I do a lot of RV installs and during the winter I always get a few calls with “Battery Monitor says 50% (or something well within a safe range) and everything turned off” . It turns out we had a cold night, batteries went into low temp charge protect. I try and educate my customers on the fact that the smart shunt can’t tell the difference between a cold battery and a full battery.
We also install almost exclusively heated batteries, so telling the chargers to no to charge if below 2C or something won’t let the batteries heat themselves.
I set the Charged voltage to .1v below my absorption voltage. So 14.4 Absorb would get a 14.3v set for Charged Voltage. I’m experimenting with my own system and setting it .1v above, so 14.5v with 14.4v absorb. Issue here is it only gets to 99.8% , which for me, I can deal with… I know some of my customers will loose their mind if it never hits 100%
Has anyone figured out a good mix of settings or hardware to alleviate this? Am I missing something obvious?
In writing this I am thinking of maybe setting the charge efficiency to 100% and charged voltage a tick above absorb. I kind of wish the Venus OS UI would round up to 100% like the Victron connect does.
