Dumb question. Have you tried wiggling the center pin on the battery up just a smidge? My daughter was having problems with one of her Evods a few weeks ago. Her battery was showing as fully charged by the light on the charger, but she was getting little to no vapor, even with a brand new, straight out of the box, coil. I used a yarn needle to raise the center pin a bit, and now the battery is working just fine.
Not dumb at all. Happens all the time. 510 connectivity problems are widespread. Good call--thank for bringing it up!
I never even thought about it because I was so focused on the battery life.
