Acebeam K40S LED Flashlight (Black)

BH #ACK40S • MFR #K40S
Acebeam K40S LED Flashlight (Black)
Key Features
  • Peak Output 1500 Lumens
  • Cree XPL High Intensity LED
  • Tailcap Push-Button Switch
  • Rotary Brightness Level Selector
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Designed for military and law-enforcement use, search and rescue, hunting and outdoor adventures, the Acebeam K40S LED Flashlight offers six brightness levels with a maximum output of 1500 lumens and a defensive strobe. A tailcap push-button switch controls power on a momentary and constant-on basis, while the brightness level is selected by twisting the magnetic ring just behind the light's head. Runtime ranges from 1.5 hours on Turbo to 2000 hours on the 0.5-lumen lowest setting.
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Acebeam K40S Overview

  • 1Description
  • 2Light Performance
  • 3Switching
  • 4Construction Details

Designed for military and law-enforcement use, search and rescue, hunting and outdoor adventures, the Acebeam K40S LED Flashlight offers six brightness levels with a maximum output of 1500 lumens and a defensive strobe. A tailcap push-button switch controls power on a momentary and constant-on basis, while the brightness level is selected by twisting the magnetic ring just behind the light's head. Runtime ranges from 1.5 hours on Turbo to 2000 hours on the 0.5-lumen lowest setting.
Built of Type III hard-anodized aluminum, the K40S has a generously knurled handle for a secure and satisfying grip. Heat-sink construction and a copper base plate help dissipate heat from the light's Cree XPL High Intensity LED. The light carries an IPX8 rating for water resistance and is powered by three user-supplied 18650 li-ion batteries.

Light Performance

  • Level 6: 1500 lumens
  • Level 5: 950 lumens
  • Level 4: 550 lumens
  • Level 3: 250 lumens
  • Level 2: 25 lumens
  • Level 1: 0.5 lumens
  • Runtime: 1.5-2000 hours
  • 1500-lumen strobe, 3-hour runtime
  • Cree XPL High Intensity LED

Switching

  • Tailcap push-button switch for on/off, momentary and constant-on
  • Magnetic selector ring behind light head for choosing brightness level

Construction Details

  • Type III anodized-aluminum housing
  • Knurled handle for secure grip
  • IPX8-rated water resistant
  • Runs on three user-supplied 18650 li-ion batteries
  • Measures 7.3 x 1.9", head diameter 3"
  • Weighs 16 oz without batteries

Acebeam K40S Specs

General
Lumen OutputHigh: 1500 Lumens 
Low: 25 Lumens 
Minimum: 0.5 Lumen 
Illumination Source1 x LED
Power
Estimated RuntimeHigh: 1.5 Hours 
Low: 140 Hours 
Minimum: 2000 Hours 
Battery Type3 x 18650 Lithium-Ion
Physical
Material of ConstructionAluminum
Water ResistanceWaterproof, IPX8
Bezel Diameter3.0" / 7.6 cm
Dimensionsø: 1.9 x L: 7.3" / ø: 4.9 x L: 18.6 cm
Weight16 oz / 453 g
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