eBike technology explained

Hey everyone!

I've been diving deeper into the tech behind our eBikes lately, especially with all the talk about different motor types and battery chemistries. For those of us who love to tinker and maybe even upgrade components, understanding the "why" behind the "what" is super helpful. What's one piece of eBike technology you found surprisingly complex or fascinating when you first started digging into it, and how did you finally wrap your head around it? I'm particularly interested in how things like torque sensors versus cadence sensors impact our DIY builds for trail riding!