When HN users recommended it
1 HN user recommended this in 2025, 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.
1 HN user recommended this in 2025, in one comment.
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.
There's a flurry of battery holders that accept 21700 cells, but the power delivery is just too weak IMHO.
From memory, the max output was about 20~30W for the bigger models [0]. For 2 cell types it gives 10W, so barely good enough to slowly charge a smartphone.
https://www.amazon.co.jp/PLCPDM/dp/B0DFPKXQZ1