If you use 18650 vape batteries, you need to get yourself a decent external vape battery charger. If you plan on vaping for the long haul, an external vape battery charger is an essential piece of kit.
Vape battery chargers will charge your 18650 batteries faster than wall-charging your vape mod. They’re also safer too. You really shouldn’t charge 18650 vape mods via USB – it can be very dangerous. If you want to be safe, get yourself a proper vape battery charger like the ones listed below – they’re all awesome!