Hi all,
Very similar issue to what @Longbow2000 experienced:
Over a couple of months my SOC kept on falling. When it reached 60%, I called Deye. They helped me do a MAIN version update (Fig1). It then jumped back to 90% but over the last couple of months it has again kept on falling steadily (Fig2 - not very clean but SoC is dropping over time). I don't have solar panels, I am simply using it as a battery backup. The grid is supposed to charge the battery all the way to 100%?
The rest of the figures show all the relevant settings.
What could be causing this problem? I am worried that this might be damaging the capacity of my battery.
Also, I know a suggestion was to downgrade to an older version in the above-mentioned post. But that post is from early 2023. I would assume the latest firmware has resolved this bug?
Any help would be greatly appreciated.