Replacement laptop battery for Lenovo laptops & notebooks, models include IdeaPad G400s, G500s, G505s, G50, Z50, Z70, Z710, S410p, S510p. This 2,800 mAh Lithium-Ion battery is rated at 14.4V and has an average run time of Up to 5.0 Hours. This is an OEM replacement for Lenovo part numbers including 121500171, 121500172, 121500173, L12L4A02, L12L4E01, L12M4A02. See the specs tab for detailed Lenovo laptop compatibility. The longevity rating is 300-500 Cycles and it comes with a 1 year warranty. Micro Center offers laptop battery replacement and installation services to ensure your laptop will be back up and running quickly ask the store for details.