A vape tank is a component of a vaping device that holds e-liquid, which is vaporized to create inhalable vapor. It typically consists of a reservoir for the liquid, a coil that heats the liquid, and a mouthpiece for inhalation. Vape tanks come in various sizes and designs, allowing users to choose based on their preferences for capacity and style. Most vape tanks use a system called sub-ohm, which means the resistance of the coil is less than one ohm. This allows for greater vapor production and flavor intensity. Users can refill the tank with their choice of e-liquid, which can contain different flavors and nicotine levels, making vaping customizable to individual tastes.