Green Cell ® Laptop Battery 45N1079 for Lenovo ThinkPad Tablet X220 X220i X220t X230 X230i X230t - Green Cell
Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ ( Manufacturers P/N; 0A36307 ) 94Wh Extended Life System Battery For X220 And X230 Laptops Only : Electronics - Amazon.com