Fully working apple iPod classic 3rd generation 15 Gig Good battery. 2700 songs | eBay
850mah Li-on Replacement Battery for Apple iPod Classic 3rd Generation – Elite Obsolete Electronics
Build Log: Restoring a 3rd Gen iPod – Stephen McLeod Blythe – Clicky Steve
New In Box Original OEM TYLT PowerPlant Portable Battery Pack with Embedded 30-Pin Cable for iPad 1st Gen. / 2nd Gen. / 3rd Gen. & iPod Nano / Classic / Touch - Newegg.com