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Uxcell 18650-Battery Protective Sleeve, Battery Tube Adapter, Holder Converter for 26650 LED Flashlight 4 Pcs - Walmart.com
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18650 Li-Ion to 3x C-cell Flashlight Adapter | eBay
Amazon.com: GFORTUN 2PCS 3 X 18650 Parallel Battery Holder Adapter Cylinder Battery Storage Case Black Plastic : Electronics
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18650 To 21700 Battery Adapter For Astrolux FT01 / FT02 / FT03 LED Flashlight D Sale - Banggood USA Mobile-arrival notice