The Challenge 18V = 1.5A Li-Ion Battery ET-D1806 is a high-quality cordless battery pack designed for the Challenge brand. This rechargeable battery is ideal for use in various tools and devices that require 18V of power, with a capacity of 1.5A. this Li-Ion battery offers reliable performance and long-lasting power for your tools and equipment. One unit is included in the pack, making it a convenient and essential addition to your cordless tool collection.