The MILWAUKEE® M18™ 18-Volt Lithium-Ion HIGH OUTPUT™ CP 3.0 Ah Battery Pack (6-Pack) provides 50% more power and runs 50% cooler vs M18™ REDLITHIUM™ CP battery packs. This increased performance results in the same power and runtime of a M18™ REDLITHIUM™ XC battery in a lighter and more compact package. The 18-volt battery pack delivers fade-free power and runs substantially cooler through heavy applications, allowing trade professionals to push their cordless tools throughout a wide application range.