The DEWALT DCB609Y FLEXVOLT Battery pack represents a transformative advancement in power tool technology, exhibiting the remarkable capability to dynamically adjust voltage output in accordance with the specific requirements of varied tools. With the ability to seamlessly power a comprehensive range of tools including the latest 60-Volt MAX Brushless and 120-Volt MAX Brushless models, this battery pack transcends conventional limitations by offering backward compatibility with existing 20-Volt MAX tools and chargers. Boasting a substantial 9.0 Ah capacity when utilized in conjunction with a 20-Volt MAX tool, it embodies the fusion of corded power with cordless freedom, delivering unparalleled versatility across diverse applications. Equipped with a LED state-of-charge display, users can easily monitor battery status for optimal efficiency. As an integral component of the DEWALT FLEXVOLT System, underpinned by cutting-edge Lithium Ion technology, this battery pack epitomizes the pinnacle of performance, reliability, and innovation in the realm of power tools.