Fenix E03R V2 Reference ManualUpdated an hour ago
The Fenix E03R V2.0 is a rechargeable keychain flashlight with a red light mode. This summary is drawn from the manufacturer’s official user manual — see the downloadable PDF reference manual on the product page for complete details.
Product Features
- 500 lumens maximum output and 90 meters maximum beam distance
- Two white light LEDs and one red light LED, 50,000-hour lifespan
- Built-in 400mAh rechargeable battery, USB Type-C charging
- Switch-activated green/red breathing light
- Recessed switch with lockout function
- Battery level indication and low-voltage warning
- Intelligent overheat protection
- All-metal CNC-machined body with premium HAIII hard-anodized finish
- Size: 2.07" x 1.02" x 0.51" / 52.5 x 26 x 13 mm
- Weight: 1.06 oz / 30 g
Technical Parameters
Specifications reflect Fenix's lab testing with the built-in 400mAh battery at 21±3°C / 50-80% humidity. Actual performance varies by environment and battery status.
- High: Output 500 lumens, Runtime 1 hour 20 minutes*, Distance 90 meters, Intensity 2082 candela
- Med: Output 150 lumens, Runtime 2 hours, Distance 50 meters, Intensity 630 candela
- Low: Output 30 lumens, Runtime 6 hours 35 minutes, Distance 20 meters, Intensity 127 candela
- Eco: Output 5 lumens, Runtime 30 hours, Distance 9 meters, Intensity 20 candela
- Red: Output 5 lumens, Runtime —, Distance —, Intensity —
- Red Flash: Output 5 lumens, Runtime —, Distance —, Intensity —
- Breathing Light: Output 1 lumen, Runtime —, Distance —, Intensity —
Impact Resistance: 1 meter Waterproof: IP66
Operating Instructions
On/Off: Press and hold the switch for 0.5 seconds to turn the light on/off. Press and hold for 1.2 seconds to turn on the red light.
Breathing Light: With the light off and unlocked, double-click the switch to turn on the breathing light; press and hold for 0.5 seconds to turn off.
Output Selection: White light: single click to cycle Eco → Low → Med → High. Red light: single click to cycle Red → Red Flash. Breathing light: single click to cycle Red → Green → Red & Green.
Intelligent Memory Circuit: The light memorizes and recalls the last-used white light output level.
Lock/Unlock: With the light off, press and hold the switch for 3 seconds to lock (light blinks twice on Eco). Press and hold again for 3 seconds to unlock (light activates on Eco).
Charging
- Switch off the light, plug the USB-A end into an outlet, then connect the USB Type-C end to the light.
- Indicator glows red while charging and turns green when fully charged.
- Close the anti-dust cover once charging completes to maintain normal use.
- Eco and Red modes remain available while charging.
Battery Level Indication
- Green light on: 100%-85% (saturated)
- Green light flashing: 85%-50% (sufficient)
- Red light on: 50%-25% (poor)
- Red light flashing: 25%-1% (critical)
Intelligent Overheat Protection
The light steps down output automatically once its surface reaches 60°C or above on High mode; it re-allows High once it cools below 60°C.
Low-Voltage Warning
The light automatically downshifts brightness as voltage drops, until Eco is reached; in Eco, the indicator blinks 3 times every 10 minutes to prompt a recharge.
Usage and Maintenance
- Fully charge the light before its next use.
- Recharge a stored light every four months to preserve battery performance.
- Close the anti-dust cover after charging to maintain dust/water resistance.
What's Included
Fenix E03R V2.0 flashlight, USB Type-C charging cable, key chain, user manual, warranty card
Warnings
- Keep out of reach of children.
- Do not shine the light directly into anyone's eyes.
- Do not aim at flammable objects at close range.
- Do not hold the light in your mouth or use it in other unintended ways.
- The light shell can become hot during extended use — handle with care to avoid burns.
- Lock the light or remove the battery before placing it in pockets or backpacks to prevent accidental activation.
- The LEDs are not replaceable; the whole light must be replaced at end of LED life.