1. Introduction
Thank you for choosing the Relybo XHM88 Professional LED Flashlight. This powerful and versatile flashlight is designed for various applications, including camping, hiking, emergency situations, and general household use. It features a high-performance XHM88 LED chip, USB-C recharging, a digital battery display, and multiple lighting modes. Please read this manual thoroughly before use to ensure optimal performance and safety.

Figure 1: Relybo XHM88 Professional LED Flashlight with included accessories.
2. Setup
2.1 Unboxing and Package Contents
Carefully unpack all items from the packaging. Ensure all components are present and undamaged. The package should contain:
- 1x Relybo A05 Powerful Flashlight
- 1x Rechargeable Battery (pre-installed or separate)
- 1x USB-C Charging Cable
- 1x Lanyard
- 1x Flashlight Holster
- 1x Mini UV Flashlight
- 1x User Manual
- 1x Gift Box
- 3x AAA Batteries (for emergency backup)
- 1x AAA Battery Holder
- 1x Plastic Tube (for battery adaptation)
2.2 Battery Installation
The main flashlight operates with a rechargeable lithium battery. For emergency backup, it can also use 3x AAA batteries with the provided holder and plastic tube.
- Unscrew the tail cap of the flashlight by turning it counter-clockwise.
- Insert the rechargeable battery with the positive (+) terminal facing towards the flashlight head.
- Alternatively, if using AAA batteries, place three AAA batteries into the AAA battery holder, insert the holder into the plastic tube, and then insert the assembly into the flashlight with the positive (+) end facing the head.
- Screw the tail cap back on clockwise until secure.

Figure 2: Internal components and battery placement diagram.
2.3 Initial Charging
Before first use, fully charge the flashlight's rechargeable battery.
- Locate the USB-C charging port on the flashlight body. It is usually covered by a rubber flap for protection.
- Open the rubber flap.
- Connect the provided USB-C cable to the flashlight's port.
- Connect the other end of the USB-C cable to a compatible USB power source (e.g., car charger, computer, power bank, wall adapter).
- The digital display on the flashlight will show the charging progress. Charge until the display indicates 100%.
- Once fully charged, disconnect the cable and securely close the rubber flap to maintain water resistance.

Figure 3: Connecting the USB-C charging cable to the flashlight.
3. Operation
3.1 Power On/Off and Mode Selection
The flashlight features 5 lighting modes: High, Medium, Low, Strobe, and SOS.
- To Power On: Press the power button once. The flashlight will turn on in the last used mode.
- To Cycle Modes: With the flashlight on, press the power button repeatedly to cycle through High → Medium → Low → Strobe → SOS.
- To Power Off: Press and hold the power button for 3 seconds from any mode.
3.2 Focus Adjustment (Spotlight/Floodlight)
The flashlight features an adjustable focus mechanism to switch between a wide floodlight beam and a concentrated spotlight beam.
- For Floodlight: Push the flashlight head forward (away from the body) to widen the beam, illuminating a larger area (e.g., 240 square meters).
- For Spotlight: Pull the flashlight head backward (towards the body) to narrow the beam, concentrating light on distant objects (e.g., up to 1525 meters).

Figure 4: Adjusting the flashlight head for floodlight or spotlight.
3.3 Digital Battery Level Indicator
The integrated LCD digital display shows the current battery percentage, allowing you to monitor power levels in real-time.

Figure 5: Digital display indicating battery charge level.
3.4 Power Bank Functionality
The Relybo XHM88 flashlight can also function as a power bank to charge other devices in emergencies.
- Open the rubber flap covering the USB output port (usually next to the USB-C input port).
- Connect your device's charging cable to the flashlight's USB output port.
- The flashlight will begin charging your device.
- Monitor the flashlight's battery display to ensure sufficient power remains for your needs.
- Once charging is complete, disconnect the cable and securely close the rubber flap.

Figure 6: Using the flashlight as a power bank to charge a mobile phone.
3.5 Mini UV Flashlight Operation
The included mini UV flashlight operates independently and is useful for detecting pet urine, minerals, or verifying currency.
- The mini UV flashlight typically has a tactical switch at its end. Press it to turn on/off.
- It may also feature a zoomable head for adjusting the UV beam.
- Operates on its own internal battery or AAA batteries, depending on the specific mini UV model.

Figure 7: Mini UV flashlight details and applications.
4. Maintenance
4.1 Charging Guidelines
To prolong battery life and ensure consistent performance:
- Always use the provided USB-C cable for charging.
- Avoid over-discharging the battery. Recharge when the battery level is low.
- Do not attempt to charge non-rechargeable AAA batteries if used as backup. This can be dangerous and cause damage. Only the main lithium battery is rechargeable.
- Ensure the charging port's rubber flap is closed when not charging to prevent dust and water ingress.
4.2 Cleaning and Storage
- Wipe the flashlight body with a soft, damp cloth to remove dirt or debris. Do not use abrasive cleaners or solvents.
- Ensure the flashlight is completely dry before storing.
- Store the flashlight in a cool, dry place, away from direct sunlight and extreme temperatures.
- If storing for extended periods, charge the battery to approximately 50-70% every 3-6 months to maintain battery health.
4.3 Durability and Water Resistance
The Relybo XHM88 flashlight is constructed from durable aircraft-grade aluminum, making it resistant to impacts and scratches. It features an integrated waterproof rubber ring, providing resistance against rain and snow (IPX5 rated).

Figure 8: Flashlight's robust construction and water resistance.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Flashlight does not turn on. | Low battery; improperly installed battery; loose tail cap. | Charge the battery; ensure battery is inserted correctly with positive (+) end towards the head; tighten the tail cap. |
| Light is dim or flickers. | Low battery; dirty contacts; faulty battery. | Recharge the battery; clean battery contacts with a clean cloth; replace battery if necessary. |
| Cannot charge the flashlight. | Faulty USB cable; power source issue; charging port obstruction. | Try a different USB-C cable; use a different power source; check charging port for debris. |
| Power bank function not working. | Flashlight battery too low; device cable issue. | Ensure flashlight has sufficient charge; try a different charging cable for your device. |
Important Safety Warning:
DO NOT point the flashlight directly into eyes, especially when using the concentrated beam. The high intensity light can cause temporary blindness or eye damage.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Relybo |
| Model Number | Relybo-A05-FR |
| Light Source | 30W XHM88 LED Chip |
| Luminous Flux | 1,000,000 Lumens |
| Power | 30 Watts |
| Dimensions | 16.3 x 4.3 x 3.4 cm |
| Weight | 195 grams |
| Material | Aircraft-grade Aluminum |
| Battery Type | Rechargeable Lithium (main), 3x AAA (emergency backup) |
| Charging Port | USB-C |
| Output Port | USB (for power bank function) |
| Water Resistance | IPX5 (resistant to rain and snow) |
| Special Features | Digital battery display, 5 lighting modes, adjustable focus, power bank function, anti-slip grip, shock-resistant. |
7. Warranty & Support
Relybo products are manufactured to high-quality standards. For warranty information, please refer to the specific warranty card included with your product or contact Relybo customer support.
If you encounter any issues or have questions regarding your Relybo XHM88 Professional LED Flashlight, please contact our customer support team. Contact details can typically be found on the product packaging, the official Relybo website, or through your purchase platform.
Please have your model number (Relybo-A05-FR) and purchase date ready when contacting support.