I have an inverter with 5Kw battery. The inverter has reported Battery Low Voltage for a month (didn’t know until I looked at the notification tab). This appears to mean that I haven’t been storing any excess generation to the battery :-(
The Battery is now at 3% below the battery reserve level of 4%. I have tried restarted the battery, updated the inverter to latest firmware but the battery is still not charging so the grid is getting all of my excess generation.
Any ideas of what might be wrong? Installer can’t see anything amiss when he looks at the system.
It sounds as if your battery and inverter are not communicating with one another.
Some questions:
What model battery do you have?
Do you have a hybrid inverter or an AC coupled inverter
Some batteries have a switch between the inverter and battery. If you have one, check that it hasn’t tripped.
Can you also upload a screenshot of your power graph so that we can see what is happening during the day.
I have had two of these switches replaced by my installer in the last year.
If this has worked, you should begin to see a blue shaded area for the battery appearing in your power graph. You should also see more lights appearing on the battery.
If this works, keep an eye on the switch. If it continues to turn off, contact your installer.
One time that my switch tripped repeatedly, I noticed that the switch was hot. I managed to keep the switch on by reducing the charge power down from the default of 3000 W. This kept my battery working at a lower charge rate until the installer could replace the switch.
At this time, you may have to wait until tomorrow for your solar generation to start to charge the battery.
If you have an export MPAN, at least you will be paid for any excess solar that has been exported.
