Lenovo IdeaPad 520S-14IKB / 520S-14ISK Battery (L17M3P51 / L17L3P51)

Lenovo 520S-14 battery is a slim internal replacement battery designed for IdeaPad 520S ultrabooks. It provides stable and efficient power output for everyday computing such as office work, browsing, media playback, and light productivity tasks. Built with high-quality lithium-ion cells, it ensures safe charging, consistent performance, and long cycle life. Different variants exist depending on configuration, with some models using a 30Wh compact battery and others using a higher capacity 52.5Wh version. This battery is commonly used to replace worn-out or faulty original batteries in Lenovo IdeaPad 520S-14IKB and related 520S models, restoring full portability and reliable backup power.