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Fenix E01 V2.0 AAA Flashlight

$17.00 $12.95

The Fenix E01 V2.0 AAA Flashlight emits an impressive maximum 100 lumens from an included single AAA battery. Using an ultra-thin optical lens, this flashlight delivers a soft and balanced beam a max distance of 115ft (35m). Access three brightness levels with a quick twist of the head. At only 2.6” long and just over a half of an inch round, this little flashlight is built tough with an IP68 dustproof and waterproof rating. Super small and compact, this standard AAA battery flashlight is a great choice for your everyday carry needs.

SKU: E01V2BKN/ABarcode: 6942870307510N/A
Max Lumens: 100
Modes: 3
Battery: AAA

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Max Lumens: 100
Max Beam Distance: 115 feet (35 meters)
Max Runtime: 25 hours
Lighting Modes: Three lighting modes
Bulb Type: Utilizes Luminus SST20 Cold White LED
Size: Length: 2.62” (66.5mm) Head: 0.59” (15mm) Body: 0.55” (14mm)
Weight: 0.46 oz. (13g) excluding battery
Battery: One included AAA battery
Included: Pairdeer AAA battery, key chain
Warranty: Limited Lifetime Guarantee from Fenix Lighting USA
Fenix E01 V2.0 AAA Flashlight specs chart

More Information

Additional Features of the E01 V2.0 AAA Flashlight

  • Utilizes Luminus SST20 Cold White LED with a lifespan of 50,000 hours.
  • Included one AAA battery.
  • Ultra-compact size for everyday carry.
  • One-handed operation with the rotating switch.
  • All-metal CNC machined body.
  • Premium type HAIII hard-anodized anti-abrasive finish.


Fenix E01 V2.0 AAA Flashlight runtime chart

On/off for E01 V2.0 AAA Flashlight

Tighten the light head to turn on the light, unscrew the light head to turn off the light.


Output Selection

Unscrew the light head and tighten it again within one second to cycle through Low→Med→High.


Battery Specifications

TypeDimensionsNominal VoltageUsability 
Ni-MH BatteryAAA1.2VRecommended√√
Alkaline BatteryAAA1.5VUsable
Non-rechargeable Battery (Lithium)AAA1.5VUsable
Rechargeable Battery ( Li-ion)10440 / 104503.7VBanned×

Battery Replacement

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


Intelligent Overheat Protection

The light will accumulate a lot of heat when used on High output level for extended periods. To reduce the temperature, the light will automatically step down a few lumens. High output level can be reselected if needed.


Usage and Maintenance for the E01 V2.0 AAA Flashlight

  • 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.
  • 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 light's performance as dirty contacts may cause the light 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.

Warning for the E01 V2.0 AAA Flashlight

  • 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.
  • All information provided in this manual is subject to change without prior notice.

FAQs about E01 V2.0 Flashlight 


Q1. What is the product positioning of E01 V2.0? And who are the target customers? 

A: The Fenix E01 V2.0 is a mini keychain flashlight with a negligible size and weight. From the included single AAA battery, it emits an impressive output of up to 100 lumens. The light is fairly durable with an all-metal CNC machining light body, premium type HAIII hard-anodized anti-abrasive finish, and excellent waterproof ability. Extremely small size, convenient rotating switch and flexible 3 output levels make the E01 the answer to everyday carry. The ultra-compact Fenix E01 V2.0 flashlight can be carried along with your keys so you always have a reliable and bright light anytime and anywhere. 


Q2. What are the key features and benefits of E01 V2.0? 

A: 1) Ultra-compact body. 

  2) Included one AAA battery. 

  3) All-metal CNC machining light body.  

  4) One-handed operation with the rotating switch. 

  5) 2.62'' x 0.59'' x 0.55'' / 66.5 x 15 x 14 mm. 

  6) 0.46 oz / 13 g (excluding battery). 


Q3. What kind of LED's are used in E01 V2.0? 

A: Utilizes Luminus SST20 Cold White LED. 


Q4. Does E01 V2.0 have overheat protection? 

A: The light will accumulate a lot of heat when used on High output level for extended periods. To reduce the temperature, the light will automatically step down a few lumens. High output level can be reselected if needed. 


Q5. What battery does the E01 V2.0 support? 

A: AAA Ni-MH Battery and AAA Alkaline Battery. 

    No compatible accessories available

Product Videos

Customer Reviews

Based on 72 reviews
Peter Poccia
Nice tiny, effective, durable lite

Tiny, appear durable, effective for short distance illumination; walking down a sidewalk or a known path, checking the mailbox, looking under the bed for the boogy man. With a "bump" of electrical rubber tape, covered with electrical plastic tape (violet) at the end, I can hold it in my teeth to have 2 hands free. Not as effective as a more powerful light or headlight for many things but easy to always have it with you or carry as a backup. And modest in price.

John Brown
The EO1 Fenix Pocket Flashlight

Big fan for a long time. I usually buy three at a time. They make great gifts and once people see how useful they are, they are sold on them as well. Size and brightness control are just a couple advantages you'll have.with this little flashlight.

barnett asch

I misplaced my E01 so I purchased this E01 V2.0. I carry it in my trousers pocket and I use it several times a day. I love this flashlight and though I rarely use the medium or the high power it's great to have three powers.

William Ludwig
Average light and I'm being kind.

Disappointed in the product. The light is a bit yellow, diffused and I am not seeing 100 lumens. It is however a nice stocking stuffer for Christmas.

John Galt
Take the good with the bad…

This version is a nice improvement, only as far as light output goes. I would prefer a single mode keychain torch, but I really like Fenix products so I gave this one a try. The body is slippery when turning on or off compared to the old version due to a lack of knurling on the head and flat machined surface on the body. The new version definitely looks nice but I find the old version simply easier to use. As for the modes, they are nicely spread out and useful in their own way depending on task. For me, the 25lm output is perfect with plenty of runtime. If that was the only mode on there I’d be fine with that. The light does appear to have a slight green tint to it but I’m not too worried about it being only a $12 torch. Overall it’s a solid keychain torch for the cost.

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