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I’ve now connected my Marstek to the Modbus, and it’s working perfectly. Has anyone already created any flows that they could share here for inspiration?

I had the same problem… I was lost regarding the various Cards available within the Homey app “Marstek-Energy-Storage”. Attempting to figure out how to use it, I compared the Cards with the API documentation (available here ): The API mentions 4 modes: Auto, AI, Manual, and Passive. The Marstek…

Thanks for the great analysis, you are correct in your conclussions. The Operation mode is a read only state based on the devices state. Those values are listed on the modbus documentation and I did not manage to trigger all of them myself. But most are rather clear (there is actually another one: …

I finally got a bit of time to try flows… And indeed, some cards are not working. But to be honest, I didn’t get all the details of what you mentioned :slight_smile: To switch to force “charging” with a “SOC Target of 98%” during the night (slowly), I wanted to use this: [image] The two first ca…

Correct, so for all force modes (force charge with a certain w speed or to the selected so) you need to set Work mode to force mode first. The error you should get as a result of trying to use a force card without that workmode should state this. Once it is in force mode you can use the cards to se…

MANY THX !!! It’s now very clear. I will see tomorrow the outcome, but my flow seems to work just fine now [image] Next step, calculate the SOC Target based on the forecast from Solarcast :smiley: But this version is good enough for winter time…

The only “problem” remaining is that the batteries are charging full speed (2500W) although I tried to force charge power to 800W. But you mention that it’s possible, isn’t : “set force charge or force discharge with the speed selected in setting that matches”…

Yes, for me that works. So it should for you but only when you use the correct force mode: force charge. It is not an override for the other modes (grid 0, Ai etc). Not sure if force soc respects that value.

is the test version of this app still available? I’m confused because i have less options then letroye when looking at the flows. Furthermore, I have a alarm, but i cannot figure out what it is. [image] I’m using a waveshare eth to rs485 and i see data in Homey. i’m using the A and B and Ground …

1.1.2 is the latest one and current the live version (so no newer test version) Are you on that version?

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vletroye December 5, 2025, 8:08pm 212

MANY THX !!! It’s now very clear.

I will see tomorrow the outcome, but my flow seems to work just fine now

Next step, calculate the SOC Target based on the forecast from Solarcast

But this version is good enough for winter time…

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