You all are setting yourselves up for disappointment with this talk of 8 hours. There ain't no way it will run demanding games for anywhere near that long. There is no portable device on the market that has that kind of battery life while running resource intensive software.
What we need to hope for is that it charges via micro-USB, or at least some sort of cable that can plug into a standard USB charger. Then there's nothing to worry about, as portable chargers, car chargers, and the abundance of compatible wall chargers will make charging anywhere convenient.