5B11M90007 Lenovo Internal lithium-ion battery, 3-cell design, 57Wh capacity, compatible with Lenovo ThinkPad systems. 57 Wh Internal lithium-ion battery, 3-cell design, 57Wh capacity, compatible with Lenovo ThinkPad systems.Enhance your Lenovo ThinkPad's performance with an advanced internal Lithium-ion battery, featuring a capacity of 57Wh and a reliable 3-cell design. This battery is specifically engineered for compatibility with ThinkPad systems, ensuring seamless integration, including use with the T14s model. Designed to provide energy when unplugged, this battery ensures uninterrupted productivity, supporting your demanding tasks and mobile lifestyle.Lenovo is renowned for its high-quality, durable products, and this battery continues that tradition by providing dependable power and longevity you can trust. Its straightforward installation makes it a convenient choice for boosting your device’s portability.EET offers this essential Lenovo battery with assurance of authenticity and dedicated customer support, enabling you to maximize your laptop's performance with ease.