92P1171-8.
Manufactured by Denaq. 93P5030-8 high-capacity 8-cell laptop battery for your IBM THINKPAD X X60 laptop computer. this battery will meet or exceed your original OEM IBM battery.Denaq NM-40Y6999-8 8-Cell 4000mAh Battery for IBM THINKPAD X X60 Laptops 92P1165-8.