I'm guessing 4-5 hours for the most demanding games. It's already a powerhouse, but being actively cooled, the fan is going to use extra power whenever it needs to run. We can only hope it has a user replaceable battery, or that the tablet can siphon power from the controllers' batteries if it needs to. 6 hrs would be incredible, considering that's what I get while just web browsing on my phone and tablet.
On the plus side, it's pretty thick, so they may have put a pretty beefy battery in there to begin with. Only time will tell.








