Indledning
This manual provides detailed instructions for the safe and efficient operation of your Nitecore NU25 400L Ultralight Rechargeable Headlamp. Please read this manual thoroughly before use to ensure proper functionality and to maximize the product's lifespan. The NU25 400L is designed for outdoor activities, offering multiple light sources and a lightweight design.
Pakkens indhold
- Nitecore NU25 400L Headlamp
- Built-in 650mAh Li-ion Battery (pre-installed)
- USB-C ladekabel
- Pandebånd
Produkt overview

Image: The Nitecore NU25 400L headlamp, featuring a compact black body with two main LED lenses and a smaller red LED. It is attached to a yellow and black elastic headband, designed for comfortable wear. The headband includes adjustable cords for a secure fit.
The Nitecore NU25 400L is an ultralight rechargeable headlamp equipped with dual beams (spotlight and floodlight) and a red light. It features a unibody optical lens system for uniform light distribution and is powered by a built-in 650mAh Li-ion battery, rechargeable via USB-C. Its compact and durable design makes it suitable for various outdoor activities.
Opsætning
1. Opladning af batteriet
- Find USB-C-opladningsporten på hovedtelefonenamp.
- Tilslut det medfølgende USB-C-kabel til hovedtelefonerneamp and a USB power source (e.g., wall adapter, computer, power bank).
- During charging, the four power indicators will flash to show the charging status. When fully charged, all four indicators will glow steadily.
- A full charge typically takes approximately 1 hour and 20 minutes.
2. Fastgørelse af pandebåndet
- Thread the elastic headband through the attachment points on the headlamp beslag.
- Adjust the length of the headband using the buckles to achieve a comfortable and secure fit around your head.
- The headband is designed to be dual-purpose, featuring reflective and glow-in-the-dark properties. It can also be detached for cleaning or to be used as a running headband.
Betjeningsvejledning
1. Power Button and Mode Button
The NU25 400L features two distinct buttons for operation: the Power Button (larger, raised) and the Mode Button (smaller, recessed). These buttons are designed for easy one-handed operation.
2. Tænd/sluk
- At tænde: Tryk og hold tænd/sluk-knappen nede i cirka 1 sekund.
- At slukke: Press and hold the Power Button for approximately 1 second while the light is on.
3. Brightness Levels and Light Source Selection
Overskriftenamp offers four brightness levels and three light sources (Spotlight, Floodlight, Red Light).
- White Light (Spotlight/Floodlight):
- When the light is on, short press the Mode Button to cycle through brightness levels: Low (Floodlight) → Medium (Floodlight) → High (Spotlight + Floodlight).
- To switch between Spotlight and Floodlight modes (when not in High), double-press the Power Button.
- Rødt lys:
- When the light is off, press and hold the Mode Button for approximately 1 second to directly access Red Light mode.
- While in Red Light mode, short press the Mode Button to cycle between Red Light Constant On → Red Light Slow Flash.
4. Special Modes (SOS, Location Beacon)
- When the light is off, double-press the Power Button to activate the SOS mode.
- While in SOS mode, short press the Mode Button to switch to Placering Beacon mode.
- To exit special modes, short press the Power Button.
5. Spærringstilstand
Lockout Mode prevents accidental activation of the headlamp, conserving battery life and preventing unintended light emission.
- To Activate Lockout Mode: When the light is off, press and hold both the Power Button and the Mode Button simultaneously for approximately 2 seconds until the headlamp blinker én gang.
- To Deactivate Lockout Mode: While in Lockout Mode, press and hold both buttons simultaneously for approximately 2 seconds until the headlamp flashes once and then turns on.
6. Strømindikation
Overskriftenamp features four power indicators to display the remaining battery level:
- 4 Indicators On: Approximately 75% - 100%
- 3 Indicators On: Approximately 50% - 75%
- 2 Indicators On: Approximately 25% - 50%
- 1 Indicator On: Below 25% (Recharge recommended)
Opretholdelse
- Rensning: Tør hovedet afamp krop med en blød, damp klæde. Undgå at bruge slibende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Opbevar hovedlamp in a cool, dry place away from direct sunlight. For long-term storage, it is recommended to fully charge the battery every three months to maintain battery health.
- Vandtæthed: The NU25 400L is rated IP66, meaning it is protected against dust ingress and powerful water jets. It is not designed for submersion.
Fejlfinding
- Headlamp tænder ikke:
- Check if the battery is charged. Connect to a USB-C power source to charge.
- Sørg for headlamp is not in Lockout Mode. Deactivate Lockout Mode as described in the Operating Instructions.
- Lysudbyttet er svagt:
- Batteriniveauet kan være lavt. Genoplad hovedtelefonerne.amp.
- Sørg for, at linsen er ren og fri for blokeringer.
- Opladningsproblem:
- Kontroller, at USB-C-kablet er korrekt tilsluttet til begge hovedtelefoneramp og strømkilden.
- Prøv et andet USB-C-kabel eller strømadapter.
Specifikationer
| Max output | 400 lumen |
| Maksimal stråleafstand | 64 meter |
| Maksimal stråleintensitet | 1029 cd |
| Max køretid | 45 timer |
| Batteri | Indbygget 650mAh Li-ion batteri |
| Særlige tilstande | Location Beacon, SOS |
| Strålefarve | White Light, Red Light |
| Dimensioner | 60.1 mm x 36.8 mm x 25 mm (2.37 "x 1.45" x 0.98 ") |
| Vægt | 56 g (1.98 oz) |
| Vandtæt vurdering | IP66 |
| Slagmodstand | 1 meter |
| Opladningsport | USB-C |
| Materiale | Durable PC Material |
Garanti og support
Nitecore products are covered by a warranty. For detailed warranty information, please refer to the official Nitecore website or contact your local distributor. If you encounter any issues or require technical assistance, please contact Nitecore customer support through their official channels.





