me to not put a lot of trust in its SOC reading. I know my batt charger is to small, and needs to be replaced, and we only have 320w of solar(Victron controller). This discussion is very enlightening.

Such a similar setup to ours. FWIW, with the changes made as above (14.2 volt as the charge threshold) I’m finding the Victron is now behaving very much as the old Votronic did. Of course they could BOTH be wrong, but at least they are now consistently so.