1. Pendahuluan
This manual provides detailed instructions for the Nitecore NU25 MCT UL 400 Lumen Ultralight USB-C Rechargeable Headlamp. Please read thoroughly before use to ensure proper operation and maintenance.
2. Isi Paket
The Nitecore NU25 MCT UL package includes:
- Nitecore NU25 MCT UL Headlamp
- Kabel Pengisi Daya USB-C ke USB-C
- Elastic Cord Headband (Black)
- Kantong Barang Penyebar
- Stiker Nitecore

3. Pengaturan dan Penggunaan Pertama
3.1. Mengisi Daya Headamp
The NU25 MCT UL features a built-in rechargeable Lithium Ion battery.
- Cari port pengisian daya USB-C di sisi headset.amp.
- Buka penutup pelindung port USB-C.
- Connect the included USB-C charging cable to the headlamp and a power source (e.g., USB adapter, computer USB port).
- The power indicator lights will show charging status. A full charge typically takes approximately 1 hour.
- Once fully charged, disconnect the cable and securely close the protective cover to maintain water resistance.

3.2. Menyesuaikan Ikat Kepala
kepalaamp comes with an elastic cord headband for comfortable and secure fit.
- Tempatkan kepalalamp di kepala Anda.
- Adjust the elastic cord using the cord lock mechanism at the back to achieve a snug fit without being too tight.
- kepalaamp unit can be tilted up or down to direct the beam as needed.

4. Petunjuk Pengoperasian
The NU25 MCT UL features a dual-button interface for intuitive control.

4.1. Power On/Off & Brightness Adjustment (White Light)
- Untuk menghidupkan: Long press the Power button (larger button) for 2 seconds. The headlamp will turn on in the last used white light mode (or low neutral white by default).
- Untuk menyesuaikan kecerahan: While the white light is on, short press the Power button to cycle through Ultra Low, Low, Mid, and High brightness levels.
- Untuk mematikan: Tekan lama tombol Daya selama 2 detik.
4.2. Mengubah Suhu Warna
kepalaamp offers multiple color temperatures for the primary white light.
- While the white light is on, short press the Mode button (smaller button) to cycle through Warm White (3000K), Neutral White (4500K), and Cool White (6500K).

4.3. Mode Lampu Merah
The auxiliary red light is useful for preserving night vision and signaling.
- To turn on red light: Ketika kepalaamp is off, long press the Mode button for 2 seconds. It will turn on in Low Red.
- To adjust red light brightness/mode: While the red light is on, short press the Power button to cycle through Low Red, High Red, and Red Flashing.
- To turn off red light: Long press the Mode button for 2 seconds.

4.4. Special Modes (SOS, Beacon)
- To access special modes: Sedangkan kepalaamp is off, double press the Mode button. It will activate SOS mode.
- To cycle through special modes: While in SOS mode, short press the Power button to switch to Beacon mode.
- To exit special modes: Long press the Power button or Mode button for 2 seconds.
4.5. Fungsi Penguncian
To prevent accidental activation during transport or storage:
- Untuk mengunci: Ketika kepalaamp is off, simultaneously press and hold both the Power and Mode buttons for 2 seconds. The headlamp akan berkedip sekali untuk menunjukkan bahwa kunci telah terpasang.
- Untuk membuka kunci: Simultaneously press and hold both the Power and Mode buttons for 2 seconds. The headlamp will flash once and turn on in Ultra Low mode.
5. Fitur Utama
- Desain Ultra Ringan: Weighing only 1.65 oz (47g) with the elastic cord, designed for maximum comfort during extended use.
- Suhu Warna Ganda (MCT): Offers Warm (3000K), Neutral (4500K), and Cool (6500K) white light options to suit various environments and preferences.
- Keluaran Kecerahan Tinggi: Up to 400 lumens with a maximum beam distance of 144 yards.
- USB-C Isi Ulang: Integrated USB-C port for convenient and fast charging.
- Konstruksi Tahan Lama: Crafted from robust PC material, rated IP66 for water and dust resistance, and impact-resistant up to 1 meter.
- Lampu Merah Tambahan: Preserves night vision and provides signaling capabilities.
- Intuitive Dual-Button Interface: Easy operation for power, brightness, and mode selection.
- Indikator Daya: Built-in indicator displays battery status.


6. Spesifikasi Teknis
| Mode | Keluaran | Waktu berjalan | Jarak Pancaran | Intensitas Sinar Puncak Pe |
|---|---|---|---|---|
| Primary Light (Neutral White / Warm Light / Cool Light) | ||||
| Tinggi | 400 lumen cahaya | 2 jam 40 menit | 132m | 4381cd |
| Pertengahan | 200 lumen cahaya | 5h | 94m | 2192cd |
| Rendah | 60 lumen cahaya | tahun 13 | 51m | 662cd |
| Sangat Rendah | 6 lumen cahaya | tahun 45 | 13m | 43cd |
| Lampu Merah Bantu | ||||
| Tinggi | 15 lumen cahaya | tahun 10 | -- | -- |
| Rendah | 7 lumen cahaya | tahun 26 | -- | -- |
| Berkedip Lambat | 15 lumen cahaya | -- | -- | -- |
| Mode Khusus | ||||
| SOS | 400 lumen cahaya | -- | -- | -- |
| Suar | 400 lumen cahaya | -- | -- | -- |
| Tahan Benturan | 1m | |||
| Tahan Air | Tingkat IP66 | |||
Note: Stated data is measured using the built-in 700mAh Li-ion battery (3.85V) in accordance with international flashlight testing standards ANSI/PLATO FL 1-2019 at an ambient temperature of 22°C (72°F) from the NITECORE Lab. The data may vary in real-world use due to different environmental conditions.
This product is equipped with a thermal protection function, which automatically regulates the output of the product according to the working condition to maintain optimal performance.

7. Perawatan dan Pemeliharaan
- Bersihkan kepalalamp tubuh dengan lembut, damp kain. Hindari bahan yang bersifat abrasif.
- Pastikan penutup port USB-C tertutup rapat saat tidak digunakan untuk mengisi daya agar tetap tahan air.
- Recharge the battery regularly, even if not in use, to prolong battery life. Avoid fully depleting the battery for extended periods.
- Simpan kepalalamp di tempat sejuk dan kering, terhindar dari sinar matahari langsung dan suhu ekstrem.
8. Penyelesaian masalah
- Kepalaamp tidak menyala:
- Check if the battery is charged. Connect to a USB-C power source.
- Ensure the lockout function is not activated (simultaneously press both buttons for 2 seconds to unlock).
- Light output is dim or inconsistent:
- The battery might be low; recharge the headlamp.
- kepalaamp may be in thermal regulation mode if it has been operating at high output for an extended period. Allow it to cool down.
- Kebocoran:
- Ensure the USB-C port cover is properly sealed. If water has entered, turn off the device immediately and allow it to dry completely before attempting to use it again. Contact customer support if issues persist.
9. Garansi dan Dukungan Pelanggan
The Nitecore NU25 MCT UL headlamp comes with a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included in your package or visit the official Nitecore weblokasi.
For technical support, service, or inquiries, please contact Nitecore customer service or your local distributor.
Manufacturer: Sysmax Innovation Co.