I got my husband a sigelei Mini 30w because he hates the pen style. We've had 2 now. The first one stopped working because of leaks from an old tank and I could understand that. The new one he's been using for about 1 week and it has stopped working now too (no leaks this time at all). When I put a new battery in it will occasionally blink the sigelei name at me a few times and then nothing. It won't turn on it won't do anything. Sometimes when I put a new battery in it won't even blink at me. What the heck is going on? Any ideas? He's ready to go back to smoking and I really want to avoid that, but I can't keep buying him a new box mod every week.