Milwaukee MIL-48-11-1890 M18 9AH Battery


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.


  • The most capable 18V battery in the industry
  • Latest technology advancements provide the most energy & power output by a single cell
  • Additional row of 5 cells provides the most work output of any 18V battery
  • Sustains full power through heavy applications better than any other 18V pack on the market
  • Low-impedance, high-power cells deliver more power output to the motor
  • Advanced framework of motor and electronics take advantage of increased power
  • Larger surface area pulls heat away from the cells
  • Material is designed to transfer energy more efficiently
  • The power to cut 537+ cross cuts in 2" x 4"material
  • The power to grind 20+ minutes continuous
  • The power to cut 400 cuts in 3-1/4" Baseboard
  • The power to Hawg up to 150 2-9/16" Holes
  • 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


Voltage 18V
Amp Hour 9.0
Weight 2.4 lbs
Battery Type 18v Lithium-Ion
Width 3.1"
Length 5.1"
Height 3.4"