Lenovo Battery Internal 3Cell 52.8Wh LiIon

Lenovo 5B11M90077 is an internal lithium-ion replacement battery for select Lenovo laptops. Its part number helps identify the battery intended for a matching computer.

The three-cell design has a stated capacity of 52.8 Wh and a specified voltage of 11.58 V. The listed battery model is L20C3P71.

This component fits inside the laptop, so it is intended for an installation using the corresponding Lenovo battery rather than for use as an external power bank or charger.