Ijust got it yesterday, I had to charge the battery the recommeded 8 hours about 11:30 last inght I started using it till around 2:30 Am got up this am at 9:30 its now 12:15 pm and its still going strong. I really love it. It is said to give a good 8 to 10 hours of vaping I have another battery already chargedi, so Ill be all set. Glad I invested the money for this ,the 510 battery was driving me insane I used to have 4 batteries charging now all i reslly need is one or two. Thanks Vapfilife