so I got my spade today around 3pm.
I charged one battery while I vaped the almost dead one.
The battery charged up, I vaped on the battery while playing fallout 3 for 3 hours straight(medium to heavy hitting)
I can say that it is a truely awsome vape machine. The throught hit will drop though about the last 15 or so minutes on the battery life..that just tells me to change the batteries though : )