I see that the new udate has arrived on V. 2.2.4. Incredible result max SOC is set to 94%. But the battery charges to 100%. What is happening with the update. My setting before the update was set to 100%. Thanks and all the best
Attachments:
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
If you are charging by schedule, what do you have for maxSoC for the schedule?
I did not set the mode scheduler. I am attaching a picture. Now I have changed the max SOC to 100%. It is still a mystery how it is that despite it being set to 94% and it is charging at 100%. Thanks and all the best
Attachments:
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
At your inverter panel go into Settings, Battery and see if you now have 2 settings for MaxSoC one is System MaxSoC the second is MaxSoC from grid - this appeared in a recent update on KH inverters so possibly also true of the H3 we believe that one limits the max charge soc from grid and the other from any charging source.
Only one of them is accessible via the app but if there you will see both in the Inverter Settings (or in Settings in the website if you have installer access).
Only one of them is accessible via the app but if there you will see both in the Inverter Settings (or in Settings in the website if you have installer access).
In the settings there is only max SOC and no maxSOC on grid is visible
Attachments:
Last edited by fumbo on Sun Mar 22, 2026 3:15 pm, edited 1 time in total.
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
Can you pick a SoC figure between 95% and 99% and look for battery charge on your graph.
This is so we can check to see if the battery took a charge, that was measured.
This is so we can check to see if the battery took a charge, that was measured.
Foxess is updated to V.2.2.5. Max SOC is set to 95% and it charged the battery to 100%. I am attaching the pictures.
Attachments:
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
I did an additional test, namely I discharged the battery to 85% and the max SOC setting was set to 90% and it charged the battery to 100% again.
Attachments:
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
Your PV keeps charging the battery to 100% SoC.
It is ignoring the max SoC, so a FW bug or intentional settings by Fox.
It is ignoring the max SoC, so a FW bug or intentional settings by Fox.
To who can I report a bug?
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
https://www.fox-ess.com/contact-us
Scroll down to "Global Service Contacts" and then select your region to call/email.
Check your home screen on the App, if you are in Self-use, I suspect this is causing the charging to occur.
You could set a work mode, with timer as "Feed-in" so it generates PV, but won't charge the battery unless it breaches your export limit.
Scroll down to "Global Service Contacts" and then select your region to call/email.
Check your home screen on the App, if you are in Self-use, I suspect this is causing the charging to occur.
You could set a work mode, with timer as "Feed-in" so it generates PV, but won't charge the battery unless it breaches your export limit.
Thank you and all the best.
Inverter H3-12.0-E 12000w / Battery ECS2900-H5 14400w / 26 Solar panel Trina Vertex S+ 435W NEG9R.28 11310W
S-love-nia
S-love-nia
In BasicParameters2 there is MaximumSoC-FromGrid and MaximumSoC settings but my owner account doesn't see them.MaterialBarracuda48 wrote: ↑Mon Mar 23, 2026 12:40 pm Your PV keeps charging the battery to 100% SoC.
It is ignoring the max SoC, so a FW bug or intentional settings by Fox.