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Fenix LD01 Flashlight

List Price: $52.00
Price: $34.95 & FREE Shipping on orders over $35. Details
You Save: $17.05 (33%)
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  • LED blasts a max 72 lumens (1.5 hrs runtime) on turbo and 3 lumens (27 hrs runtime) on low selected by simple twist of the lights head
  • Includes 3 lighting modes-Mid-Low-High
  • Body Size: 3" (Length) x .25" (Diameter); 1 ounces; Waterproof to IPX-8 Standard
  • Powered by 1 AAA batteries; easy to find and affordable (Not Included)
2 new from $34.95 1 used from $25.76

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Frequently Bought Together

Fenix LD01 Flashlight + Fenix LD15 High Performance LED Flashlight + Fenix E01 Flashlight, Black
Price for all three: $88.19

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This item: Fenix LD01 Flashlight
Customer Rating (114) (135) (111) (151)
Price $ 34.95 $ 29.22 $ 13.29 $ 39.95
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Sold By EdisonBright® Amazon.com Amazon.com Going Gear
Batteries Required Y Information not Provided Y Y
Power Source Battery-Powered Battery-Powered Battery-Powered Battery-Powered
Item Weight 0.03 pounds 0.05 pounds 0.03 pounds 0.1 pounds
Length 0.55 inches 0.78 inches 2.8 inches 8 inches
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Product Description

Product Description

1 Hour run time at turbo, 72 lumens output. Requires 1 AAA battery.


A keychain flashlight with three brightness levels, the Fenix LD01 LED flashlight is an ideal pocket tool for people who want to keep it light in more ways than one.

The LD01 keychain flashlight is small enough to fit easily in the hand.
The LD01 offers three output types: 85 lumens (which lasts for one hour on a single AAA battery), 28 lumens (3.5 hours), and 9 lumens (11 hours). As a result, you can find a setting for virtually any activity, from shining a light in a dark cave to getting a closer look at a car engine. Just as importantly, the LD01 measures only 0.55 inches in diameter and 2.95 inches long, helping it fit easily in a jacket pocket or messenger bag (the light also includes a stainless-steel pocket clip for wearing in a shirt pocket). And thanks to the light's long-lasting Cree XP-E LED bulb, the LD01 shines a beam steadily for roughly 50,000 hours before burning out.

The flashlight is also well built, with a durable aircraft-grade aluminum body coated with a premium Type III hard-anodized, anti-abrasive finish. The construction--which also includes a toughened ultra-clear glass lens with an anti-reflective coating--helps the light hold up to all kinds of abuse. Other features include a reliable twist switch for easy one-handed operation, a waterproof housing to the IPX-8 standard, and a spare O-ring. The LD01, which also stands on a flat surface to serve as a candle, weighs 0.5 ounces (excluding batteries). The flashlight carries a limited lifetime warranty.


  • Bulb: Cree XP-E LED
  • Bulb lifespan: 50,000 hours
  • Lighting mode outputs: 28 lumens, 9 lumens, 85 lumens
  • Runtime: 3.5 hours (28 lumens), 11 hours (9 lumens), 1 hour (85 lumens)
  • Working voltage: 0.9 to 1.7 volts
  • Construction material: Aircraft-grade aluminum
  • Finish: Type III hard-anodized anti-abrasive finish
  • Waterproof: Yes, to IPX-8 standard
  • Accessories: Pocket clip, key ring, and spare O-ring
  • Batteries: One 1.5-volt AAA (NiMH or alkaline)
  • Dimensions: 0.55 inches in diameter, 2.95 inches long
  • Weight: 0.5 ounces (not including battery)
  • Warranty: Limited lifetime

Product Details

  • Product Dimensions: 0.6 x 0.6 x 3 inches ; 0.5 ounces
  • Shipping Weight: 2.1 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B004DVIKC2
  • Item model number: LD01R4
  • Batteries 1 AAA batteries required. (included)
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (114 customer reviews)
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Customer Reviews

Med. low and high settings are very useful.
just my 2 cents
This is my EDC light on my keychain, it is amazingly powerful for its size.
It is a very well made light and it is super bright.
Steve in New York

