Why does the LED light of the electronic cigarette often flash?

This is a program setting. The e-cigarette adopts a humanized design. When it is continuously used for more than 15-18 cigarettes (almost the number of cigarettes), or when it is used for more than 8-10 seconds, the indicator light will flash and the battery will stop working. This is a protection mechanism, which may choke if the amount of smoke is too large. It is also a protection for the power supply to prevent the power from being too high.