How good is the iPhone 5 battery?

I'm buying the iPhone 5S. But I'm asking how good is the iPhone 5 battery (last years iPhone)

The 5S has a slightly larger physical battery, as well as the software and processors are less power consuming. So the 5S will have a better battery. But for those who have an iPhone 5, how many hours on average of mixed usage did it last before needing to charge it?

Yeah its good