The Lenovo Internal 3Cell 45Wh Li-ion SMP battery is designed to provide reliable power and performance for your Lenovo laptops, specifically the ThinkPad E480 and ThinkPad E580 models. With a capacity of 45Wh, this battery ensures that you can work longer without interruptions, making it an essential component for professionals on the go. Engineered with advanced lithium-ion technology, this battery not only offers a longer lifespan but also enhances the overall efficiency of your device. The 3Cell configuration allows for optimal power distribution, ensuring that your laptop runs smoothly during intensive tasks. Choose the Lenovo Internal 3Cell 45Wh Li-ion SMP battery for a dependable power source that keeps your productivity at its peak.