1. Introduction
Thank you for choosing the Alonefire SV56 30W UV 395nm LED Rechargeable Flashlight. This powerful ultraviolet flashlight is designed for a variety of professional and personal applications, including the detection of invisible stains, verification of currency, identification of minerals, and more. This manual provides essential information for the safe and effective use of your device. Please read it thoroughly before operation and retain it for future reference.
2. Product Overview
2.1 Key Features
- High-Quality 395nm UV LED: Utilizes a six-core 395nm UV LED light source, delivering an impressive 30W power consumption and 4800mW light output for professional applications.
- Durable Construction: The housing is made of high-quality aluminum alloy, significantly enhancing its heat dissipation performance for reliable and durable operation.
- USB Rechargeable: Includes an MC2 charger with a charging indicator, supports USB charging, and can charge 2 rechargeable batteries simultaneously. Two rechargeable batteries are provided.
- UV Protection Glasses: UV400 protective glasses are included and highly recommended for use when operating the flashlight due to its powerful UV output.
- Multifunctional Applications: Effective for revealing stains or fluids invisible to the naked eye, detecting counterfeit documents, verifying currency, identifying amber and jewelry, and detecting pet urine and stains.
2.2 Components
Familiarize yourself with the main components of your Alonefire SV56 UV Flashlight:



3. Setup
3.1 Battery Installation
- Unscrew the tail cap of the flashlight.
- Insert the two provided Lithium-ion rechargeable batteries according to the polarity markings (+/-) inside the battery compartment. Ensure the positive (+) end faces towards the flashlight head.
- Screw the tail cap back on securely.
3.2 Initial Charge
Before first use, it is recommended to fully charge the batteries. Refer to Section 5 for detailed charging instructions.
4. Operating Instructions
4.1 Power On/Off
- To turn the flashlight ON, press the power switch located on the tail cap.
- To turn the flashlight OFF, press the power switch again.
4.2 Usage Guidelines
- Always wear the provided UV400 protection glasses when operating the flashlight to protect your eyes from harmful UV radiation.
- Direct the UV light towards the area you wish to inspect. Invisible stains, fluids, or specific materials will fluoresce under the UV light.
- For best results, use the flashlight in a dimly lit or dark environment.

4.3 Applications
The Alonefire SV56 UV flashlight is suitable for a wide range of applications:
- Pet Stain Detection: Locate hidden pet urine and other biological stains on carpets, furniture, and floors.
- Currency and Document Verification: Identify security features on banknotes, passports, and other official documents.
- Mineral and Gemstone Identification: Observe fluorescence in various minerals, amber, and certain gemstones.
- Scorpion Hunting: Scorpions glow brightly under UV light, making them easy to spot in dark environments.
- Resin Curing: Can be used for small-scale UV resin curing applications.
- Leak Detection: Detect automotive fluid leaks when a UV additive is present.

5. Charging Instructions
Your Alonefire SV56 UV flashlight comes with an MC2 dual-slot USB charger and two rechargeable Lithium-ion batteries.
- Remove the batteries from the flashlight.
- Insert the batteries into the MC2 charger slots, ensuring correct polarity.
- Connect the MC2 charger to a USB power source (e.g., computer, wall adapter, power bank) using the provided USB cable.
- The charging indicator lights on the charger will show the charging status. Typically, a red light indicates charging, and a green light indicates fully charged.
- Once fully charged, disconnect the charger from the power source and remove the batteries.

6. Safety Precautions
- Eye Protection: Always wear the provided UV400 protection glasses when using the flashlight. Direct exposure to powerful UV light can cause eye damage.
- Skin Exposure: Avoid prolonged direct exposure of skin to UV light.
- Children: Keep the flashlight out of reach of children. This is not a toy.
- Heat: The flashlight head may become warm during extended use due to its powerful output. This is normal.
- Water Resistance: This flashlight is NOT waterproof. Avoid exposing it to water or high humidity.
- Battery Safety: Use only the recommended Lithium-ion batteries. Do not mix old and new batteries, or different types of batteries. Do not attempt to disassemble or short-circuit batteries.
7. Maintenance
- Cleaning: Wipe the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Lens Care: Gently clean the lens with a lens cleaning cloth to maintain optimal light output.
- Storage: Store the flashlight in a cool, dry place when not in use. For long-term storage, remove the batteries.
- Battery Life: Recharge batteries regularly to maintain their lifespan, even if not frequently used.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Dead batteries. Incorrect battery installation. Loose tail cap. | Recharge or replace batteries. Check battery polarity. Tighten tail cap. |
| Light is dim or flickers. | Low battery charge. Loose connections. | Recharge batteries. Ensure batteries are properly seated and tail cap is tight. |
| Charger indicator not working. | No power to charger. Batteries not inserted correctly. | Check USB connection and power source. Reinsert batteries, ensuring correct polarity. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | ALONEFIRE |
| Model Number | SV56 395nm |
| Light Source Type | LED (6 bulbs) |
| UV Wavelength | 395nm |
| Wattage | 30 Watts |
| Power Source | Battery Powered |
| Battery Type | 2 x Lithium-ion (rechargeable, included) |
| Special Features | USB Rechargeable, Ultraviolet |
| Material | Aluminum |
| Color | Black |
| Water Resistance Level | Not waterproof |
| Item Shape | Round |
| Package Dimensions | 26.3 x 9.1 x 6.7 cm |
| Item Weight | 440 grams |
10. Warranty and Support
Warranty information for this product is not available in the provided data. For support or warranty inquiries, please contact the retailer or manufacturer directly.