Lenovo 5B11B36312 is a rechargeable three-cell battery for compatible Lenovo laptops. Installed inside the laptop, it can replace a worn battery that no longer holds charge well. Its Lenovo model is L20M3PG0.
With a rating of 47Wh and 11.52V, this battery is identified by specifications that distinguish it from other Lenovo versions. It is listed for select laptops in the Chromebook, IdeaPad and ThinkPad families, so check compatibility with the particular laptop before choosing it.
This internal part is intended for laptop repair when battery operating time has shortened or the battery cannot retain a charge. The 5B11B36312 part number and L20M3PG0 model identify it for service and replacement in supported Lenovo laptops.