this post was submitted on 30 Jan 2025
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Actually, ebikes need energy density the most. They tend to not have fast public charging. A lighter ebike has huge advantages, if only for maneuvering a couple of stairs or over a log, but also in suspension and handling + a huge difference in range/acceleration.
For an EV, you don't need "race car" performance, and heavy chemistries are ok. Bike performance just gets a huge boost from relatively minor cost to improve weight/range and performance.
Sodium Ion batteries would be a better weight compromise than going to shitty old lead batteries. The new sodium batteries have almost no downsides but aren't quite as energy dense as lithium types. So they might be great in a large vehicle that's already going to be heavy, not so much in a smaller car. Saving the lithium stuff for smaller things is best (phones, laptops, etc)