The Dewalt 60 Volt, 9 AH flex volt battery is a high performance, durable power source designed for professional tools. Its 60 volts deliver enough power to run even the most demanding tools, while its 9 amp hour capacity ensures long-running time. Its flex volt technology allows the battery to automatically switch voltage when you switch tools. This innovative battery guarantees uncompromised power, performance and durability. Invest in this battery to keep your tools running at their best.