The M18 REDLITHIUM XC 5.0 extended capacity battery packs construction, electronics, and performance, help deliver more work per charge and more work over the life of the pack. The M18 REDLITHIUM XC 5.0 Battery features a design that protects the pack against jobsite environments, routes water away from the electronics and out of the battery pack, extends run-time and life by minimizing heat, prevents pack failures from vibration and dropping, and also allows the battery to operate in extreme cold weather conditions (below OF/-18C). Milwaukee’s REDLINK Intelligence provides the battery overload protection to prevent you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. It also provides full system compatibility with 60+ M18 cordless solutions. 48111850 48-11-1850