Fenix E20 V2.0 AA Flashlight

Max Lumens: 350
Modes: 4
Battery: AA
(78 customer reviews)


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The Fenix E20 V2.0 AA flashlight has been upgraded to be brighter and better than its predecessor. Powered by the included AA batteries. It has a maximum output of 350 lumens and the tail switch operates all functions including on/off and four brightness levels, always starting on low.  At only 5” long, this flashlight is a perfect everyday carry size. The Fenix E20 V2.0 also features a  patented ultra-thin optical lens with an automobile coating which reduces weight and allows for clearer vision. This flashlight is built rugged with a hard-anodized aluminum finish and an IP68 rating; dust-proof and waterproof underwater to 2 meters. The Fenix E20 V2.0 flashlight is a great option for those looking for an affordable standard AA powered flashlight in a compact everyday carry size.

For commercial orders and large purchases, contact us at (888) 775-9996 x6, or
WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace.

Max Lumens: 350
Modes: 4


e20 ansi chart

E20 V2.0 Size:

Length: 5.0” (127mm)
Body: 0.7” (16.8mm)
Head: 0.8” (21mm)

E20 V2.0 Weight:

1.5 oz. (42g) excluding batteries

E20 V2.0 Battery:

Two alkaline AA batteries. Ni-MH batteries recommended for best overall performance.


Two AA alkaline batteries, spare O-ring, lanyard


Limited Lifetime Guarantee from Fenix Lighting USA

Additional Features of the Fenix E20 V2.0 AA Flashlight

  • A Luminus SST20 LED with a lifespan of 50,000 hours.
  • Powered by 2 x AA batteries (Ni-MH/Alkaline).
  • Digitally regulated circuit for maintaining a stable output.
  • Intelligent overheat protection against high surface temperature.
  • Reverse polarity protection, to protect from improper battery insertion.
  • One-handed operation with the reverse tail switch.
  • Made of A6061-T6 aluminum.
  • Premium type HAIII hard-anodized anti-abrasive finish.
  • Automobile ultra-thin patented optical lens coating process.


Fully press the tail switch to turn on/off the light.

Output Selection

With the light switched on, tap the tail switch to cycle through Eco→Low→Med→High.

Battery Specifications

Type Dimensions Nominal Voltage Usability  
Ni-MH Battery AA 1.2V Recommended √√
Alkaline Battery AA 1.5V Usable
Non-rechargeable Battery AA 1.5V Usable
Rechargeable Li-ion Battery 14500 3.7V Banned ×

Warning: Do not mix batteries of different brands, sizes, capacities or types. Doing so may cause damage to the flashlight or to the batteries being used.

Battery Replacement

Unscrew the light tail and insert the battery with the anode side (+) towards the light head, then screw the light tail back on.

Low-voltage Warning

When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. To ensure normal use, the flashlight will not turn off automatically and will work till the battery runs out completely.

Intelligent Protection

The light will accumulate a lot of heat when used on High output level for extended periods. When the light reaches a temperature of 58°C or above, the output will automatically step down by about 1% every 1 second until to Med to reduce temperature. When the temperature is reduced, the output will gradually increase by about 1% every 5 seconds until to High. The original output of every mode is restored each time the light is switched.

Note: *The above specification is from the result produced by Fenix through its laboratory testing. Actual output may vary slightly according to the working environments.

Usage and Maintenance

  • Disassembling the sealed head can cause damage to the light and will void the warranty.
  • Fenix recommends using an excellent quality battery.
  • If the light will not be used for an extended period, remove the battery, or the light could be damaged by electrolyte leakage or battery explosion.
  • Unscrew the tail cap half a turn or take out the battery to prevent accidental activation during storage or transportation.
  • 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 lamp’s performance as dirty contacts may cause the lamp to flicker, shine intermittently or even fail to illuminate for the following reasons:

A: The battery needs replacing.
Solution: Replace battery (Ensure battery is inserted according to the manufacturer’s   specifications).

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 contact your authorized distributor.


  1. This flashlight is a high-intensity lighting device capable of causing eye damage to the user or others. Avoid shining the flashlight directly into anyone’s eyes.
  2. All information provided in this manual is subject to change without prior notice.

78 reviews for Fenix E20 V2.0 AA Flashlight

Based on 78 reviews
  1. jared c. (verified owner)

    Nice light, but the lens gets marked up permanently too easily. As for the “patented ultra-thin optical lens with an automobile coating”, I’m not sure what it is made of, but it seems like its a hard plastic? because it has gotten permanent marks on it. I know both my chevy and ford the headlights assemblies are made of plastic, so I suspect it is strong polycarbonate plastic and not glass.

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  2. Anonymous (verified owner)

    If you do not want to use a headlamp for walking/hiking in the evening or night this model flashlight is great. I own three. It has a nice neutral beam tint so my eyes do not feel burnt by blue white light after use. The model is small and not heavy and can maintain 150 lumens output for along time. It has a nice wide beam spread. Recommended.

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  3. Rick B. (verified owner)

    Manly and Bold ! Mine is nekked without the clip.

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  4. Richard Roberts (verified owner)

    I like Fenix very much. Excellent quality. Good value. Bought two; one for me, one for my brother. I love my brother and do not send him poor quality products.

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  5. Peter (verified owner)

    Good flashlight to have around since it uses common AA batteries and throws out a pretty good beam. A real necessity in these crazy times. I like the size, lightweight and the fact that the power source can be scrounged up from most junk drawers though I recommend high quality alkaline or lithium batteries with rechargeable batteries as a back up. Seems well built also. Shipped fast.

    (0) (0)
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