When HN users recommended it
1 HN user recommended this in 2017, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
Canwelum Protected Lithium Battery Rechargeable
Amazon's catalog no longer lists this product (checked 2026-11-02). The name comes from the link HN users posted.
> However, the 18650s have no internal electronics to prevent any charging mishaps.
I believe you can get ones which do have this - e.g. https://www.amazon.co.uk/Canwelum-Protected-Lithium-Battery-...
"Reliable 18650 Battery: Integrated with protective board, avoiding overcharge and discharge, protecting your led torches or head torches. "