The Firefly 2 External Charger allows you to directly charge the battery of the Firefly 2 in just 45 minutes. The Firefly external charger features an LED light which indicates charging status, and is compatible with the Firefly 2 charging cable (sold separately). For those who want to charge up faster, the Firefly 2 external charger streamlines the charging process to minimize down time. Just pop out the Firefly 2 lithium ion battery and rest it in the Firefly 2 external charger. This sleek black vape battery charger is perfect for those who own two Firefly vape batteries. You can charge one battery while you use the other so you never have to take a break from vaping with the Firefly 2.