5B11M90033 Lenovo Internal lithium-ion battery, 57Wh capacity, 15.36V voltage, 4 cells, designed for select Lenovo laptops. 57 Wh Internal lithium-ion battery, 57Wh capacity, 15.36V voltage, 4 cells, designed for select Lenovo laptops.Power your Lenovo laptop reliably with the genuine 57Wh Lithium-Ion internal battery. Designed for specific Lenovo models, this 4-cell battery delivers the optimal voltage of 15.36V, ensuring efficient and sustained performance for your mobile computing needs. The lithium-ion technology offers longevity and stability, making it an ideal choice for those who frequently use their laptops while on the move.Manufactured by BYD, a trusted name in lithium battery production, this battery meets high standards for quality and performance. Perfect compatibility with your Lenovo device guarantees a hassle-free replacement, aiming to minimize downtime and enhance productivity.At EET, we take pride in providing authentic, high-quality IT components. Our extensive expertise ensures that you can find reliable products that support your technology investment and power your work despite any challenges.Invest in your laptop’s performance while ensuring longevity with this essential battery upgrade.