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Cults3Dfree
18650 to 21700 adapter
by CyberCyclist
An adapter to make 18650 battery to 21700 battery thickness. I have 18650 batteries (KEEPOWER, THRUNITE) with a diameter of 18.6mm, and the inner diameter of the slot of the light (LUMINTOP B01) compatible with 21700 batteries was 21.6mm, so this model is designed accordingly. Depending on the inside diameter of the slot, there is a risk of the battery becoming stuck, so insert it while making sure it is not too tight the first time you use this. [Japanese] 18650バッテリーを21700バッテリーの太さにするためのアダプタです。 手持ちの18650バッテリー(KEEPOWER、THRUNITE)が直径18.6mm、手持ちの21700バッテリー対応ライト(LUMINTOP B01)のスロット内径が21.6mmだったため、それに合わせて設計しています。 スロットのサイズによってはバッテリーが抜けなくなる危険性があるため、最初に使う際にキツすぎないか確認しながら差し込んでください。
View on Cults3D Last seen June 15, 2026
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