Array is 4x 395w panels wired in series full sun. Batteries are LiFePo4 x4.
No Grid or Loads
connected. Set up for OFF GRID, PV output measured at 130v in full sun.
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August 12, 2025 6:45 pm
3 Replies
August 12, 2025 7:15 pm
With the battery at 99-100% SoC there is no place to power to go, so PV array does not produce power.
Turn some loads on and you will see the PV production.
Brgds
K
August 12, 2025 7:18 pm
It all looks correct if there are no loads.
The battery is sufficiently full(the 99% may just be itself stabilizing after a charge). I see this fairly often on my system at least.
The PV is producing 130V it is just that none of it is being used hence no watts.
If you have some loads you should see the PV feeding the loads.
Something like this:
Would you be able to provide a screen shot that shows the BMS information as well?
August 12, 2025 7:45 pm
Thanks so much. I suspected that it was because the batteries were nearly full. I thought I might have a bad setting or something.
Just recently installed so I have a lot to learn about normal behaviour.
😀
