I handed over my vape for repair under the Central Department store. They were led by the nose for 4 months, they said that the battery was swollen, it was necessary for the battery to run out to the end. As a result, I couldn't stand it, I took it away. I gave it to a friend, he looked, everything was fine with the battery. It's just been 4 months, it's not clear why. In fact, your "repair specialist" couldn't even make it out.