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  • Nitecore® NU20 USB Rechargeable Headlamp with UL headband
  • Nitecore® NU20 USB Rechargeable Headlamp with wide headband
  • Nitecore® NU20 USB Rechargeable Headlamp
  • Tilts down up to 52˚
  • Micro USB rechargeable
  • Nitecore® NU20 USB Rechargeable Headlamp
  • UL Headband Colors
  • Nitecore® NU20 UL Headband Only includes Mounting Bracket
  • Nitecore® NU20 USB Rechargeable Headlamp
  • Lightweight rechargeable headlamp
  • 4 Brightness Levels + 2 Rescue Modes
  • 100˚ wide-angle flood illumination
  • Constant current means no dizziness with prolonged use
  • Specifications
  • Micro USB rechargeable
  • Built-in Li-ion battery holds power equal to 3 AAA batteries
  • Over 500 charge-discharge cycles
  • Fully functional while charging
  • Built-in battery level indicator
  • Switch guard prevents accidentally turning on in your pack or pocket
  • Impact resistant to 1.5 m, waterproof to IPX7
  • Ultralight Frame
  • Adjustable headband
  • Features

Nitecore® NU20 USB Rechargeable Headlamp

  • Brightness up to 360 lumens, runtime up to 100 hours
  • 4 brightness levels + 2 rescue modes
  • Built-in, long-lasting Li-ion micro-USB rechargeable battery
  • Charge in the wild or on the go with a power bank battery
  • Compact & lightweight – 1.16 oz (32.9 g)
  • Exclusive UL headband


Nitecore® NU20 is a USB rechargeable headlamp with four brightness levels up to a bold 360 lumens plus two rescue modes and a runtime of up to 100 hours. It’s compact and lightweight at just 1.16 oz (32.9 g) with our exclusive UL headband, perfect for backpacking. Never worry about running out of juice or replacing batteries, just plug into a power bank battery to recharge.

NU20 has a micro-textured reflector providing 100˚ wide-angle flood illumination for outstanding night vision. The light tilts down up to 52˚ for reading or close-up work. And a switch guard prevents the light from accidentally turning on in your pack or pocket. The wide elastic headband is comfortable and highly adjustable to fit your head, hat, or helmet. Our optional UL headband reduces weight with full adjustability and functionality.

single button operates all functions for convenient one-handed control. The interface is quite simple. For low light, press once, wait 3 sec, then press again to turn off. For medium light, press twice, wait 3 sec, then press once to turn off. For high brightness, press three times, wait 3 sec, then press again to turn off. Alternatively, you can cycle from low>medium>high by pressing the switch repeatedly within 3 sec. To enter turbo mode, with the light turned on in any mode, hold the switch down for 1 sec, and press once to turn off.

You can also access two rescue modes, SOS and location beacon. SOS repeatedly flashes SOS in Morse code (. . . ––– . . .), while location beacon repeatedly flashes a single short flash. With the light turned off, press and hold the switch for 3 sec to enter SOS mode. Pressing the switch within 3 sec again will change to beacon mode. Press once to turn off.  

Mode Output (lumens)
Turn On Turn Off
Low 1 Press Once Wait 3 sec, Press Once
Medium 40 Press Twice Wait 3 sec, Press Once
High 220 Press Three Times Wait 3 sec, Press Once
Turbo 360 Light On, Press and Hold 1 sec Press Once
SOS 360 Press and Hold 3 sec Press Once
Beacon 360 Press and Hold 3 sec, Press Once Press Once


NU20 has a built-in, long-lasting 600 mAh Li-ion rechargeable battery that holds power equal to three AAA batteries yet is much more sustainable. An intelligent protective charging circuit and a Micro USB connection make it easy to recharge. Since you probably already carry a spare battery to charge your phone, there’s no need to worry about running out of power or replacing batteries, just plug into a power bank, wall charger, computer, or car (USB cable provided). The light maintains full functionality while charging.

To see how much battery power is left, with the light turned off, hold down the switch for 1 sec and release. The switch will flash 3 times if you have more than 50% power, 2 times if you’re below 50%, and 1 time if you’re below 10%. Plug it in and an indicator light lets you know when the charge is complete. It takes approximately 2 hours to fully charge the battery. A rubber cover protects the USB port from dirt and moisture.

Charging State Indicator Light
Charging Steady Red
Charging Complete Steady Green




Mode Output (lumens) Runtime (hours)
Low 1 100
Medium 40 7.75
High 220 6
Turbo 360 0.5
SOS 360
Beacon 360



LED Color TemperatureCool White, 6300K

Color Rendering Index (CRI)CRI ≥70

Beam Distance262 ft (80 m)

Peak Beam Intensity1600 cd

Battery: Built-in 600 mAh rechargeable Li-ion

Lighting Modes: Low/Medium/High/Turbo/SOS/Beacon

Beam Pattern: 100˚ wide-angle flood

Body: Polycarbonate, impact resistant

Tilt: 52˚

Switch: Top button, rubber

Charging Connection: Micro USB, rubber cover (USB cable provided)

Charging Time: 2 hours

Dimensions, Light (LxWxH): 2.19 x 1.25 x 0.84 in. (55.5 x 31.7 x 21.2 mm)

USB Cable Length: 3.3 ft (1 m)


   UL Headlamp Total: 1.16 oz (32.9 g) with built-in battery

   Wide Headlamp Total: 1.82 oz (51.7 g) with built-in battery

   Light with Mounting Bracket: 0.99 oz (28.1 g) with built-in battery

   UL Headband: 0.17 oz (4.8 g)

   Wide Headband: 0.83 oz (23.6 g)

   USB Cable: 0.77 oz (21.9 g)

Impact Resistance: 4.9 ft (1.5 m)

Waterproof Rating: IPX7, waterproof and submersible to 3.3 ft (1 m)


   1x Light with integrated USB rechargeable Li-ion battery

   1x Wide Headband, Black/Yellow

   1x Micro USB to USB charging cable

   Optional: 1x UL Headband, choice of colors*

   *Nitecore packaging will be opened to install UL headband prior to shipment. UL headband must be dismantled to install wide headband.


