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Amazon.com: LampVPath 6PCS 18650 Battery Protective Sleeve, 18650 Battery Spacer, 18650 Battery Holder Converter for 18650 Battery (Batteries are not included) - 6 Pack : Electronics
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STL file 18650 battery adapter - flexible converter - replaces 2xC batteries・Model to download and 3D print・Cults
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DIY Dummy 18650 Magnetic Battery Charger Adapter - A solution to charging 26800's and other large cells without having to buy a new charger (details inside) : r/flashlight
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