The Ooze Quad Vape Pen Battery packs a hearty 500mAh power level, 4 variable voltage settings, and universal 510 threading, making it ideal for use with most vaporizer cartridges. These unique batteries have a square shape which protects the vaporizer pen from rolling off of flat surfaces and damaging the cart. A USB charger is included with each vape pen, as well as a USB-C charge port in the bottom of each battery. The Ooze Quad Battery also has an automatic shut off feature which powers down the battery after 12 minutes of idle non-use to extend time between charges. Multiple colors available.