The majority of vape batteries last between 6-12 months, but it will largely come down to the frequency the battery is used and how well it is looked after and maintained. Whilst some believe that rechargeable batteries last forever, this is simply not the case. Every battery has what is known as a charge cycle, and this refers to how many times the battery can be recharged before needing to be replaced. Using a charger with multiple bays can also help to extend the lifespan of your battery as they long longer when charged slowly.
There are different types of batteries used for vaping. While some devices will have built-in batteries that are charged via USB port type C, others have removable batteries.