I’m hoping sodium ion takes over the ebike market. It’s less energy dense then the very best lithium batteries, but most ebikes aren’t using the very best lithium batteries, anyway. They’re cheaper and alleviate the safety concerns (which are mostly overblown, anyway).

Backblaze.com gives stats on drive failures across their datacenters:

https://www.backblaze.com/blog/backblaze-drive-stats-for-q3-2024/

Seagate’s results stick out. Most of the drives with >2% failure rates are theirs. They even have one model over 11%.