Wow! Where did you find that? I didn’t think lithium ion batteries required those kinds of bags/containers for storage. I do know that LiPo batteries do though. That’s how I store all my LiPo batteries for my RC’s, in LiPo designated bags.
I am curious though now and will have to look into...
Checkout the Deity Highside 35 handlebars. They come in a 50mm and 80mm rise. They come in 800mm width only but can be cut down. I was using the OneUp Carbon bars but they only came in a 35mm rise and needed higher rise. So far, I’ve been pretty happy. Good luck with your search...
I have the T2 Classic and I think it would be another good option to look at. I have yet to get an e-bike of my own, but I’ve transported my friends’ Levos without any issues at all. Just more food for thought.