Introduction
The NICRON B11 Pro is a compact, high-brightness tactical flashlight designed for everyday carry and various outdoor activities. Featuring 2000 lumens, multiple lighting modes, and a durable, water-resistant design, it offers reliable illumination for diverse needs.

Image: NICRON B11 Pro Mini Tactical Flashlight highlighting its 2000 lumens output, 120 hours max runtime, 200-meter beam distance, and IPX7 waterproof rating.
Package Contents
Verify that all items listed below are included in your package:
- NICRON B11 Pro Flashlight x 1
- Rechargeable 18350 Li-ion Battery x 1
- USB-C Charging Cable x 1
- Additional Extensive Tube x 1 (for 18650 battery compatibility)
- User Manual x 1
Text: The package includes the NICRON B11 Pro flashlight, a rechargeable 18350 battery, a USB-C charging cable, an extension tube for 18650 battery use, and this user manual.
Setup
Battery Installation
The B11 Pro flashlight is designed for dual fuel compatibility, primarily using an 18350 rechargeable battery (included). It can also accommodate a larger 18650 rechargeable battery with the included extensive tube.
- Unscrew the tail cap of the flashlight.
- Insert the 18350 battery with the positive (+) end facing towards the flashlight head.
- If using an 18650 battery, first screw on the extensive tube to the flashlight body, then insert the 18650 battery with the positive (+) end facing towards the flashlight head.
- Screw the tail cap back on securely.

Image: Illustration of dual fuel capability, showing the flashlight with an 18350 battery and an extended version for an 18650 battery, along with estimated run times.
Charging the Battery
The flashlight features a USB-C charging port for convenient recharging of the internal battery.
- Locate the USB-C charging port on the flashlight body.
- Connect the provided USB-C cable to the flashlight and a suitable USB power source (e.g., wall adapter, computer, power bank).
- The LED indicator will flash during charging.
- When the LED stops flashing, the battery is fully charged.

Image: Detailed view of the Type-C charging port on the flashlight and the charging indicator behavior.
Operation
The NICRON B11 Pro features two control buttons: a power button and a mode selection button.
Text: The flashlight features two distinct buttons for power and mode selection, located on the body.
Power On/Off
- Press the power button (marked with a circle and vertical line) to turn the flashlight on or off.
Mode Selection
The flashlight offers six lighting modes: Low, Medium, High, Moonlight, Max, and Strobe. It also features a memory function, returning to the last used mode when turned on again.
- With the flashlight on, press the mode selection button (marked with three vertical lines) to cycle through Low, Medium, High, Moonlight, and Max modes.
- To activate Strobe mode, quickly double-press the mode selection button.
Lock Mode
To prevent accidental activation and conserve battery, the flashlight includes a lock mode.
- To enter lock mode: Press and hold the power button for 5 seconds.
- To exit lock mode: Press and hold the power button for 5 seconds again.
Mounting Options
The NICRON B11 Pro is designed for versatile hands-free use.
Magnetic Tail Cap
The strong magnetic tail cap allows the flashlight to be securely attached to any ferrous metal surface, providing convenient area lighting.

Image: The flashlight demonstrating its strong magnetic tail cap, adhering to a metal surface for hands-free operation.
Dual Clip
The integrated dual clip offers multiple carrying and mounting possibilities.
- Belt Clip: Attach the flashlight to your belt or pocket for easy access.
- Cap Light: Clip the flashlight to the brim of a cap to convert it into a headlamp for hands-free illumination.

Image: The NICRON B11 Pro flashlight showcasing its dual clip, suitable for attaching to clothing or a cap.
Durability and Water Resistance
The NICRON B11 Pro is built with an IP67 waterproof rating, ensuring protection against dust and immersion in water up to 1 meter for 30 minutes. This makes it suitable for use in various outdoor conditions, including rain.
Text: The flashlight features IP67 water resistance, protecting it from water immersion and making it suitable for outdoor use.
Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Lubrication: Periodically apply silicone grease to the O-rings and threads to maintain water resistance and smooth operation.
- Battery Care: Store the flashlight with a partially charged battery if not used for extended periods. Recharge the battery every 3-6 months to prolong its lifespan.
- Storage: Store in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Battery is dead or incorrectly inserted. Flashlight is in lock mode. | Recharge or reinsert battery. Ensure positive (+) end faces forward. Exit lock mode by holding the power button for 5 seconds. |
| Light output is dim. | Low battery charge. Lens is dirty. | Recharge the battery. Clean the lens with a soft cloth. |
| Flashlight flickers. | Loose connections. Low battery. | Tighten all parts, especially the tail cap. Recharge the battery. |
| Water ingress. | O-rings are damaged or not properly seated. Tail cap not tightened. | Check and replace O-rings if damaged. Ensure all parts are tightly screwed. |
Specifications
Detailed technical specifications for the NICRON B11 Pro flashlight.
| Feature | Detail |
|---|---|
| Model | B11 Pro |
| Brightness | Up to 2000 Lumens |
| Modes | Low/Medium/High/Moonlight/Max/Strobe |
| Battery Type | 1x 18350 (included), compatible with 1x 18650 (with extension tube) |
| Charging Port | USB-C |
| Water Resistance | IP67 (Waterproof) |
| Dimensions | 3.33 x 0.78 x 0.78 inches (without extension) |
| Weight | 1.94 oz (55g) without battery |
| Mounting | Magnetic Tail Cap, Dual Clip |

Image: Comprehensive technical data table detailing performance metrics for different battery types and modes.

Image: Visual representation of the flashlight's dimensions and weight, emphasizing its compact design.
Safety Information
- Do not shine the flashlight directly into eyes.
- Keep out of reach of children.
- Do not disassemble the flashlight head or tail cap unless for battery replacement or maintenance.
- Use only recommended batteries and charging cables.
- Avoid exposing the flashlight to extreme temperatures or direct flame.
Warranty and Support
For warranty information or technical support, please refer to the official NICRON website or contact your retailer. Keep your purchase receipt for warranty claims.




