Battery Converter Adapter Tube Sleeve for a 18650 to 20700 | eBay
Amazon.com: LampVPath 3PCS 18650 Battery Protective Sleeve, 18650 Battery Spacer, 18650 Battery Holder Converter for 18650 Battery (Batteries are not included) - 3 Pack : Electronics
Amazon.com: 18650 to 21700 and 20700 Adaptor Battery Storage Container(18650 to 21-700 and 20-700 Adaptor) : Musical Instruments
Aces Of Vape - New!! The iJoy Captain PD270 *234 max wattage *Dual 20700 batteries included *18650 battery adapter sleeve included *Pass through charging *0.05-3.0ohm resistance range If you want power and