Our Lithium Battery for Samsung R428 R580 AA-PB9NS6B is a high-quality replacement battery that provides 100% compatibility and reliability. Built with the latest technology, it features a long-lasting lifespan and is designed to meet or exceed OEM specifications. With a capacity of 5200mAh, it ensures uninterrupted laptop usage and delivers a performance efficiency that meets the demands of each user. Moreover, as a factory-based company, we guarantee the highest standards in the production and quality of our products, with an emphasis on providing cost-effective and eco-friendly solutions for all our customers.