The battery portion of a vaping device supplies power to the atomiser, which heats e-liquid and creates vapour. A typical entry-level kit uses a built-in (AKA “internal”) battery, meaning it’s a self-contained unit, which can be charged via USB-C or Micro-USB.
Most entry-level kits do not have additional functionality within the battery unit and are operated using a single button, which turns the device on/off and is held to vape. Some basic devices have no buttons at all and use a pressure activated switch to power the atomizer when you take a puff.
Advanced batteries are typically called Mods. Mods include features such as variable power, temperature control and other emerging technologies. Mods tend to be larger than basic devices, allowing for larger capacity batteries and smart chipsets.
Some mods use external batteries. This allows the user to swap out the battery on demand for a freshly charged one. If you choose a mod with an external battery, it is recommended that you always charge batteries with a dedicated external charger and always store the battery safely when not in use. For more information about battery safety visit here.