GPhone with battery that keeps on going

It appears the new batch of android based phones may have a much better battery life. I've just got my first gphone so this is going tobe one of the main issues. I've ordered a spare battery. I was happy switching batteries in my previous phone so it should be fine here too.

Still I would love to not have to worry like this guy is talking about. Going for days without recharding. That would be a dream