After updating the firmware of my EP600 (parallel) yesterday to ARM 500457and DSP 500355, I noticed today that the SoC limit was no longer ignored when charging (only with AC-PV).
.
Charging stopped again today at SoC 80%
.
Looks like I can finally cross this off my wish list again.
. @BLUETTI Can you confirm that this “feature” is active again with this firmware?
Or was it just a coincidence today and it won’t work again tomorrow?
@BLUETTI, I must dig up this old thread again …
Now that the first days of the year are back with sufficient sunshine, I’m noticing the old problem again.
When charging via AC-PV, it doesn’t stop at SoC max, but charges to 100% every day (!) again. At first I thought it was due to the ‘winter mode’, which would make sense and was active until last week.
However, I have already switched off the ‘Winter Mode’ for days and also carried out a complete restart of the EP600.
SOC max is at 80%, but I’m still charging at 100%, although I’ve already tried to throttle the PV inverters so that I don’t ‘overcharge’ every day.
I don’t think it’s ideal that I charge to 100% every day for the next 8 to 9 months, is it?
Maybe I’m misunderstanding something. Shouldn’t the AC-PV system regulate the feed into the grid and not use the power from the battery?
I also use ‘Zero Export Control’ as I operate the system as a balcony power station, i.e. I am not allowed to feed in more than 800W.
Does this mean that SOC max is only taken into account when I feed into the grid with the battery, if I deactivate ‘Feed into Grid’, AC-PV is always charged to 100%?
I don’t want to feed the previously stored electricity into the grid, I want the battery to stop charging. My micro inverter will then regulate the excess PV anyway.
After confirmed with Mike, he explained:
AC-coupled solar power cannot be wasted, so the SOC high limit cannot be strictly controlled. Not wanting to feed excess power while also stopping charging at a certain SOC is contradictory. Home storage systems are connected to the electrical panel, but unlike balcony solar systems, the EP home storage system can feed more than 800W of power.
If you don’t want to charge to 100% when SOC is high, you can turn off the “Meter Switch” function in the app.
If you still have questions about this feature, you can contact Mike directly on WhatsApp for a more detailed discussion.
.
Switch deactivated around 13:00, battery SOC continues to rise … so activated again. The EP600 then switches off at around 16:00, battery SOC at 100% (SOC max at 80%)
Thanks for your efforts, but I’ll have to wait for a miracle (or FW update).
I’ve also tried ‘Utility Disconnect’ several times now, but I don’t notice any change at all.
I don’t even know if I have any ‘utilities’ that I can deactivate …
Hi Sigi @SigiKa
Please update the firmware to the latest version before proceeding. If it’s not already updated, you can contact Mike directly for remote assistance with the upgrade.
.
Everything up to date … but this could also be because I use two EP600s in ‘off-grid parallel’ mode. They have a different FW to the ‘single’ variant …
Hi Sigi,
Mike confirmed with me that the Utility Disconnect feature is only applicable to the EP600 standalone unit and does not apply to off-grid parallel setups.
