850 mAh Replacement Extended battery for iPod classic 5th 6th gen 30GB A1238 723905661663 | eBay
Amazon.com: iFixit Battery Compatible with iPod Video 30 GB - Repair Kit : Electronics
Battery For Apple iPod Classic 4th Gen Photo 20GB 30GB 40GB 60GB A1099 616-0206 - Walmart.com
Amazon.com: Battery for Apple iPod Video/Classic 5th Generation 30GB, LP 2-Pack 900mAh Replacement Battery for iPod G5 Compatible with 616-0227, 616-0229, 616-0230, 616-0392, 616-0412, EC008, EC008-1, EC008-2 : Electronics
1 X 650mah 3.7v Battery For Ipod Classic Gen 6th 7th 80gb 120gb Thin 160gb For Ipod 5/5.5 Gen Video 30gb 616-0229 Battery - Mobile Phone Batteries - AliExpress