I have a vision spinner 1300 mah, I charged it out of the box yesterday to a full charge and prob vaped on it for about 3-4 hours of continuous use before I put it on the charger today at 4ish....well its almost 10 and it is still not charged. Does it usually take this long for everyone else? I was still able to vape out of it and didn't see the red in the light so I didn't think it was low,but man, 6 hours is a long time. I was just wondering if this is normal or if I have an issue.