Introduction
This manual provides comprehensive instructions for the safe and effective use of your ThruNite TH01 1500 Lumen Rechargeable LED Headlamp. Please read this manual thoroughly before operating the device and retain it for future reference.
Safety Information
- Always read and understand all instructions before using the headlamp.
- Do not shine the light directly into eyes. The intense beam can cause temporary vision impairment or permanent eye damage.
- Keep the headlamp out of reach of children.
- Use only the specified 18350 rechargeable battery. Using incompatible batteries may cause damage or safety hazards.
- Do not disassemble or modify the headlamp, as this may void the warranty and create safety risks.
- Avoid exposing the headlamp to extreme temperatures or direct sunlight for prolonged periods.
Product Components
The ThruNite TH01 headlamp package includes the following components:
- ThruNite TH01 Headlamp Unit
- Adjustable Head Strap
- ThruNite 18350 1100mAh Rechargeable Battery
- Micro USB Charging Cable
- Spare O-rings
- Spare USB Port Cover

Image: ThruNite TH01 headlamp and its included accessories.
Setup
1. Battery Installation
- Unscrew the tail cap of the headlamp unit.
- Insert the included ThruNite 18350 battery with the positive (+) terminal facing towards the head of the lamp.
- Screw the tail cap back on tightly to ensure proper contact and water resistance.

Image: Close-up of the TH01 headlamp unit, illustrating the battery compartment ends.
2. Head Strap Attachment
- Thread the adjustable head strap through the mounting brackets on the headlamp unit.
- Adjust the strap to a comfortable and secure fit around your head.

Image: The TH01 headlamp fully assembled with its head strap.
Operating Instructions
1. Charging the Battery
The TH01 features a built-in Micro USB charging port for convenient recharging.
- Locate the Micro USB charging port on the headlamp unit, usually covered by a rubber flap.
- Open the rubber flap and connect the Micro USB cable to the port.
- Connect the other end of the USB cable to a power source (e.g., USB wall adapter, power bank, computer USB port).
- The indicator light will show charging status (e.g., red for charging, blue for fully charged).
- Once charging is complete, disconnect the cable and securely close the rubber flap to maintain water resistance.
2. Basic Operation
The TH01 uses a single button for all operations.
- Turn On/Off: Press and hold the switch for 0.5 seconds to turn the light on or off.
- Change Modes: When the light is on, single click the switch to cycle through Firefly, Low, Medium, and High modes.
- Turbo Mode: Double click the switch quickly from any mode (or off) to activate Turbo mode. Double click again to return to the previous mode.
- SOS Mode: Triple click the switch quickly from any mode (or off) to activate SOS mode. Single click to return to the previous mode.
- Memory Function: The headlamp will remember the last used mode (except Turbo, Firefly, and SOS) when turned off and on again.

Image: The TH01 headlamp in hand, highlighting the operational switch.

Image: The TH01 headlamp illuminating a dark surface.

Image: Beam shot of the TH01 headlamp demonstrating its wide illumination.
Maintenance
- Cleaning: Clean the headlamp with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- O-rings: Periodically check and lubricate the O-rings with silicone grease to maintain water resistance. Replace worn O-rings with the provided spares.
- Battery Care: If the headlamp will not be used for an extended period, remove the battery to prevent leakage. Store the battery in a cool, dry place.
- USB Port: Ensure the rubber cover for the USB charging port is securely closed when not charging to prevent dust and water ingress.

Image: The TH01 headlamp in a wet environment, highlighting its durable construction.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | Battery is dead or incorrectly inserted. | Charge the battery or re-insert it with the correct polarity. |
| Light is dim or flickers. | Low battery charge. Loose connections. | Recharge the battery. Ensure tail cap is tightened. |
| Headlamp does not charge. | Faulty USB cable or power source. USB port obstruction. | Try a different USB cable or power source. Check USB port for debris. |
| Water ingress. | Loose tail cap or worn O-rings. USB port cover not sealed. | Ensure all caps are tightened. Check and replace O-rings if necessary. Securely close USB port cover. |
Specifications
| Feature | Detail |
|---|---|
| LED | CREE XHP50 |
| Battery | 1 x ThruNite 18350 1100mAh (included) |
| Reflector | Orange Peel Reflector |
| Working Voltage | 2.7 - 4.2 V |
| Peak Beam Intensity | 4000 cd |
| Max Beam Distance | 126 meters (413 ft) |
| Impact Resistance | 1.5 meters |
| Water Resistance | IPX-8 Standard (submersible up to 2 meters) |
| Material | Aircraft-grade Aluminum |
| Weight | 51.88 g (1.83 Ounces) without battery |
| Dimensions | 9.9 x 7.7 x 7.7 cm (Package dimensions, actual product dimensions not specified but implied compact) |
Warranty and Support
For detailed warranty information, technical support, or service inquiries regarding your ThruNite TH01 headlamp, please visit the official ThruNite website or contact their customer service directly. Please have your product model and purchase date available when contacting support.