NICRON FLU-B11
NICRON B11 Rechargeable Flashlight User Manual
Model: FLU-B11
1. Introduction
Thank you for choosing the NICRON B11 High Performance Mini Rechargeable Flashlight. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device. Please read it thoroughly before use and retain it for future reference.
The NICRON B11 is a high-brightness, 950 Lumen tactical flashlight designed for reliability and durability, suitable for professional and daily use. It features a CREE XP-L HI V2 LED, a dimmable output switch, and convenient micro USB charging.
2. Product Overview and Features
The NICRON B11 is engineered for superior performance and convenience. Key features include:
- High Performance LED: Utilizes CREE XP-L HI V2 LED with a high-performance aluminum reflector.
- Brightness: Up to 950 Lumens output.
- Beam Distance: 167 Meter long beam distance.
- Operating Modes: 6 modes including Low, Med, High, Turbo, Strobe, and SOS.
- Smart Memory Switch: Remembers the last operating mode used.
- Rechargeable Battery: Includes a 18350 Li-Ion 900mAh battery.
- Micro USB Charging: Inbuilt micro USB charging port for convenience.
- Durability: Patented scratch-resistant anodized finish, strong aluminum body.
- Waterproof & Dustproof: IP67 rated, ensuring protection against water and dust.
- Drop Resistant: 1-meter drop resistant.
- Versatile Clip: Double-way clip with tail standing capability for hands-free operation.






3. Setup
3.1. Initial Charging
Before first use, fully charge the NICRON B11 flashlight. The device comes with a pre-installed 18350 Li-Ion 900mAh battery.
- Locate the micro USB charging port on the flashlight body.
- Connect the provided USB cable to the flashlight's micro USB port.
- Connect the other end of the USB cable to a standard USB power source (e.g., computer USB port, USB wall adapter).
- The indicator light will show charging status (refer to the flashlight's specific indicator behavior, typically red for charging, green for fully charged).
- Allow the flashlight to charge until the indicator shows a full charge. A full charge typically takes approximately 4 hours (without batteries).

3.2. Attaching the Clip
The NICRON B11 features a double-way clip for versatile carrying and hands-free use. The clip can be attached or re-positioned as desired along the body of the flashlight.
4. Operating Instructions
The NICRON B11 is designed for intuitive operation with its smart double switch system.
4.1. Power On/Off
- To Turn On: Press the power button (typically the larger, more prominent button).
- To Turn Off: Press and hold the power button for approximately 1 second.
4.2. Changing Modes
The B11 offers six operating modes: Low, Med, High, Turbo, Strobe, and SOS. It also features a smart memory function that recalls the last used mode.
- To Cycle Through Brightness Modes (Low, Med, High, Turbo): While the flashlight is on, short press the mode button (typically the smaller button next to the power button) to cycle through the brightness levels.
- To Activate Strobe Mode: Double-click the mode button rapidly.
- To Activate SOS Mode: From Strobe mode, double-click the mode button again, or triple-click the mode button from any brightness mode.
- Memory Function: The flashlight will automatically remember the last brightness mode (Low, Med, High, Turbo) used when turned off and will return to that mode when turned back on. Strobe and SOS modes are not typically remembered.
4.3. Battery Level Indicator
The flashlight may feature a battery level indicator (often integrated into the switch button) to show the remaining power. Consult the product packaging or specific product details for exact indicator behavior (e.g., green for full, red for low).
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your NICRON B11 flashlight.
5.1. Cleaning
- Wipe the flashlight body with a clean, soft cloth.
- For stubborn dirt, use a slightly damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Keep the lens clean for maximum light output. Use a lens cleaning cloth if necessary.
5.2. Battery Care
- Recharge the battery regularly, especially if the flashlight is not used for extended periods, to maintain battery health.
- Avoid fully discharging the battery frequently, as this can reduce its lifespan.
- Store the flashlight in a cool, dry place when not in use.
5.3. O-Ring Lubrication
To maintain the IP67 waterproof rating, periodically inspect and lubricate the O-rings (if accessible, typically around the tail cap or head). Use silicone grease designed for O-rings.
6. Troubleshooting
If you encounter issues with your NICRON B11, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Battery is depleted. | Charge the battery fully. |
| Flashlight turns on but is dim. | Low battery level. | Recharge the battery. |
| Modes are not changing. | Incorrect button press. | Refer to Section 4.2 for correct mode changing procedures. Ensure short presses for brightness, double/triple clicks for Strobe/SOS. |
| Charging indicator not working. | Faulty USB cable or power source. | Try a different USB cable or power source. Ensure the cable is fully inserted. |
If the problem persists after trying these solutions, please contact NICRON customer support.
7. Specifications
Detailed technical specifications for the NICRON B11 flashlight:
| Feature | Detail |
|---|---|
| Model Number | FLU-B11 |
| Brand | NICRON |
| Light Source | CREE XP-L HI V2 LED |
| Brightness | 950 Lumens (Max) |
| Beam Distance | 167 meters |
| Power Source | Battery Powered |
| Battery Type | 18350 Li-Ion 900mAh (Included) |
| Charging Port | Micro USB |
| Runtime | Up to 6 hours (depending on mode) |
| Material | Aluminium |
| Color | Black |
| Water Resistance | IP67 (Waterproof) |
| Drop Resistance | 1 meter |
| Special Feature | Portable, Smart Memory Switch, Double-Way Clip |
| Included Components | Flashlight, 18350 900mAh Battery, USB Cable |

8. Warranty and Support
8.1. Manufacturer Warranty
The NICRON B11 flashlight comes with a 1-year Manufacturer Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
Please retain your proof of purchase for warranty claims.
8.2. Customer Support
For technical assistance, warranty claims, or any questions regarding your NICRON B11 flashlight, please contact NICRON customer support through the retailer where you purchased the product or visit the official NICRON website for contact information.
Website: www.nicron.com
Email: support@nicron.com
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