Firefly FEL6116 Manual

The Firefly FEL6116 is a high-performance LED flashlight designed for professional and outdoor use, featuring multiple brightness modes, strobe and SOS functions, durable aluminum construction, waterproof rating (IPX8), rechargeable lithium-ion battery, USB-C charging, adjustable focus beam, pocket clip, and tactical tail switch. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: LED emitter, Aluminum body, Tail switch, Mode button, USB-C charging port, Pocket clip, Adjustable focus bezel.

Feature	Description
LED Emitter	High-intensity CREE LED with long lifespan
Brightness Modes	Low, Medium, High, Turbo, Strobe, SOS
Battery	Rechargeable 18650 lithium-ion (included)
Charging Port	USB-C for convenient recharging
Waterproof Rating	IPX8 (submersible up to 2 meters)
Body Material	Aerospace-grade aluminum alloy
Beam Focus	Adjustable from spot to flood
Tail Switch	Tactical momentary and constant-on
Pocket Clip	Reversible for carry versatility
Dimensions	140mm length x 25mm diameter

Unpacking and Inspection

Carefully unpack and verify all components are present.

1. Remove flashlight from packaging.
2. Check contents: Flashlight, USB-C charging cable, user manual, warranty card.
3. Inspect for any visible damage during shipping.
4. Install battery if not pre-installed (positive end toward LED head).

WARNING! Do not look directly into LED when turned on. Keep away from children.

First-Time Setup

Prepare flashlight for initial use.

1. Charge battery: Connect USB-C cable to flashlight and power source until indicator turns green.
2. Test functions: Press tail switch for momentary on; twist tail cap for constant on.
3. Cycle modes: Half-press mode button to cycle through brightness settings.
4. Adjust focus: Rotate bezel to change beam pattern.

CAUTION! Use only provided or recommended 18650 battery. Incorrect batteries may cause damage.

Specifications

• LED: CREE XHP70.2
• Max Output: 3000 lumens
• Beam Distance: Up to 300 meters
• Runtime: 2 hours (Turbo) to 100 hours (Low)
• Battery: 18650 3.7V 3500mAh (included)
• Charging Time: 4 hours via USB-C
• Water Resistance: IPX8 (2 meters, 30 minutes)
• Impact Resistance: 1.5 meters drop tested
• Operating Temp: -20°C to 40°C
• Weight: 150g (without battery)

Controls and Operation

Tail Switch: Momentary on (press) or constant on (twist). Mode Button: Cycle through brightness and special modes.

Mode Sequence: Low → Medium → High → Turbo → Strobe → SOS → Low

Special Functions: Press and hold mode button for 2 seconds to lock/unlock. Double-click from off for Turbo. Triple-click for Strobe.

Focus Adjustment: Rotate bezel clockwise for spot beam, counterclockwise for flood beam.

Charging the Battery

Use included USB-C cable and any 5V/2A USB power source.

1. Ensure flashlight is turned off.
2. Remove rubber charging port cover.
3. Connect USB-C cable to flashlight and power source.
4. Charging indicator: Red (charging), Green (fully charged).
5. Replace cover securely after charging.

Tip: Do not charge unattended. Disconnect when fully charged to prolong battery life.

Using the Flashlight

Designed for various lighting scenarios.

1. General use: Twist tail cap for constant on, select desired brightness.
2. Tactical use: Press tail switch momentarily for instant light.
3. Long runtime: Use Low or Medium modes for extended use.
4. Emergency signals: Use Strobe for attention, SOS for distress.
5. Adjust beam: Focus for long-distance spotting or wide area illumination.

WARNING! Turbo mode generates heat. Do not use continuously for more than 10 minutes.

Maintenance & Care

Clean lens and body with soft, dry cloth. Apply silicone grease to O-rings periodically.

CAUTION! Do not disassemble beyond user-serviceable parts. Avoid solvents or abrasive cleaners.

Safety Information

Do not look directly at LED. Keep away from flammable materials when in use. Use only recommended charger and battery. Do not modify flashlight. Keep out of reach of children.

Warranty & Support

5-year limited warranty covering defects in materials and workmanship. Copyright © 2025 Firefly Lighting. For support, visit www.fireflylighting.com/support or contact 1-800-555-0199.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Flashlight won't turn on	Dead battery, loose tail cap	Charge battery; ensure tail cap is tightened securely.
Dim output	Low battery, dirty contacts	Recharge battery; clean battery and flashlight contacts.
Mode button not responding	Lock mode activated	Press and hold mode button for 2 seconds to unlock.
Not charging	Faulty cable, dirty port	Try different USB-C cable; clean charging port with dry cloth.
Water in lens	Damaged O-ring	Check and replace O-rings; ensure all seals are properly seated.

Reset: Remove battery for 30 seconds, then reinstall.

Service: 1-800-555-0199; www.fireflylighting.com/support