Lenovo Battery Internal 4 Cell 52.5Wh LiIon LG

The Lenovo 5B11M90025 is an internal replacement battery for compatible Lenovo laptops, installed inside the computer to provide portable power.

It uses lithium-polymer technology and has 4 cells. The listed capacity is 3390 mAh, or 52.5 Wh, with a 15.48 V output.

Compatibility includes selected ThinkPad T14 and P14s models from Gen 3 and Gen 4. It is intended for laptop servicing when the matching internal battery needs replacement.