apctjb
Solar Enthusiast
- Joined
- Jun 16, 2020
- Messages
- 458
Trying to troubleshoot an issue and hoping that other Growatt/MPPT owners might be able to help.
Does anyone know what triggers the inverters to stop solar charging after reaching float voltage and what triggers them to resume charging?
Is charge termination and resumption based on voltage setpoints, elapsed time, SOC, or something else and are they user adjustable?
The issue I am observing is that once PV charging stops after float voltage is reached it can take a long time for charging to resume, sometimes more than a day. I have a 560AH LiFePO4 battery and loads are modest so voltage is not changing much. But rather than drawing energy from the battery it would be nice to have solar meeting the load, but that only happens when the inverters are in charging mode. Once they stop charging they draw energy from the battery regardless if solar is available.
Does anyone know what triggers the inverters to stop solar charging after reaching float voltage and what triggers them to resume charging?
Is charge termination and resumption based on voltage setpoints, elapsed time, SOC, or something else and are they user adjustable?
The issue I am observing is that once PV charging stops after float voltage is reached it can take a long time for charging to resume, sometimes more than a day. I have a 560AH LiFePO4 battery and loads are modest so voltage is not changing much. But rather than drawing energy from the battery it would be nice to have solar meeting the load, but that only happens when the inverters are in charging mode. Once they stop charging they draw energy from the battery regardless if solar is available.