Apple iPod classic 2nd Generation White (10 GB) for sale online | eBay
120mah Big Replacement Battery For Apple Ipod For Shuffle 2nd Generation 2 Shuffle2 616-0274 G2 G3 3 Accumulator Batterie Akku - Rechargeable Batteries - AliExpress
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