Apple iPod Nano 5th Replacement Battery: BatteryClerk.ca
Replacement Battery For Apple Ipod Nano 5th Gen 3.7 V/0.91 Whr Li-polymer Rechargeable Battery With Opening Pry Tool Kits - Digital Batteries - AliExpress
Apple iPod Nano 5th Gen Ultimate Repair Guide Battery LCD Buttons Headphone Lock switch - YouTube