Description Our M12 REDLITHIUM⢠HIGH OUTPUT⢠CP2.5 Battery Pack delivers 25% more power and runs 25% cooler than our other M12 REDLITHIUM⢠CP battery packs. This increased performance of the lithium-ion battery gives you the same power and runtime of an M12 REDLITHIUM⢠XC battery in a lighter and more compact package.Â