@lukas thank you for the tip!

The moped was already presented on this forum in 2021:

New sport moped from brand Tromox from China
/forum/topic/56/new-sport-moped-from-brand-tromox-from-china/1

Info, price and pictures: /tromox-ukko-s/

@cbeta this forum is fairly new and primarily reaches consumer-type buyers of an electric scooter or light motorcycle. As it appears, your question requires advise from electric motorcycle specialists.

The German forum https://www.elektroroller-forum.de has many enthusiast electric scooter specialists who may be able to help you, however, the language is German.

There may be other forums with specialists. I found the following:

• https://www.electricmotorcycleforum.com/
• https://www.electricbike.com/forum/
• https://www.instructables.com/Build-Your-Own-ELECTRIC-MOTORCYCLE/ (workshop)

Another tip for advise is Battery University: https://batteryuniversity.com/