Disposable Vape Units or disposable e-cigs are by far the simplest way to start vaping. A vape pen is a tool that’s just like an e-cigarette but much smaller in size. It comes packing though! They act as a battery that heats a cartridge to produce vapor. A disposable vape pen consists of an internal battery, a pre-filled tank, and a coil. They cannot be recharged or refilled. So the point is to throw it away after use. Therefore the…