Best portable cheap custom logo ecig battery variable voltage vape pen battery 510 battery 

Functions:

*5 rapid clicks of the button cycles the battery on or off

*2 rapid clicks when battery is on begins the preheat cycle that runs ~2v for 15 seconds to war

m up that thick oil. During the preheat cycle the LED ring around the button will change colors.

Preheat function can be stopped early by one click of the button.

* 3 rapid clicks cycles voltage from Green - 3.7V/ Blue - 3.9V/ Red - 4.1V

*Press and hold button for use.... battery has a built in timer of 8 seconds to prevent overheating