New Battery for Lenovo ThinkPad X220 X220i Tablet X220t 42T4881 42T4879 42T4882 | eBay
Lenovo ThinkPad Battery 67 - Notebook battery - 1 x lithium ion 3-cell 29 Wh - for ThinkPad X220 Tablet; X220i Tablet; X230 Tablet; X230i Tablet (0A36316) at TigerDirect.com
New Genuine Laptop Battery For Lenovo Thinkpad X220 X220i X220t X230 X230i X230t Tablet Series 11.1v 5600mah - Laptop Batteries - AliExpress
I put the Lenovo ThinkPad X220's 24-hour battery claim to the test | Windows Experience Blog
Bay Valley Parts®Lenovo 6-Cells 11.1V 5200mAh Hi-Quality Replacement Laptop Battery for THINKPAD X220T,X230T,X220 Tablet,X220I Tablet,X230 Tablet,X230I Tablet Series