Replacement Battery for Apple iPod Nano 4th Generation A1285 16GB 8GB 616-0407 | eBay
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 4th Gen Repair Battery Replacement Service - Your iPod_Wizard | eBay
4th Gen Ipod Nano Battery Replacement | Ipod Nano 7th Gen Battery Replacement - Mobile Phone Batteries - Aliexpress
2023 original Battery For iPod Nano 1 2 3 4 5 6 7 4th 5th 6th 7th 1st 2nd Generation 2 Gen 2Gen 3rd 3 Gen 3Gen + Free Tools - AliExpress