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New!  Nitecore Concept 1 1800 Lumen Compact EDC Flashlight
Nitecore Concept 1 1800 Lumen Compact EDC Flashlight

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Price: $64.95

Availability: Usually Ships in 24 Hours
Product Code: FL-NITE-C1

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1x Nitecore IMR18650 3100mAh 10A battery [Add $14.25]
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NITECORE Concept 1 Flashlight

Nitecore is continuing to push the boundaries with the Nitecore Concept 1, the first release in the new Concept Series. Featuring a premium CREE XHP35 HD E2 LED for a super bright 1800 lumens max output, the C1 is easily the top of its size class. A conveniently located single side switch control lets users adjust through 5 brightness settings and two selectable operating modes give a choice between direct access to Turbo or Strobe.

Operating on 1x IMR18650 battery (recommended) or 2x CR123A batteries, the C1 offers up to 300 hours of runtime on low and up to 30 minutes on Turbo. The compact 4.39" body tube weighs under 3 ounces without a battery making this flashlight perfect for everyday carry, travel and emergency backup.

Battery Note

The Concept 1 supports multiple battery options including button top & flat top IMR 18650 batteries. For optimal performance and to enable the full 1800 lumen output, we recommend using the button top IMR 18650 provided in the drop down option above (or here) which has a built-in protection circuit. The light will shut off at the maximum setting when using 2xCR123A or an 18650 battery with lower than 8A output.

NITECORE Concept 1 Specifications

  • Battery Type Supported: 1x IMR 18650 or 2x CR123A
  • Peak Beam Distance: 240 yards (219.45 meters)
  • Peak Beam Intensity: 12,100 cd
  • Brightness Outputs: (IMR 18650)
    • Turbo: 1800 lumens / 30 min
    • High: 810 lumens / 1h 30 min
    • Medium: 300 lumens / 4h
    • Low: 80 lumens / 15h
    • Ultralow: 1 lumen / 300h
  • Brightness Outputs: (2x CR123A)
    • High: 810 lumens / 1h 15 min
    • Medium: 300 lumens / 3h 30 min
    • Low: 80 lumens / 13h
    • Ultralow: 1 lumen / 200h
  • Weight (without battery): 2.18 ounces (61.9 grams)
  • Dimensions: 4.39in (111.5mm) x 0.96in (24.38mm) x 0.94in (23.87mm)

NITECORE Concept 1 Features

  • Utilizes a CREE XHP35 HD E2 LED, max output of up to 1800 lumens
  • Max beam intensity of up to 12,100cd, max distance of up to 220 meters
  • Crystal Coating Technology combined with “Precision Digital Optics Technology” for extreme reflector performance
  • Max runtime of up to 300 hours
  • Side switch for 5 brightness levels and 3 special functions
  • Integrated power indicator beneath the side switch displays remaining battery power (Patent No.: ZL201220057767.4 )
  • Power indicator blinks to report battery voltage to the nearest 0.1V
  • Features intelligent memory function (except for SOS and location beacon modes)
  • High efficient constant current circuit board provides constant illumination
  • The built in ATR module automatically regulates its output and adapts to the ambient environment, maintaining optimal performance.
  • Reverse polarity protection
  • Toughened ultra-clear mineral glass with anti-reflective coating
  • Magnetic tail cap with stand capability
  • Constructed from aero grade aluminum alloy with HAIII military grade hard-anodized finish
  • Waterproof in accordance to IPX-8 (two meters submersible)
  • Impact resistant to 1.5 meters


Turn on ─ When the light is in the standby status:
  1. Press and hold down the side switch until the light is turned on to the memorized brightness
  2. Tap the side switch twice quickly to activate the ultra-low brightness
  3. Tap the side switch three times quickly to enter Turbo in General mode or enter Strobe in Tactical mode
Turn off ─ With the light on, tap the side switch once to turn it off & go back to the standby status.
Brightness Selection ─ 5 brightness levels are available. When the light is in standby status, hold down the side switch until the light enters the memorized brightness level from last time. Continue to hold down the switch to cycle through “Ultralow-low-mid-high-turbo”. Release the switch to select and memorize the current brightness level. To reselect brightness level, tap the switch once to turn off the light and hold down the switch to cycle through 5 brightness levels.
Special Mode (Strobe/SOS/Beacon) ─ To enter the strobe mode:
  • When in standby status of tactical mode, quickly tap the switch 3 times
  • When in any illumination status, quickly tap the switch 3 times
  • ─ In the strobe mode, hold the switch for over 1 second to enter SOS mode; and then release and hold the switch for over 1 second to enter beacon mode.
    ─ Repeat the same operation to cycle through “strobe-SOS-beacon”.
    ─To exit the special modes, simply tap the switch once to turn off the light and enter standby.

NOTE: When the product is not in use, always loosen the tail cap to prevent accidental activation.

Package Contents: Nitecore Concept 1 flashlight, holster, pocket clip, lanyard, spare O-ring, instruction manual and warranty card
Nitecore Concept 1 Overview

Average Rating: 4.5 of 5 Total Reviews: 10 Write a review »

  0 of 1 people found the following review helpful:
Concept 1 July 10, 2017
Reviewer: Randall from Goodlettsville , TN United States  
I just received the Concept 1 and it won't turn on.  I'm not to happy with it. Talked to customer service and tried the suggestions, still a no go.  I'm sending it back.

I got it back and all is good now. I can't say enough about how great customer support and service was for this light, it had a bad switch.

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  1 of 1 people found the following review helpful:
Concept 1 July 4, 2017
Reviewer: Gary J. from Huntington, IN United States  
Great service! Quick and accurate.

Love the light. It has great features and is exceptionally bright for its size. Only downgrade is the switch. Too easy to activate accidentally and it is a pain to unscrew the cap every time I put it in my pocket or the holster. It could use a different lock out mechanism. Otherwise I love it. Bought a second battery to have on hand.

Customer service is friendly, quick to respond, and knowledgeable. Please let me know if you ever redesign the switch. I would buy more as gifts.

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  0 of 0 people found the following review helpful:
Weapon light June 26, 2017
Reviewer: Kent Gray from Long Beach, CA United States  
Very easy use very bright and lightweight I only use nitecore on my weapons ,  never a failure  and unbelievably bright .   Will continue to use night core  flashlights !!

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  0 of 0 people found the following review helpful:
Concept 1 June 25, 2017
Reviewer: Dan Christian Bartolome from Anaheim, CA United States  
i love using this flashlight! So handy and yet super bright!

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  0 of 0 people found the following review helpful:
Concept 1 June 21, 2017
Reviewer: Brian Teske from Hot Springs, AR United States  
Small for the size of output that it does. Nice spacing between lms. Like the side button, easy to reach for. Overall a nice light.

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