Apple's New iPod - Evolutionary, not Revolutionary

The first thing you'll notice here is that the iPod's battery is significantly smaller than what was used in the old unit yet the new unit provides the same 8 - 10 hours of battery life (interestingly enough, the default contrast ratio on the new iPod is noticeably lower than on the old unit, luckily it's adjustable). While the old battery was just as large as the hard drive, the new battery is around 1/3 the size, although slightly thicker. Instead of being mounted directly on the hard drive, the new battery is placed in a rectangular cutout section of the motherboard as you can see below:

Click to Enlarge

This leads us to the next point about the new iPod's internals - the motherboard is considerably smaller.

Old iPod motherboard (left) vs. new iPod motherboard (right) - Click to Enlarge