The Genuine Kobalt 40V MAX KB 245-06 2.5Ah Lithium Ion Battery Pack is a high-quality power tool accessory designed for use in various tools and equipment. With a capacity of 2.5Ah and a voltage of 40V, this black battery pack is lightweight at 1.13 lbs and is ideal for extended periods of work without the need for frequent recharging. Manufactured by Kobalt, a trusted brand in the industry, this lithium-ion battery pack is a reliable choice for DIY enthusiasts and professionals alike. Made in China, this unit comes with no warranty, but its durable construction ensures long-lasting performance.