

Fenix E40 Flashlight
Fenix E40 is a high-intensity all-around outdoor flashlight. Besides the momentary-on function, the unique dual switch in the tail cap realizes the fast mode selections between 3 brightness levels and strobe mode. The advances of the high-quality plastic body and the quick heat dispelling light head ensure you a comfort when use it. Powered by readily-available AA batteries, Fenix E40 is your best choice for outdoor illumination anytime and anywhere with the durability and power management for which Fenix is recognized around the world.
Technical Parameters
| ANSUFSC | General Mode | Strobe | ||
| Low | Mid | Turbo | ||
| 34 LUMENS | 105 LUMENS | 220 LUMENS | 220 LUMENS | |
| 31h | 9h | 3h | ||
| 260m | ||||
| 17500ed | ||||
| 1m | ||||
| IPX-8, underwater 2m | ||||
| EXTRA FUNCTION | ||||
| ACCESSORIES | Lanyard, spare o-ring and rubber switch boot | |||
- Cree XP-E (R4) LED with a lifespan of 50,000 hours
- Uses four 1.5V AA (Ni-MH, Alkaline ) batteries
- 180mm (Length) x 43mm (Diameter)
- 165-gram weight (excluding batteries)
- Digitally regulated output maintains constant brightness
- Reverse polarity protection guards against improper battery installation
- Anti-roll, slip-resistant and anti-freezing body design
- Tactical tail cap switch with momentary-on function
- Mode switch in the tail cap, for fast mode selection
- Made of durable aircraft-grade aluminum
- Premium Type III hard-anodized anti-abrasive finish
- Toughened ultra-clear glass lens with anti-reflective coating
Notice: The above-mentioned parameters (lab-tested with 2500mAh Ni-MH batteries) are approximate and may vary between flashlights, batteries and environments.
Operation Instruction
The big button in the tail cap is the power switch and the small one is the mode switch button. Press the power switch lightly to momentarily activate the flashlight. Press the power switch completely to turn on the flashlight and lock it. Another press will turn it off.
With the flashlight on,
A single press on the mode switch button allows switching between Low→Mid→High→ brightness levels;
Press and hold the mode switch button for about one second to enter into Strobe mode.
While in Strobe mode, a single press on the mode switch button returns you to the non-flashing mode.
E40 memorizes the brightness level while in the general mode. When turned off and then on, the flashlight automatically enters the general (non-flashing) mode.
Battery Specifications
| Type | Dimensions | Nominal voltage | Usability | |
| Ni-MH battery | AA | 1.2V | Recommended | |
| Alkaline battery | AA | 1.5V | Usable | |
| Non-rechargeable Battery(Lithium) | AA | 1.5V | Usable | |
| Rechargeable Battery (Li-ion) | 14500 | 3.7V | Banned |
+ Warning: please do not mix using batteries of other manufacture, capacity, size or type. Doing so will cause damages to the batteries or flashlights.
Battery Replacement
Unscrew the tail cap to put in the batteries with the anode side (+) toward the light head. Simply screw the tail cap back on to test.
Usage and Maintenance
- Please don’t disassemble the sealed head as doing so can cause damage to the flashlight and will void the warranty.
- To get the most from this E40, Fenix recommends using high-performance Ni-MH rechargeable batteries. Alkaline batteries will reduce runtimes significantly.
- High-quality batteries are essential and must be removed when the flashlight will not be used for an extended period of time. As with other performance electronics, E40 can be damaged by battery leakage and the potential for battery explosion.
- Due to the momentary-on tactical switch, the flashlight can be activated when stored, transported or placed in a bag. Please take out the batteries before put it in the bag to avoid unwanted operation.
- Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.
- Periodic cleaning of the battery contacts improves the flashlightÕs performance as dirty contacts may cause the E40 to flicker, shine intermittently or even fail to illuminate for the following reasons: Reason A: The batteries need replacing.
Solution: Replace batteries (Please confirm the correct installation of anode and cathode).
Reason B: The threads, PCB board contact or other contacts are dirty.
Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.
If the above methods don’t work, please refer to the warranty policy before contacting your authorized distributor.
Product Warranty
We will replace products with documented manufacturing defects within 15 days of purchase and repair a light free of charge within 24 months of purchase if problems develop with normal use; if repair is required after 24 months from the date of purchase, we will charge for parts. The total repair fee is dictated by the cost of the replaced materials.
Warranty Card Registration
We kindly suggest that you register your guarantee card on the official website of Fenixlight Limited. YouÕll receive an extra six months of warranty coverage once you have successfully registered. By participating in an optional customer survey, you are entered in a drawing for free Fenix products.
Warning
E40 is a high-intensity lighting device and capable of causing eye damage to the user or others so please avoid shining the light directly into anyoneÕs eyes.
Documents / Resources
![]() | E40 Flashlight |
References
- User Manualmanual.tools
