15 minuten - 1 uur
IPods have a tendency to behave oddly when the battery gets old and swells up. The controls do not work correctly, so in addition to the obvious inability to hold a charge - they become cranky doing any of the normal things like clicking the menu key or advancing to the next song.
The repair literally took me just under 3 minutes. I started gently prying at the end with the power port using two very small straight blade screwdrivers. Gradually working the white case loose - you can start to see the internal clips made into the the case that hold the two pieces together. Using a small straight blade screwdriver it is possible to push on them and "unlock" them to release it. Just be very careful not to break the very fragile cable that must remain intact between the two pieces.
I bought and tried to use the plastic "Fixit" tools at first, but I almost immediately broke the tips off of them. They were broken and unusable in less then 30 secs without managing to pry anything open at all. They were not sturdy enough for the job at hand and they only wasted time - don't bother with buying them as you will simply end up throwing them away. The tiny Phillips head screwdriver served no purpose whatsoever, so just buy the battery itself and invest in a separate set of small screwdrivers that include a few straight blade ones. A set of jeweler's screwdrivers or small computer screwdrivers are the sort that works well for this. A very small straight blade screwdriver was also useful prying the battery power connector loose from the circuit board to remove the old swollen battery. Again be mindful to hold the two separate parts of the case close enough together that you just barely have room to slide the new battery in between or you break the cable that runs between them.