42T4903 IBM Lenovo 6-Cell Slim External 19 ThinkPad Battery (Refurbished)
Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ ( Manufacturers P/N; 0A36307 ) 94Wh Extended Life System Battery For X220 And X230 Laptops Only,.., By Visit the Lenovo Store - Walmart.com - Walmart.com
Opened a 44 battery for my X230 - these ain't 18650 cells! : r/thinkpad