As the name suggests, disposable e-cigarettes are meant to be thrown away after smoking. Just like current cigarettes, they are gone after smoking. Whether the battery is out of power or the e-liquid is used up, you can throw it away and replace it with another one.
The battery of a barrel-shaped disposable e-cigarette is generally 18350, which can generally support 1500 puffs, and in fact it is about 1200~1300 puffs. Currently, disposable e-cigarettes are mainly popular abroad, while domestic cartridges are still the mainstream.
