what is the difference between high output and high demand?
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 M18™ REDLITHIUM™ HIGH OUTPUT™ HD12. 0 Battery Pack provides 50% more power and runs 50% cooler vs M18™ REDLITHIUM™ HD battery packs.