REDLINK Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger Best-in-Class Construction: Offers long-lasting performance and durability Fuel gauge onboard: Displays remaining runtime for less downtime on the job All-Weather Performance: Delivers fade free power in extreme jobsite conditions Versatility: Powers more than 100 Milwaukee M18 cordless power tools The M18 REDLITHIUM HIGH DEMAND 9. 0 Battery Pack delivers up to 5X more run-time, 35% more power, and runs 60% cooler than standard 18V lithium-ion batteries. The battery is best optimized for high draw products and sustained run-time applications, and it provides the next, large step towards full corded replacement when paired with the M18 system of solutions. It maintains full power and runs substantially cooler through heavy applications, allowing users to push their cordless tools harder and longer than ever before. The M18 REDLITHIUM HIGH DEMAND 9. 0 battery is fully compatible with 100+ M18 tools.