Apple iPod Nano 2nd Generation 4GB Green ~ Fully Tested ~ Works 15 Hr. Battery - sonmieux.com
Replaced the dead battery in an old iPod Nano I bought (really wanted a cheap Product Red one) and not even 2 days later the replacement battery expanded. I would call this
iPod Nano 2nd Gen 8GB Logic Board with Battery
Apple iPod Nano 2nd Generation 2GB: Amazon.de: Electronics & Photo