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ASP Sentinel E3, and Sentinel X E3 Rechargeable LED Flashlight - 400 Lumens - 1 x 16340 (Included) or 1 x CR123A or 1 x AA - E3 (ASP-35745)

ASP Sentinel E3 side angle
ASP Sentinel E3 side profile
ASP Sentinel E3 tailcap
ASP Sentinel E3 charging with LED battery indicator
ASP Sentinel E3 side angle
ASP Sentinel E3 side profile
ASP Sentinel E3 tailcap
ASP Sentinel E3 charging with LED battery indicator
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ASP Sentinel E3 Rechargeable LED Flashlights

Triple Fuel Flashlight

The ASP Sentinel E3 Flashlights are some of the newest additions to the rechargeable family of ASP law enforcement flashlights. These lights are not only micro USB rechargeable, they also have the unique feature of accepting three different kinds of batteries. The Sentinel E3 and X E3 (no longer available) are powered by an ASP 16340 Li-ion battery (included), but can also be powered by one Li-ion CR123A or one Alkaline AA battery with no special adapter required. With the 16340 power source, these little lights can produce 400 lumens for up to an hour. The single tail switch button is easy to press and also has a lockout function (to prevent accidental activation) when you rotate it one full turn. A half press turns on the light in momentary mode, and a full press switches the light to constant on. Double tap the tail switch to get into the secondary mode (low lumen mode for the Sentinel E3 and a strobe mode for the Sentinel X E3). ASP flashlights are specifically designed to be used in law enforcement, duty, and security settings and applications, so you can be sure that they can withstand the test of everyday use.

This flashlight comes with two model options - the Sentinel E3 (ASP-35745) has slightly longer run times when powered by a CR123A battery (when compared to the X E3 option) and the secondary lighting level accessed through the double tap tail switch will automatically go to a lower lumen output mode. The Sentinel X E3 (ASP-35746 - No longer available) has a shorter run time when powered by a CR123A battery and the double tap secondary lighting level will automatically go to a powerful strobe mode. Choose which model is best for you!


  • 400 max lumen output
  • 111 meter max throw distance
  • Triple fuel capable for universal operation
  • Micro USB rechargeable
  • Double tap secondary lighting mode
  • Lockout functionality with tail switch
  • Polymer bezel ring
  • Water and impact resistant
  • Constructed from T6 high strength aluminum
  • Military grade Type 3 hardcoat anodized finish for durability
  • Sturdy Snap-Loc™ Clip attaches to bezel or switch end of light
  • ASP Limited Lifetime Warranty


  • 1 x Sentinel E3 Flashlight
  • 1 x ASP 16340 Li-ion Battery
  • 1 x ASP Snap-Loc™ Clip
  • 1 x ASP Retractable Charging Cord

Technical Specifications:

  • LED: Cree XPG LED
  • Lens: Tempered Optical Glass
  • Reflector: Parabolic
  • Switch: Single Tail Switch
  • Rechargeable: Yes
  • Charge Port: Yes - Micro USB
  • Charging Indicator: Yes - LED
  • Power Source: 1 x 16340 (included), 1 x CR123A, 1 x AA
  • Peak Beam Distance: 111 meters (364.17 ft.)
  • IPX Rating: Water Resistant
  • Impact Resistance: 2 meters (6.56 ft.)
  • Model Numbers: Sentinel E3: ASP-35745, Sentinel X E3: ASP-35746

  • Note: Use only ASP 16340 Lithium-ion rechargeable batteries with E3 lights.

    1 x 16340 Battery Brightness Outputs, Run Times, Throw Distances:

  • High: 400 lumens - 1 hour - 111 meters (634.17 feet)
  • Low: 27 lumens - 15 hours
  • System Voltage: 3.7 Volts

  • 1 x CR123A Battery Brightness Outputs, Run Times, Throw Distances:

  • High: 230 lumens - 2.5 hours - 85 meters (278.87 feet)
  • Low: 18 lumens - 30 hours
  • System Voltage: 3 Volts

  • 1 x AA Battery Brightness Outputs, Run Times, Throw Distances:

  • High: 90 lumens - 5 hours - 54 meters (177.17 feet)
  • Low: 10 lumens - 44 hours
  • System Voltage: 1.5 Volts

  • Charging Indicators

  • Flashing Red: Charging
  • Solid Green: Fully Charged

  • Dimensions:

    • Length: 3.9" (99.1mm)
    • Body Diameter: 0.83" (21.2mm)
    • Weight: 2.2oz. (62.4g)
    Runtime (Hours):-1-15-
    Output Modes:Dual Brightness Levels
    Compatible Batteries:1 x 16340, 1 x AA, 1 x CR123A
    Batteries Included:Yes
    Included Accessories:Batteries, Pocket Clip, USB Cable
    Flashlight Usage:Every Day Carry, Tactical
    Throw Distance (Max):111m
    Switch Location:Tailcap
    Warranty:Battery Junction 30-Day Warranty, ASP Limited Lifetime Warranty
    Return Policy:Battery Junction Return Policy
    Primary Material:Aluminum
    Product Weight:2.2oz
    Product Dimensions:3.9" (L) x 0.83" (Body Diameter)
    Country of Origin:CN
    PROP 65
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    By Happy C.
    Verona, VA
    What I was looking for.
    May 19, 2020
    I was looking for a versatile flashlight that had multiple ways to power it. Before I found this one, I had a light that used a CR123 or a AA batteries. Great light by the way. But my grand kids wanted to play with my flashlight and I never knew how low the batteries were when they finished and I didn't want the battery to give out when I needed it the most.
    With this flashlight I don't have to worry because when the are done, I just re-charge it. So I always have a charges flashlight and if the re-chargeable battery dies, I can use a CR123 or a AA battery.
    As with other ASP products, this is a quality light.
    There are no questions or answers for this item.

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    ASP Sentinel E3, and Sentinel X E3 Rechargeable LED Flashlight - 400 Lumens - 1 x 16340 (Included) or 1 x CR123A or 1 x AA - E3 (ASP-35745)

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