The Lenovo (5B11B79218) Internal 4-Cell Battery is designed to provide reliable and high-performance power for your compatible Lenovo laptops. With a capacity of 90 Watt-hours, this rechargeable battery ensures that you stay powered up for extended periods, whether you're working on critical projects or enjoying some downtime with multimedia. Built by Lenovo, a brand renowned for its innovative computing solutions, this battery is perfect for professionals, students, or anyone needing dependable power on-the-go. Its robust design incorporates safety measures to prevent overheating and extend battery life, making it a smart choice for long-term usage. With easy installation, this battery seamlessly integrates into your device, giving you the freedom to work anywhere without the constant worry of finding an outlet. Elevate your laptop's performance with this high-capacity internal battery that caters to the needs of modern users who demand efficiency and durability in their tech accessories.