iPod Nano 4th Generation Teardown - iFixit

E-YIIVIIL Replacement Battery 616-0407 Compatible with iPod Nano 4th gen 4 MB598LL/A A1285 MB754LL/A MB903LL/A with Tools : Electronics

iPod Nano 1st Generation Teardown - iFixit

iPod Nano 3rd Generation Teardown - iFixit

Inside Apple's new fifth-gen iPod nano (teardown photos)

iPod Nano 4th Generation Display Replacement - iFixit Repair Guide

iPod Nano 1st Generation Teardown - iFixit

iPod Nano 3rd Generation Repair - iFixit

iPod Nano Gets iFixit Teardown Treatment - SlashGear

iPod Nano 4th Generation Teardown - iFixit

iPod Nano 3rd Generation Logic Board Replacement - iFixit Repair Guide

iPod Nano 7th Generation Teardown - iFixit

Sign of expanding batteries?

iPod Shuffle 4th Generation Repair - iFixit

iPod nano teardown reveals new Apple chip and Sandisk flash - The Verge