1. Introduction
The TOWILD BC05U3 is an ultra-bright LED bicycle front light designed for cycling enthusiasts. It features a compact size, a maximum luminance of 1100 lumens, and a beam distance of up to 235 meters. This versatile light incorporates USB charging and discharging technology, allowing it to function as a power bank for other devices. It is equipped with intelligent temperature control, low power warning, and is IPX-6 waterproof, ensuring a comfortable and safe riding experience in various conditions.

Key Features:
- USB Charging and Discharging Integration (Power Bank Function)
- Intelligent Temperature Control Technology
- Built-in 3400mAh 18650 Rechargeable Li-ion Battery
- Independent Control of Side Red Light
- Compact Size with High Lumen Output
- IPX-6 Waterproof Rating
2. Package Contents
Upon opening your TOWILD BC05U3 package, please ensure all the following items are present:
- TOWILD BC05U3 Bicycle Headlight
- Bike Bracket
- USB Charging Cable
- Discharging Connector
- User Manual

3. Setup
3.1 Mounting the Headlight
The BC05U3 is designed for handlebar mounting. Use the provided bike bracket to securely attach the headlight to your bicycle's handlebar. Ensure the light is firmly in place and adjusted to illuminate the path ahead effectively.

3.2 Charging the Headlight
Before first use, fully charge the headlight. The BC05U3 features a USB charging port. Connect the provided USB charging cable to the headlight's charging port and to a suitable USB power source (e.g., computer, wall adapter). The charging indicator will show the charging status.

4. Operation
The BC05U3 headlight is operated via a single switch button.

4.1 Power On/Off
- To Turn On/Off: Long press the switch button for 0.5 seconds.
4.2 Changing Lighting Modes
Once the light is on, single click the switch button to cycle through the main lighting modes:
- High (1000 lumens)
- Flashing (90 lumens)
- Low (180 lumens)
- Mid (400 lumens)
4.3 Strobe Mode
- To Activate Strobe: In any mode, long press the switch button for 2 seconds.
- To Exit Strobe: Single click the switch button to return to the previously used mode.
4.4 Side Red Light
The BC05U3 features an independent side red light for enhanced visibility.
- To Turn On Side Red Light: Double click the switch button.
- To Turn Off Side Red Light: Double click the switch button again.

4.5 Power Bank Function
The BC05U3 can be used to charge other USB-powered devices.
- To Use as Power Bank: Insert the discharging connector into the light's charging port, then connect your device via a USB cable. Charging will begin after 2 seconds.
- Discharge Current: Maximum discharge current is 1A.
- All lighting modes can be used while discharging.

5. Maintenance
- Waterproof Seal: To maintain the IPX-6 waterproof rating, always ensure the USB rubber cover is securely closed, especially before riding in wet conditions.
- Cleaning: Wipe the light with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the headlight in a cool, dry place when not in use.
- Battery Care: For optimal battery life, avoid fully depleting the battery frequently. Charge regularly.

6. Troubleshooting
- Light Dims on High Mode: The BC05U3 features intelligent temperature control. If the light becomes too hot, especially on high mode, it will automatically reduce its output to prevent overheating and ensure user comfort. This is normal operation.
- Low Power Warning: The light is equipped with a low power warning indicator. When the battery is low, the indicator will alert you to recharge the device.
- Charging Issues: Ensure the USB cable and discharging connector are properly inserted. Check the power source. The light has overcharge and over-discharge protection to safeguard the battery.
- Light Not Turning On: Ensure the battery is charged. Long press the switch button for 0.5 seconds to power on.

7. Specifications
| Feature | Detail |
|---|---|
| Model Number | BC05U3 |
| Max Lumens | 1100 Lumens |
| LED Type | CREE XM-L2 U3 (Cold White) |
| LED Lifespan | 50,000 hours |
| Battery | Built-in 1pc 3400mAh 18650 Rechargeable Li-ion Battery |
| Dimensions (L*D*Head) | 103.5mm * 26.5mm * 29mm |
| Net Weight | 126g |
| Waterproof Rating | IPX-6 |
| Material | Durable Aircraft-Grade Aluminum, Premium Type III Hard-Anodized Anti-Abrasive Finish |
| Lens | Toughened Glass Lens |
| Mounting Placement | Handlebar |
| Certifications | CE, FCC, RoHS |
Performance Table:
| Mode | Output | Runtime | Distance | Intensity |
|---|---|---|---|---|
| High | 1000 Lumens | 2h* | 235m | 12000 (Max) |
| Mid | 400 Lumens | 4h20min | - | - |
| Low | 180 Lumens | 10h | - | - |
| Flashing | 90 Lumens | 42h | - | - |
| Red Flashing | 1 Lumen | - | - | - |
| Strobe | 1000 Lumens | - | - | - |
*Runtime for High mode is an accumulated time due to intelligent temperature control, which may shift the light to a lower mode if temperature is too high.

8. User Tips
- Maximize Waterproofing: Always double-check that the USB rubber cover is fully sealed before exposing the light to rain or splashes to ensure its IPX-6 rating is maintained.
- Emergency Power: Utilize the power bank feature for quick emergency charges of your phone or GPS device during long rides.
- Temperature Management: Be aware that the light may automatically reduce brightness on its highest setting if it gets too hot. This is a safety feature to protect the device and ensure longevity.
- Visibility: Use the independent side red light in addition to the main beam for enhanced 360-degree visibility, especially in urban environments or when riding in groups.
9. Warranty and Support
For any questions, technical support, or warranty claims, please contact the manufacturer or your point of purchase. Keep your purchase receipt as proof of purchase.





