Amazon.com: 18650 to 21700 and 20700 Adaptor : Electronics
18650 to 20700 conversion sleeves-which end? | Vaping Forum - Planet of the Vapes
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