The Lenovo 5B11Q26224 is a 3 V, single-cell lithium button-cell battery listed for Lenovo ThinkPad laptops. Its part number identifies this specific battery, and its compact button-cell format is distinct from the multi-cell batteries that power a laptop.
It is intended as a small battery component for a compatible ThinkPad. The available description confirms its lithium chemistry, one-cell construction and 3 V rating, but gives no dimensions or package contents.