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It's normal
The "Popping" Noise
Sometimes, the e-liquid cartridge
makes a loud popping or crackling
sound when it first activates,
especially if your tank is new or
has not been used for a while.
This sound is simply the eLiquid
heating up around the coil.
Heat at the bottom of the
e-liquid cartridge
The internal coil heats to create
vapor and will also heat the area
around it. If holding CUE becomes
uncomfortable, pause longer
between draws.
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