The DEWALT DCB182‑B1 delivers a significant upgrade in runtime without adding weight or bulk over the earlier 3 Ah 18 V XR pack. It leverages DEWALT XR 4.0 Ah Li‑Ion battery technology for extended runtime and optimized power to tackle demanding applications more efficiently. Designed to be fully compatible with all 18 V and 20 V MAX XR cordless tools, it ensures seamless integration across the DEWALT cordless lineup. The built‑in LED state‑of‑charge indicator (“fuel gauge”) lets you check remaining battery power at a glance, reducing downtime. Despite the higher capacity, its lightweight, compact form factor mirrors the weight and dimensions of the previous-generation 3 Ah pack—about 0.6 kg with a footprint of roughly 6 cm × 6 cm × 6 cm. Plus, as a Li‑Ion pack, it features no memory effect and minimal self-discharge, supporting long‑term storage and reliable startup after idle periods.