Regarding the battery that is stuck on. The pressure switch is actually stuck, and chances are, you can probably fix it. Grab a paperclip and bend it all out of shape. Now, take the long straight part and plunge it in and out of the small battery hole. This should hopefully loosen it up and turn it off. Then give it a few sucks and it should be good to go. If it was stuck in the on position and the atomizer is still connected, chances are, it probably burnt it up to a crisp. I’m hoping its disconnected. Once you get it off, give it a full 4+ hour charge and give it another go.