Free English NITECORE NU20 CLASSIC (01) PDF document. Download the PDF, use the online viewer, or browse the FAQs for easy troubleshooting.
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What are the main beam outputs and runtimes for the NITECORE NU20 CLASSIC?
The NITECORE NU20 CLASSIC has the following main beam outputs and runtimes:
Turbo: 360 Lumens for 2h 30min
High: 210 Lumens for 5h
Medium: 75 Lumens for 11h
Low: 1 Lumen for 170h
What are the auxiliary beam outputs and runtimes for the NITECORE NU20 CLASSIC?
The NITECORE NU20 CLASSIC has the following auxiliary beam outputs and runtimes:
Warm White High: 35 Lumens for 15h
Warm White Low: 1 Lumen for 100h
Red Light: 50 Lumens for 13h
Slow Flashing Red Light: 50 Lumens for 30h
What is the beam distance for the NITECORE NU20 CLASSIC?
The beam distance for the NITECORE NU20 CLASSIC is 100 meters.
What is the beam intensity for the NITECORE NU20 CLASSIC?
The beam intensity for the NITECORE NU20 CLASSIC is 2500cd.
What is the impact resistance rating for the NITECORE NU20 CLASSIC?
The impact resistance rating for the NITECORE NU20 CLASSIC is 1.5 meters.
What is the waterproof rating for the NITECORE NU20 CLASSIC?
The waterproof rating for the NITECORE NU20 CLASSIC is IP67 rated (submersible up to 1 meter).
What are the dimensions of the NITECORE NU20 CLASSIC?
The dimensions of the NITECORE NU20 CLASSIC are 52mm x 28.6mm x 28.9mm (2.05in x 1.13in x 1.14in).
What is the weight of the NITECORE NU20 CLASSIC?
The weight of the NITECORE NU20 CLASSIC is 52g (1.83oz) including the battery.
What type of battery is used in the NITECORE NU20 CLASSIC?
The NITECORE NU20 CLASSIC uses a built in 1800mAh rechargeable Li-ion battery.
How do I turn on and off the NITECORE NU20 CLASSIC?
Press the power button once to turn on the NITECORE NU20 CLASSIC. Press the power button once again to turn it off.
How do I cycle through the main beam modes on the NITECORE NU20 CLASSIC?
When the NITECORE NU20 CLASSIC is on, long press the power button to cycle between the modes in the order of Turbo -> High -> Medium -> Low.
How do I access the Turbo mode directly from OFF mode on the NITECORE NU20 CLASSIC?
While the NITECORE NU20 CLASSIC is off, double press the power button quickly to directly access Turbo mode.
How do I access the Auxiliary White Light on the NITECORE NU20 CLASSIC?
When the NITECORE NU20 CLASSIC is off, long press the power button to access the Auxiliary White Light mode. To cycle between Warm White High and Warm White Low, long press the power button again.
How do I access the Red Light mode on the NITECORE NU20 CLASSIC?
When the NITECORE NU20 CLASSIC is off, press the power button three times quickly to access the Red Light mode. To cycle between Red Light and Slow Flashing Red Light, press the power button three times quickly again.
How do I turn off the NITECORE NU20 CLASSIC when using an Auxiliary Light mode?
When in any Auxiliary Light mode (Warm White High, Warm White Low, Red Light, Slow Flashing Red Light), press and hold the power button for 1 second to turn the NITECORE NU20 CLASSIC off.
How do I check the remaining battery level of the NITECORE NU20 CLASSIC?
When the NITECORE NU20 CLASSIC is off, quickly press the power button once. The indicator light will flash to show the remaining battery level:
Table for Battery Level Indicator:
| Indicator Flashes | Battery Level |
|---|---|
| 4 flashes | 100% – 75% |
| 3 flashes | 75% – 50% |
| 2 flashes | 50% – 25% |
| 1 flash | 25% – 0% |
How do I charge the NITECORE NU20 CLASSIC?
To charge the NITECORE NU20 CLASSIC, connect the provided USB cable to the micro USB port on the headlamp and plug the other end into a USB power source.
The indicator light will flash slowly while charging.
Once fully charged, the indicator light will remain steady on.
A full charge takes approximately 3 hours.
What does it mean if the indicator light flashes rapidly while charging the NITECORE NU20 CLASSIC?
If the indicator light flashes rapidly while charging the NITECORE NU20 CLASSIC, it indicates that the battery is damaged or abnormal. Please stop using the product.
How should the NITECORE NU20 CLASSIC be stored if unused for a long period?
If the NITECORE NU20 CLASSIC is to be stored for a long period (more than 3 months), please ensure it is fully charged first. It is recommended to recharge it every 6 months.
What should I do if the NITECORE NU20 CLASSIC seems to have low output or fails to turn on?
If the NITECORE NU20 CLASSIC has low output or fails to turn on, this may be due to a low battery level. Please recharge the unit.
What is the brightness rating for the NITECORE NU20 CLASSIC in Lumens?
The maximum brightness output for the NITECORE NU20 CLASSIC is 360 Lumens in Turbo mode.
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