Q&A: Does the number of cells in a laptop battery really matter all that much?
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
Dell 3-cell 42 Wh Lithium-Ion Replacement Battery for Select Laptops | Dell USA
Amazon.com: Aluo 42T4880 New Laptop Battery for Lenovo ThinkPad X220 Tablet X220iT Tablet Serie 42T4881 42T4882 42T4877 42T4879 42T4880 42T4879 52 Only Use in The x220 Tablet Notebook 52+ 10.8V 63Wh 5600mAh :
JIAZIJIA 42T4833 Laptop Battery Replacement for Lenovo ThinkPAd T400S T410S T410SI Series Notebook 59+ 42T4689 42T4691 42T4832 Black 11.1V 44Wh 3900mAh 6-Cell - Newegg.com
Cool. Finally, i got 9 cell battery. : r/thinkpad
Laptop 6 Cell Vs. 9 Cell Battery | Techwalla
Lenovo's last classic Thinkpads tour: T410, X220, T430s *MANY PICTURES* - Thinkpads Forum
YFDF9 - 6-Cell Battery for Latitude 13 3340 3350 - CPU Medics
29++ 9 Cell Battery for Lenovo ThinkPad X220 X220i
Amazon.com: 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 : Electronics
ThinkPad Battery 44 (4 cell), ThinkPad Battery 44+ (6 cell) and ThinkPad Battery 44++ (9 cell) - Overview - Lenovo Support IL