User Manual

Nitecore NU20 User Manual



  • Very bright light, to avoid eye injuries, DO NOT stare directly into the light and DO NOT shine the light directly into the eyes of others.
  • Keep away from children to avoid injury.
  • DO NOT use if battery is damaged to avoid fire or explosion.
  • Charge in or on a fire-proof surface to avoid possible injury. DO NOT charge unattended.
  • Charge only at temperatures between 32-113°F (0-45°C) to avoid permanent damage and possible fire or explosion during charging.
  • Recycle or dispose of properly according to local regulations at end of life, DO NOT dispose in fire or incinerator as battery may catch fire and explode.

In no event shall Litesmith, LLC be liable for any direct, indirect, punitive, incidental, or special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of its products.

Write your own product review

Showing reviews 1-10 of 12 | Next

  1. Perfect fit, comfortable & cut weight in half!  star rating

    Posted by Shawn on 25th May 2019

    After reading several through-hiking forums about the NU20, most of which recommended this product, I checked this light weight mod out. Surprisingly low price so I got two and have been absolutely amazed at the simplicity, yet quality of your design! I have only tested it on a couple short trips but it literally cut the weight of an already lightweight headlamp in half, is unexpectedly comfortable to wear and has held up great so far. Could not be happier. Great product, especially for the price and would recommend to anyone.

  2. Multifunctional, Bright, Comfortable  star rating

    Posted by Unknown on 19th May 2019

    Great headlamp. Decided to replace my old clunker, which was so heavy that I'd get headaches from extended use. No more migraines, for sure; the NU20 is perfect for camp, and its higher-lumen settings worked for the odd night-hiking.

    The lowest setting is best, though; just enough light to get around at night, and a long runtime. Doubt I'll have to recharge this one soon!

  3. Light and bright!  star rating

    Posted by Anthony on 18th Mar 2019

    This is the lightest and brightest headlamp I've ever seen and owned. I've only used it a couple times, so I can't speak very much on its durability, but it seems durable.

  4. meets all criteria  star rating

    Posted by David James on 18th Jan 2019

    Light arrived within the week. Rated a 4 because I haven't put it to the test yet, but based on performance out of box, meets or exceeds expectations on size, weight, lumens, durability, and ergonomics. If it holds up, it's a steal at below $50.00. Previously owned Princeton Tec and Petzl.

  5. Perfect Ultralight Headlamp  star rating

    Posted by Unknown on 23rd Oct 2018

    Until they make something better, if you want the lightest headlamp on the market, THIS IS THE ONE. Simple to use, you won't notice it in your pack.

  6. Impressive pc of gear  star rating

    Posted by Cory on 6th Sep 2018

    this light (with shock cord headband) replaced my Petzl E-lite in my ultralight pack. while the E-lite is slightly less weight (i think around 1/3 oz), the NU 20 more than makes up for it with it's features. firstly, the upgrade in lumens is night and day (literally). the NU 20 has amazing brightness, and i like the three different settings. The lowest setting is perfect for around camp so you don't blind others, yet it is enough to see what you are doing in your hands and right around you. The second feature of the NU 20 i love is that it is battery free. i carry an external battery pack with me for charging devices, and would rather not carry extra batteries for devices. Lastly, the adjustable shock cord headband is fantastic and surprisingly very comfy (much more so than the E Lite). I can't yet speak to durability, but so far this light has far exceeded my expectations. definitely worth picking one up.

  7. Perfect for me!  star rating

    Posted by Tandemrider on 26th Jun 2018

    I seared for a while for the perfect headlamp. The Nitecore NU20 fits the bill. I run in the early morning while it is still dark and I have to have a headlamp. I have many options as far as lumens to chose from. It's comfortable and light in weight. It's rechargeable so I don't have to deal with replacing batteries.

  8. Excellent UL Headlamp  star rating

    Posted by Unknown on 16th May 2018

    This headlamp is fantastic for the weight/price. It weighs the same as my Petzl e+LITE but is brighter than larger headlamps. The low (1 lumen mode) makes up for not having a red light and the high mode is more than bright enough for night hiking and running. Easy to recharge from a battery bank in the field. The Litesmith cord system works amazingly well and surprised me with the comfort, definitely recommended.

  9. If you found this...Buy it  star rating

    Posted by Digitalsmitty on 23rd Aug 2017

    This was an awesome upgrade from my Petzl e-lite. I feel like the only reason why you would be using this is because you haven't found this site. Shipping came super quick.

  10. Updated Review  star rating

    Posted by Marty Elliott on 14th Jul 2017

    Used this on overnight at San Jacinto Peak. This light is fantastic. The low beam is perfect inside your tent and the medium beam would be your "everyday" beam around camp or while night hiking. The turbo beam can be used when you want to burn the retina's out of any animal within a mile. I was a little concerned about the comfort level of the shock cord, however not an issue at all. This light can be worn with a baseball cap with the bill forward without blocking any of the forward beam. Charges extremely quick. Can not recommend this enough.

Showing reviews 1-10 of 12 | Next

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