Hello everybody, i'm Oliver from the Open Source Ecology Germany (OSEG) group and i'm no expert for redox flow batteries but i maintain another energy storage open hardware project named "ZAC+", that tries to utilize a zinc-air fuelcell and therefore at least has some "flow"-aspects too (e.g. typical problems with leakage 
).
Energy storage is to important to leave it alone in the hands of the monopolists and therefore i appreciate any OSH approach to research a kind of storage technology, no matter which one because all have their individual properties, advantages and use cases and it would be nice to cover more of them by open source hardware projects.
Therefore it makes a lot of sense to strengthen and extend our networks and secondly, the above mentioned different kinds of technology are not only useful in terms of pure technology, but instead aspects like replicateability can also have a strong value in our context, because if an experimental platform is easily accessible you can gain more people working with it and that means more menpower in running experimental test series. Which can lead at the end of the day to some groundbreaking innovations (fingers crossed). 
I am new here and still trying to find my way into the workflow but so far i got nice support from Daniel and Kirk, so i am confident and looking forward for what comes next.
Here is a link to our project page at the OSEG wiki at https://wiki.opensourceecology.de/Zn/O-Brennstoffzelle (with recent activities in an approach of citizen-science workshops, eg. at https://wiki.opensourceecology.de/ZACplus_Citizen-Science_workshop_vom_21.03.2025_und_22.03.2025) and some other impressions can be seen at our YT-channel https://www.youtube.com/@ZACplusCitizen-SciencePr-un9nv/videos .
Best regards, Oliver