44+ Original 63Wh Battery for Lenovo ThinkPad X220 X220i X220s X230 X230i New | eBay
44+ 44++ New Genuine Original Laptop Battery For Lenovo ThinkPad X220 X220i X220s X230 X230i 45N1022 45N1023 45N1024 45N1025 - AliExpress
Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ ( Manufacturers P/N; 0A36307 ) 94Wh Extended Life System Battery For X220 And X230 Laptops Only - Walmart.com
ThinkPad Battery 44 (4 cell), ThinkPad Battery 44+ (6 cell) and ThinkPad Battery 44++ (9 cell) - Overview - Lenovo Support IL