Have you seen the video of the bike battery swap. https://youtu.be/yGwmPcClWrE https://youtu.be/yGwmPcClWrE I wonder if a good solution is a smaller fixed bat

Have you seen the video of the bike battery swap. https://youtu.be/yGwmPcClWrE https://youtu.be/yGwmPcClWrE I wonder if a good solution is a smaller fixed battery for lower cost then "range extenders" like this for the bike you can swap in for longer journeys or a topup on a busy day type thing.