21700 to 18650 battery adapter sleeve -- options? - #22 by BOO5TED - Rechargeable Batteries - BudgetLightForum.com
1 Piece Li-Ion Battery Charger Adapter DC 4.2V 1.2A For 18650 Rechargeable Lithium Battery Charger US Plug - AliExpress
2A Single Lithium Ion Removable Battery Charger For 18650, 21700 etc. – The Saber Armory
Amazon.com: MINCHEN 6pcs 18650 Big Plastic Sleeves, Big Plastic Tube Holder for 18650 Battery, Battery Plastic Holder Converter for 18650 Battery to 26650 : Electronics
USE-18650-3500PCBJST US Electronics Inc. | Battery Products | DigiKey Marketplace
Molicel Battery for Tinymight vaporizer | Discreet Shipping | Planet of the Vapes - Planet Of The Vapes
OrcaTorch OT121 Charger for 18650 Battery
Li-Ion Charger (2 Slot) + 2 x 18650 3.6v Panasonic 3400 mAh li-ion w/ PCB | Best Buy Canada
uxcell AAA Battery 3x1.5V Storage Adapter Case,18650 Battery Holder Converter for AAA LED Flashlight 8 Set : Amazon.ca: Tools & Home Improvement
Amazon.com: MINCHEN 6pcs 18650 Big Plastic Sleeves, Big Plastic Tube Holder for 18650 Battery, Battery Plastic Holder Converter for 18650 Battery to 26650 : Electronics