Green Cell ® Laptop Battery 45N1079 for Lenovo ThinkPad Tablet X220 X220i X220t X230 X230i X230t - Green Cell
Amazon.com: Lenovo 0A36307 ThinkPad 9 Cell Extended Life Battery 44++ for Lenovo ThinkPad X220, X230 Models Only. (Caution: Not for X220 Tablet, X230 Tablet Models) : Electronics
Amazon.com: Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ ( Manufacturers P/N; 0A36307 ) 94Wh Extended Life System Battery For X220 And X230 Laptops Only : Electronics
Lenovo 0A36307 ThinkPad Battery - Newegg.com
45N1035 Lenovo 2900mAh 6-Cell Battery for ThinkPad X230 Tablet (Refurbished)