We've been testing our batteries for 3+ years on an existing free-floating mobility fleet with our friends from Pony in France, they've been sustaining heat, cold, rain, snow, shocks, people throwing them in rivers, etc, and we've been able to improve them incrementally!
Today we're very proud of our product: it matches the performances of the best brands, it offers connectivity, and we plan to open-source the protocol and make it hackable, so you anyone can use it on any bike!
For now we've reverse-engineered and reimplemented major protocols (Bosch, Bafang, Brose, etc)
Happy to take any question you might have, and if you're interested, you can order a battery here :) https://gouach.com/products/infinite-battery-complete-kit?va...
(BTW: we've been trying to reach out to Louis Rossman to talk about what we do on his Right to Repair podcast, but couldn't reach him, perhaps he's here, or someone could ping him to know if he'd be interested? we love what he does and he was a source of inspiration for us!)
Oh: and of course, since this is HN, I have to mention that we coded our firmware in Rust!