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Fenix E01 V2.0 AAA Flashlight

$17.00 $12.95

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Color: Black

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Max Lumens:


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SKU: E01V2BKN/ABarcode: 6942870307510N/A

Product Overview

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.


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
Lens Material: Polycarbonate
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

More Information

Additional Features of the E01 V2.0 AAA Flashlight

  • Utilizes Luminus SST20 Cold White LED with a lifespan of 50,000 hours.
  • Includes 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 specs chart


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 V2.0 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. 


Q6.  What should I do if the E01 V2.0 needs repair?

A: 1. 15-day replacement: Fenix will replace identical or equal products with documented manufacturing defects within 15 days of purchase.

2. 2-year free repair: Fenix will repair a light free of charge within 2 years of purchase if problems develop with normal use.

3. Lifetime maintenance: If repair is required after 2 years from the date of purchase, Fenix will charge for parts. The total repair fee is dictated by the cost of the replaced materials.

4. If you need warranty service, fill out the warranty form at https://www.fenixlighting.com/pages/warranty-repairs to start your repair claim.

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Product Videos

Customer Reviews

Based on 83 reviews
Sometimes Small is Better

Typical high quality Fenix product. Readily hooks on my jacket zipper pull. Provides the illumination I need. Uses readily available AAA batteries.

Very close copy of the discontinued CA1-AL LED flashlight

Works well. Maybe not quite as bright but a great price.
The only thing I didn't like was the color of the light which seemed greenish yellow but since it's just personal taste I gave it the 5 stars it deserves.

Allison Short
Mini and Mighty

By far one of the best mini flashlights out there. Has three modes that you can easily pivot to with one hand. It isn’t necessarily the smallest on the market but it does have a way brighter output than the super tiny button lights. Would recommend if you want a real flashlight in a compact design!

Awesome lights!!!

I consider Fenix lights to be one of the best or even THE best lights to be had today...I own at least a dozen of different models and have nothing but praise for them...

David R Mackintosh
A better light

What a great light this is! I bought this to replace an older model that I had used for over 20 years, I think. This one is even better!

Rod Terry
Nice small flashlight

Easy to carry very small works well. My second one lost the first one somewhere.

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