1. Introducción
Gracias por la compraasing the Sofirn SC18 Rechargeable Flashlight. This compact and powerful EDC (Everyday Carry) flashlight is designed for various applications, offering high brightness, convenient USB-C charging, and durable construction. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Información de seguridad
- Seguridad ocular: Do not shine the flashlight directly into eyes or at other people. The high lumen output can cause temporary vision impairment.
- Niños: Mantener fuera del alcance de los niños para evitar la activación accidental o mal uso.
- Calor: The flashlight head may become hot during prolonged use at high brightness levels. Exercise caution to avoid burns.
- Seguridad de la batería: Use only the recommended rechargeable battery. Do not disassemble, crush, or expose the battery to extreme temperatures or fire.
- Desmontaje: Do not disassemble the flashlight head as this may damage the light and void the warranty.
3. Contenido del paquete
Verifique que todos los artículos estén presentes en su paquete:
- Linterna Sofirn SC18
- Batería recargable (preinstalada o separada)
- Cable de carga USB-C
- Acollador
- Manual de usuario

Image: The Sofirn SC18 flashlight shown with its included accessories, typically a USB-C cable, lanyard, and battery.
4. Configuración
4.1 Instalación de la batería
The Sofirn SC18 typically comes with the battery pre-installed. If not, unscrew the tail cap, insert the 18650 rechargeable battery with the positive (+) end facing towards the head of the flashlight, and then screw the tail cap back on tightly.
4.2 Carga inicial
Before first use, fully charge the flashlight. The SC18 features a built-in USB-C charging port.
- Locate the rubber cover on the side of the flashlight head.
- Gently pull open the rubber cover to expose the USB-C port.
- Connect the provided USB-C cable to the flashlight and plug the other end into a USB power source (e.g., phone charger, power bank, computer USB port).
- La luz indicadora en el interruptor lateral mostrará el estado de carga:
- Rojo: Cargando
- Verde: Completamente cargado
- Once charging is complete, disconnect the cable and firmly close the rubber cover to maintain water resistance.

Image: The Sofirn SC18 flashlight with its USB-C port exposed and connected to a charging cable, illustrating the charging process and battery indicator.
5. Instrucciones de funcionamiento
The Sofirn SC18 uses a single side switch for all operations.
5.1 Funcionamiento básico
- Encender/Apagar: Haga clic una vez en el interruptor lateral para encender o apagar la luz.
- Cambiar los modos de brillo: While the light is on, press and hold the side switch to cycle through Moon, Low, Medium, and High modes. Release the switch to select the desired mode. The flashlight has a Smart Memory function and will turn on at the last used brightness level (except Turbo and Strobe).

Image: A person holding the Sofirn SC18 flashlight, illuminating a dark path with its powerful 1800 lumen beam, demonstrating its effective beam distance.
5.2 Modos Especiales
- Modo de luz de luna: Desde APAGADO, mantenga presionado el interruptor lateral durante 1 segundo para activar el modo Luz de luna.
- Modo Turbo: Double-click the side switch from any state (ON or OFF) to activate Turbo mode. Double-click again to return to the previously used mode.
- Modo estroboscópico: Triple-click the side switch from any state (ON or OFF) to activate Strobe mode. Single click to turn off or double-click to return to the previously used mode.
5.3 Función de bloqueo
The lockout function prevents accidental activation, which is useful when carrying the flashlight in a pocket or bag.
- Activar bloqueo: From OFF, quadruple-click the side switch. The main LED will flash twice to indicate lockout is active.
- Desactivar bloqueo: Quadruple-click the side switch again. The main LED will flash twice, and the flashlight will turn on in Moonlight mode, indicating lockout is deactivated.

Image: An illustration of the Sofirn SC18 flashlight with a protective shield graphic, demonstrating the safety lock mode feature to prevent accidental activation.
6. Mantenimiento
6.1 Limpieza
Limpie el cuerpo de la linterna con un paño suave.amp cloth. Do not use abrasive cleaners or solvents. Keep the threads and O-rings clean and lubricated with silicone grease to ensure smooth operation and water resistance.
6.2 Resistencia al agua
The Sofirn SC18 is rated IP68 waterproof, meaning it is protected against dust ingress and can withstand immersion in water up to 2 meters for 30 minutes. Ensure the USB-C port cover is fully sealed before exposing the flashlight to water.

Image: The Sofirn SC18 flashlight shown in two scenarios: one being splashed with water and another on wet rocks, highlighting its IP68 waterproof and drop-resistant design.
6.3 Cuidado de la batería
To prolong battery life, charge the battery regularly and avoid fully discharging it. If the flashlight will not be used for an extended period, remove the battery or activate the lockout function to prevent parasitic drain.
7. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| La linterna no se enciende. | La batería está muerta o insertada incorrectamente. La linterna está en modo de bloqueo. | Charge the battery or reinsert it with the correct polarity. Deactivate lockout mode (quadruple-click). |
| La luz parpadea o se apaga inesperadamente. | Batería baja. Tapa o cabeza de cola suelta. Contactos sucios. | Recargar la batería. Apriete la tapa de la cola y la cabeza. Limpie los contactos y las roscas de la batería. |
| No se puede cargar la linterna. | Problema con el cable USB-C o la fuente de alimentación. Obstrucción del puerto de carga. | Pruebe con un cable USB-C o un adaptador de corriente diferente. Compruebe si hay residuos en el puerto de carga. |
8. Especificaciones
| Característica | Detalle |
|---|---|
| Modelo | SC18 |
| Fuente de luz | CONDUJO |
| Salida máxima | 1800 lúmenes |
| Distancia máxima del haz | 217 metros (712 pies) |
| Fuente de poder | 1 batería de iones de litio 18650 (incluida) |
| Cargando | USB-C recargable |
| Resistencia al agua | IP68 (sumergible hasta 2 metros) |
| Resistencia a caídas | 1 metros |
| Material | Aleación de aluminio |
| Dimensiones (L x P) | Approx. 10.14 cm x 2.46 cm (3.99" x 0.97") |
| Peso | Approx. 55g (1.94oz) without battery |

Image: The Sofirn SC18 flashlight displayed next to a smartphone, illustrating its compact size and dimensions (3.99 inches long, 0.97 inches diameter).
Brightness and Runtime Table
| Modo | Salida (lúmenes) | Tiempo de ejecución | Distancia del haz |
|---|---|---|---|
| Luz de la luna | 3 lm | 230 horas | 11 m |
| Bajo | 100 lm | 23 horas | 51 m |
| Medio | 350 lm | 6.3 horas | 97 m |
| Alto | 800 lm | 2.6 horas | 150 m |
| Turbo | 1800 lm | 2.3 horas | 217 m |
| Luz estroboscópica | 1800 lm | 5h | - |
Note: Runtimes are approximate and may vary based on environmental conditions and battery age.
9. Garantía y soporte
The Sofirn SC18 Rechargeable Flashlight comes with a Garantía del fabricante de 1 años from the date of purchase, covering defects in materials and workmanship. This warranty does not cover damage caused by misuse, unauthorized modifications, or normal wear and tear.
For warranty claims, technical support, or any questions regarding your product, please contact Sofirn customer service through the retailer where you purchased the product or visit the official Sofirn websitio para información de contacto.
Recursos en línea:
10. Vídeos de productos
Sofirn SC18 Product Overview
Video: An official product video from Sofirn showcasing the features and functionality of the SC18 flashlight, including its design, charging, and various light modes.