Replacement Laptop Battery, 11.55V, 3640mAh

This replacement lithium-ion battery is engineered as a direct substitute for the ASUS B31N1912, designed specifically for select ASUS VivoBook 14 series laptops. With an 11.55V nominal voltage and 42Wh capacity, this 3-cell battery delivers reliable power performance for extended work sessions and portable computing applications. The battery features high-capacity cells configured to provide approximately 3550-3640mAh output, supporting the demanding requirements of modern ultrabook systems. Constructed from premium lithium-ion or Li-Polymer chemistry, this replacement battery is engineered to maintain optimal performance throughout its operational lifespan. The battery supports up to 500 recharge cycles, ensuring long-term value and dependable service in business and professional environments. Its black finish integrates seamlessly with ASUS VivoBook 14 aesthetics while withstanding regular workplace use. This battery is ideal for organizations and individual professionals who require reliable backup power solutions, extended mobile computing capability, or replacement batteries for aging laptop systems. Whether used in office environments, field operations, or remote work settings, this replacement battery restores full battery capacity to compatible ASUS laptop models. The product is suitable for procurement by IT departments, system integrators, and businesses maintaining diverse laptop fleets. Installation is straightforward, requiring no specialized tools or technical expertise beyond basic battery replacement procedures. This replacement component helps extend the operational lifespan of existing ASUS VivoBook 14 systems, providing a cost-effective alternative to complete device replacement. Ideal for businesses looking to maintain equipment functionality and reduce technology obsolescence costs while supporting mobile workforce productivity.