lenovobatterycanada.com: Battery for Lenovo ThinkPad X220 Tablet
facelessloser on Twitter: "Not surprising but adding a 9 cell battery to my thinkpad x220 made it quite a bit heavier. Hope its better battery life then my old aging battery #ThinkPadX220 #
X230 New Laptop battery for Lenovo ThinkPad 9 Cell Lithium Ion Battery 44++ 94Wh Extended Life System Battery For X220 And X230|Laptop Batteries| - AliExpress
X220 with 9 cell battery is awesome. : r/thinkpad
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