Cannabis vaporizers are a great way to consume discreetly and consistently. Vape cartridges contain concentrated cannabis oil that is heated by a battery and vaporized for inhalation. These products are very potent and are designed to be consumed in 2-3 second puffs. Cannabis vaporizers are a great way to consume discreetly and consistently. Vape cartridges contain concentrated cannabis oil that is heated by a battery and vaporized for inhalation. These products are very potent and are designed to be consumed in 2-3 second puffs.