HP Battery 3 Cell 41 Wh LI-Ion

HP Battery L11421-545 is a three-cell notebook battery intended to provide portable power for a laptop. Its part number and battery specifications identify it as a replacement component for notebook use.

The battery uses lithium-polymer technology and has a stated capacity of 3440 mAh / 41.04 Wh. Its specified output voltage is 11.34 V. Together, these details describe the battery’s stored energy and electrical output without promising a particular runtime, which depends on the notebook and how it is used.

This is a practical replacement option when the required battery part number is L11421-545. The specification is compact: three cells, lithium-polymer construction and clearly stated capacity and voltage.