The DeWalt DCB182 is an 18V XR Li-Ion battery offering 4.0Ah capacity, delivering 33% more runtime compared to 3.0Ah versions. Its lightweight design provides 18V power equivalent to a 12V NiCd/NiMH pack, ensuring no memory effect and minimal self-discharge for enhanced productivity. Compatible with all DeWalt XR Li-Ion 18V tools, it features excellent electrical characteristics.