Marstek Homebatteries - Complete Energy Storage Management Transform your home into a smart energy powerhouse! This Homey app brings full control of your energy storage system directly to your fingertips, enabling intelligent automation and optimal energy management like never before. Unlock Your …

Ok, thanks. It is what it is then..

for people who have 2 or more Marsteks: The energy tab crashed when adding more than 1 battery. This was not only with Marsteks batteries but also with batteries from other manufacturers. Today a new update for the homey app for iOS was published (9.6.3) [IMG_8547] This update fixes the problems…

Please keep the thread in English :wink: I personally dont have two at this moment. But there are multiple people using multiple batteries. Each requires their own EW11 device properly configured and each needs to be added individually to Homey. Then you can control them all individually. I did no…

Hi. I do indeed have two batteries that I can control independently with my Homey. They can be controlled manually or with flows. Right now, I’ve only tried some simple flows. But when I have more time this winter, I’ll definitely continue working on this. I can imagine that the first time you rea…

Good morning. I don’t have an EW11 yet. I need for each battery 1x Ew11? I’m really a newbie when it comes to Honey and EW11. Step plan is in this topic?

Hello Francois, I keep having connection issues. But I must admit that I didn’t have time the last couple of weeks to tinker with it. When I do get it working I will post here again.

Hello Daan, no problem, let me know when you found something.

Oke Guys, Im confused. My Marstek Venus V3 is on its way. Question 1. What do i need to setup to use this APP?

A modbus to wifi gateway, the EW11 is the one that was used to is and test the app with. See starting post for info and links to instructions how to wire it. There is now also a local api app available for Homey if you’re battery has support for it and it covers your needs.

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Wil_Ree October 31, 2025, 8:08am 197

Yes. That’s wat I did

2 EW11, and steps as in this topic. Also the tweaker link for cable and ew11 configuration (step 1 - 8)

Succes and let us know

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