1. Introduction
This manual provides detailed instructions for the safe and effective use of your ThruNite T10 II EDC Flashlight. Please read this manual thoroughly before operating the device and retain it for future reference.
2. Product Overview
The ThruNite T10 II is a compact and lightweight Everyday Carry (EDC) flashlight designed for various indoor and outdoor activities. It features a magnetic tailcap for hands-free operation, multiple lighting modes, and is powered by either a 14500 or AA battery.

Image 1: ThruNite T10 II EDC Flashlight, showcasing its compact design and side switch.
3. Package Contents
Verify that all items are present in your package:
- 1 x ThruNite T10 II Flashlight
- 2 x Spare O-rings
- 1 x Pocket Clip

Image 2: Contents of the ThruNite T10 II package, including the flashlight, spare O-rings, and pocket clip.
4. Setup
4.1 Battery Installation
The ThruNite T10 II can be powered by one 14500 rechargeable battery or one AA battery (not included). For optimal performance and maximum output, a 14500 battery is recommended.
- Unscrew the head of the flashlight counter-clockwise to open the battery compartment.
- Insert the battery with the positive (+) end facing towards the head of the flashlight.
- Screw the head back on clockwise until it is securely tightened.
Note: Ensure correct battery polarity to prevent damage to the flashlight.
5. Operating Instructions
The ThruNite T10 II features a side switch for all operations.
- Turn On/Off: Single click the side switch to turn the light on or off.
- Firefly Mode: When the light is off, press and hold the switch to activate Firefly mode.
- Cycle Modes (Low/Medium): When the light is on, press and hold the switch to cycle through Low and Medium modes.
- High Mode: Double click the switch from any mode to activate High mode.
- Strobe Mode: Double click again from High mode to activate Strobe mode.
Note: The flashlight does not have mode memory and will always start in Medium mode when turned on with a single click, unless Firefly mode is activated by a long press from off. To reset the mode order to Medium, leave the light off for approximately 1.5 to 2 seconds.

Image 3: Visual guide to operating the ThruNite T10 II, showing the side switch and mode activation.
6. Features and Specifications
6.1 Key Features
- Compact and Lightweight: Designed for easy portability and everyday carry.
- Magnetic Tailcap: Allows for hands-free attachment to metal surfaces.
- Versatile Modes: Includes Firefly, Low, Medium, High, and Strobe modes for various lighting needs.
- Dual Battery Compatibility: Operates with either a 14500 or AA battery.
- High Output: Up to 550 lumens when powered by a 14500 battery.
- Durable Construction: Made from aluminum for robust performance.
- Water Resistance: IPX8 rated for protection against water immersion.
6.2 Specifications
| Attribute | Detail |
|---|---|
| Brand | ThruNite |
| Model | T10 II |
| Light Source | CREE XP-G2 LED |
| Max Output (14500) | 550 Lumens |
| Max Output (AA) | 160 Lumens |
| Power Source | 1x 14500 or 1x AA Battery |
| Material | Aluminum |
| Weight | 40 Grams (without battery) |
| Dimensions | Approximately 87mm (length) x 19mm (head diameter) |
| Water Resistance | IPX8 (submersible up to 2 meters) |

Image 4: The ThruNite T10 II demonstrating its 550 lumens output.

Image 5: The compact size of the ThruNite T10 II, showing its 87mm length and 19mm head diameter.

Image 6: The ThruNite T10 II demonstrating its IPX8 water resistance.

Image 7: The magnetic tailcap feature of the ThruNite T10 II, allowing for hands-free use.
7. Maintenance
- Cleaning: Regularly clean the threads and O-rings with a clean cloth.
- Lubrication: Apply silicone grease to the O-rings periodically to maintain water resistance.
- Battery Care: Remove batteries if the flashlight will not be used for an extended period to prevent leakage.
- Lens Care: Clean the lens with a soft, lint-free cloth. Avoid abrasive materials.
8. Troubleshooting
If your flashlight is not functioning correctly, please refer to the following common issues and solutions:
- Light does not turn on:
- Check if the battery is inserted correctly with the positive (+) end facing the head.
- Ensure the head is screwed on tightly.
- Replace the battery with a new or fully charged one.
- Light is dim or flickers:
- The battery may be low. Replace or recharge the battery.
- Clean the battery contacts and threads.
If the issue persists after trying these steps, please contact customer support.
9. Warranty and Support
ThruNite products are manufactured to high-quality standards. For warranty information or technical support, please visit the official ThruNite website or contact their customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.





