1. Introduction
Thank you for choosing the WUBEN A20 Flashlight. This high-performance, rechargeable flashlight is designed for various lighting needs, offering exceptional brightness and durability. Please read this manual carefully before use to ensure proper operation and to maximize the product's lifespan.
Image 1.1: The WUBEN A20 flashlight showcasing its different output modes: Turbo (4200lm), High (1200lm), Mid (400lm), Low (130lm), Eco (5lm), Strobe (4200lm), and SOS (400lm).
2. Safety Information
- Do not shine the flashlight directly into eyes. The powerful beam can cause temporary vision impairment or permanent eye damage.
- Keep out of reach of children.
- Do not disassemble the flashlight head or body, as this may damage the product and void the warranty.
- Use only the recommended battery type (21700 Li-ion) or compatible 18650 with adapter.
- Avoid exposing the flashlight to extreme temperatures or open flames.
- Ensure the battery is inserted with correct polarity to prevent damage.
3. Package Contents
Please check the package for the following items:
- WUBEN A20 Powerful Rechargeable Flashlight
- 4800mAh 21700 Battery
- Rubber Button Cap
- O-ring
- 18650 Battery Adaptor
- User Manual (this document)
- USB-C Cable
- Clip
- Holster
- Lanyard
- Packing Box
4. Product Features
- High Output: Maximum 4200 lumens with a beam distance of up to 222 meters.
- LED Type: Equipped with CREE XHP70 LED, offering a lifetime of up to 100,000 hours.
- Battery: Uses a 4800mAh 21700 lithium-ion battery, providing up to 110 hours of operation in Eco mode.
- Rechargeable: Built-in USB Type-C charging port for 5V2A fast charging.
- Optical System: Aluminum alloy vacuum plating reflector and double scratch optical lens with up to 99% light transmission.
- Durability: IP68 rated waterproof for use in extreme conditions. Constructed from hard anodized 6061 aircraft-grade aluminum alloy.
- Smart Features: Intelligent low power warning, reverse polarity protection, and intelligent temperature control design.
- User Interface: Smart "W" button for various functions including mode switching, battery indication, and lockout.
- Lighting Modes: 5 basic modes (Turbo, High, Mid, Low, Eco) with memory function, and 2 hidden modes (Strobe, SOS). Continuous output level selection is also available.
5. Setup
5.1 Battery Installation
Before first use, ensure the insulation sheet is removed from the battery compartment. Unscrew the tail cap, insert the 21700 battery with the positive (+) end facing the head of the flashlight, and then screw the tail cap back on securely. An 18650 battery can also be used with the provided adapter.
Image 5.1: Illustration showing how to remove the insulation sheet, insert the battery, and the Type-C charging port.
5.2 Charging
The WUBEN A20 features a built-in Type-C charging port. To charge:
- Locate the Type-C charging port on the flashlight body.
- Connect the provided USB-C cable to the flashlight and a 5V2A power adapter (not included).
- The indicator light on the 'W' button will show the charging status:
- Red Light: Charging in progress.
- Blue Light: Charging completed.
- Charging time is approximately 3 hours for a full charge.
Image 5.2: The WUBEN A20 flashlight, highlighting its Type-C fast charging capability and the included 4800mAh 21700 Li-ion rechargeable battery. It also shows compatibility with an 18650 battery (not included).
6. Operating Instructions
The WUBEN A20 is operated using a single 'W' button on the side.
6.1 Basic Operation
- Turn On/Off: Single click the 'W' button to turn the flashlight on or off. The flashlight will remember the last used basic mode (Eco, Low, Mid, High, Turbo).
- Mode Switching: While the flashlight is on, single click the 'W' button to cycle through the basic modes: Eco → Low → Mid → High → Turbo.
6.2 Continuous Output Level Selection
To adjust brightness continuously:
- Double click the 'W' button and hold it.
- The brightness will cycle through the output range (from 5 lumens to 4200 lumens).
- Release the button when the desired brightness level is reached.
6.3 Special Modes (Strobe & SOS)
- Activate: Double click the 'W' button from any state (on or off) to activate Strobe mode.
- Switch to SOS: While in Strobe mode, double click the 'W' button again to switch to SOS mode.
- Exit: Single click the 'W' button to turn off the flashlight and exit special modes.
6.4 Lockout Function
To prevent accidental activation, especially due to the high output, use the lockout function:
- Lock: Triple click the 'W' button from any state (on or off). The flashlight will flash briefly to indicate it is locked.
- Unlock: Triple click the 'W' button again to unlock. The flashlight will turn on in the last used basic mode.
6.5 Battery Power Reminder
The 'W' button also serves as a battery power indicator:
| Power Level | Indicator Light |
|---|---|
| 100%~80% | Blue light constant (Turns off after 5 seconds) |
| 79%~30% | Blue light flashes (Turns off after 5 seconds) |
| 29%~15% | Red light constant |
| Under 15% | Red light flashes |
Image 6.1: Detailed diagram of the 'W' button functions, including single click for output selections, double click for Strobe/SOS, triple click for lockout/unlock, and double click and hold for continuous output selection. The battery power reminder table is also shown.
7. Maintenance
- Cleaning: Clean the flashlight body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Threads and O-rings: Periodically lubricate the threads and O-rings with silicone grease to maintain water resistance and smooth operation. Replace O-rings if they appear damaged.
- Battery Care: If the flashlight will not be used for an extended period, remove the battery to prevent potential leakage. Store batteries in a cool, dry place.
- Lens Care: Keep the lens clean to ensure maximum light output. Use a lens cleaning cloth if necessary.
Image 7.1: The WUBEN A20 flashlight submerged in water, illustrating its IP68 water-resistant rating for extreme conditions.
8. Troubleshooting
If your WUBEN A20 flashlight is not functioning correctly, please try the following:
- Flashlight not turning on:
- Ensure the battery is inserted correctly with the positive (+) end facing the head.
- Check if the battery is charged. Recharge if necessary.
- Confirm the flashlight is not in lockout mode (triple click to unlock).
- Tighten the tail cap and head securely.
- Intermittent operation:
- Clean the battery contacts and threads with an alcohol swab.
- Ensure the battery is fully charged and properly seated.
- Reduced brightness or short runtime:
- The battery may need to be recharged or replaced if it's old.
- Ensure the lens is clean.
If these steps do not resolve the issue, please contact WUBEN customer service for further assistance.
9. Specifications
| Feature | Detail |
|---|---|
| Model | A20 |
| Light Source | CREE XHP70 LED |
| Maximum Output | 4200 Lumens |
| Maximum Beam Distance | 222 meters |
| Battery Type | 1 x 21700 Li-ion (4800mAh included), compatible with 18650 (with adapter) |
| Charging Port | USB Type-C (5V2A fast charging) |
| Material | Aircraft-grade aluminum alloy |
| Water Resistance | IP68 (Waterproof) |
| Dimensions (Length x Head Dia. x Tail Dia.) | 135.5mm x 42mm x 27mm |
| Weight (without battery) | 145g |
| Weight (with battery) | 215g |
10. Warranty and Support
WUBEN provides comprehensive customer support and warranty for the A20 flashlight:
- Free Return: Within 30 days of purchase.
- Free Repairing: Within 1 year of purchase.
- Manufacturer's Repairing: Within 5 years of purchase.
- Customer Service: 24/7 support available.
For warranty claims or technical assistance, please contact WUBEN customer service through their official channels.
