Old school iPod Nano battery replacement – Fix It Workshop
Brand New 3.7V Li ion Battery Replacement 330mAh for iPod Nano 1 1st Gen MP3 1GB 2GB 4GB with Tools #30|3.7v li-ion battery|3.7v li-ionbattery for - AliExpress
Apple iPod Nano A1137 1st Generation White 1GB | eBay