Hopefully this prompts some battery alliances to form. Rather than everyone going out & certifying their own packs, there should be a couple standard form factors, that ebike makers pick from & use.
A year ago, Honda Kawasaki, Suzuki, and Yamaha teamed up for a motorcyle-scale battery effort, under a new company name Gachaco[1]. Their first effort seems to be based on the Honda Mobile Power Pack battery. That's a partial example. But just making a real standard, that anyone can use, still seems far off here. But now seems essential to keeping costs under control.
[1] https://www.techradar.com/news/honda-kawasaki-suzuki-and-yam... https://news.ycombinator.com/item?id=30874219
This seems reasonable. UL is the de facto standard in a lot of industries for safety certification.
Many reputable ebikes manufacturers certify their bikes for sale in Europe, through the CE mark and related EN certifications, so hopefully the FDNY will accept that as a comparable certification indicating quality.