I received mine a couple days ago, and it's definitely an upgrade from what I started with but the battery life is not as long as what's touted here. I got around 800 puffs taking it out of the box, had to charge and right now after 326 puffs the battery reads 3.6v and the light is yellow. I'm running a PT2 mini with a 2.5 ohm coil, the battery is set at 3.8v and 7.0w. I'm still trying to understand this thing and my electronics experience is limited (I don't know Ohm's Law), if there's something I'm not understanding here please let me know. Thanks for the input!
When you charge, you have to leave it on charge until the green light goes out.
If you did that (betting you didn't