The SNAP-ON CTB4187 18v Battery is a high-quality power tool accessory featuring Nickel-Cadmium battery technology. With a capacity of 2.5Ah and a voltage of 18V, this battery provides long-lasting power for all your power tools and workshop equipment. Designed by Snap-on, a trusted brand known for its durable and reliable products, you can trust that this battery will keep your tools running smoothly. Made in the United States, this freshly refurbished battery with Tenergy cells ensures top-notch performance for all your projects.