Milwaukee's M12 REDLITHIUM™ HIGH OUTPUT™ XC5.0 Battery Pack delivers 25% more power and runs 25% cooler than other M12 REDLITHIUM™ XC battery packs. The increase in power elevates the performance of the entire M12™ system and drives the next breakthrough in M12 FUEL™. The lithium-ion battery delivers fade-free power and runs substantially cooler through demanding applications, allowing you to push your cordless power tools throughout a wide range of applications. Each battery pack is built for heavy-duty use, runs cooler, and performs in climates below 0°F/-18°C. In addition, Milwaukee's M12 REDLITHIUM™ HIGH OUTPUT™ XC5.0 is built with a resistant housing, increasing the protection against exposure to common oils, greases, and solvents found in transportation maintenance and manufacturing environments. The M12 REDLITHIUM™ HIGH OUTPUT™ XC5.0 is fully compatible with 125+ M12™ solutions.