I’m very happy to use PreferRenewableEnergy Sustain mode on my sailboat. Not to save on Grid cost but to be able to keep the battery more or less idle att ~70% (13.2V) when the boat is not in use.
BUT: The logic for interupting sustain mode is the exact oposite of my needs:
When I’m actually using the boat, I want it to be as fully charged as possible whenever I have shorepower. So when I choose to “Charge to 100%”, I want it to stay that way until I restart the Multiplus or otherwise reengage PreferRenewableEnergy.
On the other hand - if an automatic full charge is triggered, I’d like the batteries to go back down to 13.2V after the absorption cycle is finnished.
So: This could be a feature request for a setting in the VE Configure app for sustain voltage to choose interrupt sequence:
- After manual full charge: Either “Revert to sustain mode” or “Remain at float”
- After automatic full charge: Either “Revert to sustain mode” or “Remain at float”
OR: Is it possible to do something abut this in NodeRed already??
The “PreferRenewableEnergy” in the VE-bus system control node can be set to 1 or 0 from NR - but setting it to 0 only triggers the one-time full charge. Is there a way to deactivate the entire “Sustain Mode” voltage limiting from Node-RED? Maybe from the Custom Control node?