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  • MAX Output Batteries provide up to 2X more power compared to the 1.5 Ah lithium-ion battery (AC870015)
  • Up to 3X more runtime compared to the 1.5 Ah lithium-ion battery (AC870015)
  • Advanced Intelligent Electronics and innovative cooling technology for extended battery life
  • Compact size reduces user fatigue
  • The fuel gauge displays the power level on the job
  • 100% Compatible: Works with all RIDGID 18V Batteries, Tools, and Chargers
  • Includes: (1) R840040 18V 4.0 Ah MAX Output Lithium-Ion Battery and operator’s manual
  • Charger sold separately


  • Brand: Ridgid
  • Battery Amp Hours: 4.0
  • Battery Power Type: Lithium Ion
  • Charge Time (min.): 60
  • Voltage (volts): 18 V

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