The Professor Herb 510 variable voltage battery is a great product for oil or e-liquid.
The Professor Herb CBD Vape Pen Battery Kit has 350mAh capacity with variable voltage settings. Adjust your settings based on the type of e-liquid or oil you are vaping.
The Professor Herb CBD Vape Pen Batteryis designed to be slim, discreet, easy to use and affordable. This battery is one of the slimmest batteries on the market. Perfect for pre-filled 510 thread cartridges or fill in your own vape liquid.
Simply screw your cartridge onto the vaporizer battery and you are ready to begin vaping.