Battery spec calls for +/- mV when setting temperature comparisons. Which makes sense as charge voltage is increased or decreased based on temperature. But Victron mppt only allows "-" negative sign or no sign at all. Negative sign is used by default. Can Victron support clarify the importance of the negative or positive sign in this case? How firmware handles the mV offset value if the sign is not set?
Example: -18mV vs 18mV
But Victron mppt only allows "-" negative sign or no sign at all.
No sign and positive are the same thing. There is no other sign.
The negative sign is important because you want the battery Voltage to decrease with rising battery temperature in order to mitigate thermal runaway.
If a positive (unsigned) number were used then that would induce thermal runaway by increasing the battery Voltage the hotter it gets which in turn makes it hotter and so forth.
yes, I would expect that too - thank you! But for some reason I am not observing it at all. Posted this as a new question: https://community.victronenergy.com/questions/232571/should-multiplus-temp-compensate-in-absorption-mod.html
