eBike technology explained

Hey everyone!

Been thinking a lot lately about how far eBike tech has come, and honestly, it's pretty mind-blowing. From the different motor types (hub vs. mid-drive) to battery chemistry and display features, there's so much under the hood. I'm riding a mid-drive commuter myself and love how seamlessly the assist kicks in, especially on those uphill stretches.

What's one piece of eBike technology that really impresses you, or something you'd love to understand better? Maybe how torque sensors work, or the differences in controller programming? Let's geek out a bit!