Ipod 6th Generation Battery Original | Ipod Nano 7th Generation Battery - Original - Aliexpress
Apple Ipod Nano 8GB & 16GB 3rd 4th 5th 6th 7th Gen __ - Etsy
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