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
Apple unveils iPod nano (PRODUCT) RED Special Edition | AppleInsider
For some, one iPod just isn't enough
iPod Nano, Shuffle Are Dead; Here Are 8 Other Discontinued Apple Products - TheStreet
iPod Nano - Wikipedia
File:Ipod nano red.JPG - Wikimedia Commons
Apple iPod Nano 4th Generation 4GB - Red, C - CeX (UK): - Buy, Sell, Donate
Apple iPod Nano 4th Generation (PRODUCT) RED (8GB) for sale online | eBay
Elite Obsolete Electronics New iPod Classic Black Gray Red 80GB - 1TB