High Output battery pack provides up to 25% more power compared to M12 B4 Redlithium battery pack, and runs up to 25% cooler then other M12 Redlithium battery packs through heavy applications. Features overload protection to prevent damage to cordless power tools, temperature management system for maximum battery life and individual battery cell monitoring to optimise tool run time for long term pack durability. Discharge protection prevents cell damage from over-discharge. Can be used in extreme temperatures down to -20°C without compromising on runtime and battery life. Also features integrated welded-frame construction with shock-responsive separators to prevent pack failure from excessive vibrations or drops. Improved housing is resistant to oils, solvents and greases. Overload Protection Overload Protection