APPLE iPod Classic Video 1TB CE SSD + Sony 2000mAh battery + Back Cover Upgrade | eBay
2000mAh Battery for the iPod Classic & Classic Connect – moonlit.market
iPod classic 160gb modded to 256gb with 2000mah battery and Bluetooth. Just waiting on a 3d printed back. All fits within a thin shell. Very happy with how it's come up. :