question

What equipment are you connecting to to get these readings? What sort of battery? Are these readings whilst charging or not?

It's an RV installation with 2 Battle Born 100 batteries. I'm not sitting next to it now, but could. This is not the first time this has happened.

BTW, thank you very much for trying to answer this question. fred

When you say "Victron Connect" is saying 0%, what device is Victron Connect connected to? smartshunt? BMV?

If you are charging, and your battery is at 13.2V (3.3V/cell), this may be a low stage of charge.

Victron Connect. Maybe my fundamental assumption is wrong. I understood that a battery with anything over 12 was fully charged. Maybe that's wrong?

I believe its BMV, but could check when I"m at the RV. Right now, its sitting in storage with all electricity turned off (except things like electric device clocks ) and is being kept charged by the solar panels. If the 0% is right, then something is drawing the batteries down despite the solar panels. I think : )

>12V is not the criteria.

Batteries require specific charging parameters to attain full charge. A Battleborn typically needs to be charged to 14.2-14.4V and held there briefly. If unloaded, it will settle to about 13.8V resting voltage. This can vary.

I can't say the BMV should be reporting 0%, but the battleborns at 13.2V suggests there may be more loads than you anticipate, or you may not be getting the expected charge.

Or both.

Thanks very much. I just talked to the Victron installer and he said I need to do a syncronize on the Victron Ap.

Once again, thank you for your time and help.

fred

Hopefully the installer was more specific and that he indicated you should sync it after you know you've charged it to full.

The installer is wrong/avoiding the issue.

Victron kit, properly configured, synchronises automatically when 100% SOC is reached. It then calculates SOC depending on load measured.