A small carrying case for a 21700 battery, I use it to carry a spare around in a backpack.
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updated June 8, 2024

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Hi, does NOT fit for Fenix 21700 (5000 mAh). It is 5 mm shorter.

very beautiful and functional! i like the large thread pitch - quick to open and close. at the same time closes and locks tightly. strong, reliable, all dimensions are perfectly matched. i really love it!

layer height 0.12mm, PLA

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Ajustements parfaits

PLA Prusament Mystic Green

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I printed mine in an amazon special glow in the dark black/green sparkly PLA. I did some math and if you scale the parts to 86.48% on X and Y, and 91.53% on Z, it will work great for 18650s. Both needed no sanding for fitment but I had to clean them up cause my filament was a bit wet.

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This fits and functions extremely well, thanks for the design! I recently bought a powerbank that has swappable 21700 batteries, and now I can safely take a spare in my bag, perfect!

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Molicel P45B fits great with just a tiny amount of play in both axes. I love the thread action and the knurled body. Thanks for sharing!

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Very nice! The threads are a bit hard at first but with time it seems to be easier.

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Nice battery case 21700.

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