Most Helpful Customer Reviews

27 of 27 people found the following review helpful By tekrrr on September 8, 2011
Verified Purchase
Compact. Weighs almost nothing. Lasts a long time on one AAA cell (I change the battery once a month whether it needs it or not, just to be prepared.). The three light levels are perfect. Lowest for reading menus in dark restaurants. Medium will light an entire room when stood on end, reflecting off the ceiling. High for long distances. Excellent spot diffusion with almost no artifacts. Black anodized aluminum body is very durable. Recessed glass lens is very well protected. Only negative is a high pitched whine when placed upright on a hard surface. Barely noticeable, probably from the LED circuitry. Includes very good clip, key ring, and extra o-ring. In short, nearly perfect. Keep the o-ring lubed with a little vaseline and it will last years and make it easier to turn off and on.
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28 of 30 people found the following review helpful By James Q. Smith TOP 1000 REVIEWER on January 27, 2012
Verified Purchase
There are quite a number of reviews on this pocket LED light, generally called the Fenix LD01 Flashlight.

However, Fenix has created confusion since upgrades to LD01, with marked changes in features, carry the same product name, LD01; the products are etched with the same name, as is the box. Only the data sheet is updated with new specifications. Multiple older versions in the Amazon catalog, with the largest user reviews, are obsolete. When you order through those older items, you get this instead, the LD01 R4, which is the current version, and some users complain they did not get what they ordered. For details, I've put the full review in the correct area of the Amazon catalog Fenix LD01 R4 72-lumen AAA Keychain LED Flashlight Black - Fenix LD01R4BLK.
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15 of 16 people found the following review helpful By Amazon Customer on September 7, 2011
Verified Purchase
I really love this little light, it is amazingly bright for a single triple AAA battery flashlight. Great quality, good runtime, and a lot of fun.
I have had this light for 2 months now and have used it at least a couple times a day. I put a Energizer Ultimate L92BP-4 Lithium AAA Battery 4 Pack and have only changed the battery once. I put it on my key chain and hardly notice the addition. It is the perfect size (tiny) and doesn't add much size or weight to your pocket. I have found it invaluable to carry a flashlight all the time. On high this flashlight will light up the back yard better than my 3d Maglight. And on low the runtime is extremely long.
We have chickens that need to be locked up every night. We have plenty of lighting, but that gets the chickens all riled up. I use the flashlight on low and don't ruffle a feather, but still have enough light on high to find the occasional escapee.
Overall I can't think of a way to improve this light for my uses.
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11 of 13 people found the following review helpful By duc916 on December 5, 2011
Verified Purchase
The light this thing made with a AAA battery was decent, but after installing a 10440 lithium-ion 3.7V rechargeable battery, it's AMAZING... Power to weight ratio is ridiculous. This is how to have 200 lumens of light always available without having to wear it in a holster like a dork.

Naysayers will say it'll burn out prematurely... Well, the Cree XP-E spec sheet says it can handle a maximum of 3.9V so I'm not too worried. Check out the Fenix E05... same LED in a bigger body using a 3V lithium. Use common sense and don't leave the LD01 on the high setting until it's scorching hot and it'll be okay. It seems silly to use a AAA battery with this LED knowing it's rated up to 3.9V. Maybe it will shorten the lifespan using it this way, but that never stopped me from overclocking my computers either. CPU's always become obsolete long before any problems arise, so if you're not overclocking, you're not getting your money's worth. Same goes for this flashlight. If you're using AAA's in it, you're not using it to its potential.

EDIT (7-15-2014)
Coming up on the 3 year mark and it's still going strong with daily use of Li-ion 10440 rechargeables.
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6 of 7 people found the following review helpful By R. K. Wallen on December 22, 2011
Verified Purchase
Since I got the Fenix LD01 I have not been without it. A few weeks ago I was leaving for work and thought about leaving the light at home because my work-place is well-light and I'm home before dark. That afternoon I needed to show a DVD and the player was inside a podium where it was impossible to see the control labels. Out came the light - labels visible again. In this review I'll describe what is so exceptional about the light, clear up some confusion about how it works, and describe a simple modification that makes it even handier.

*** Why is this flashlight so good?***
1. It is amazingly powerful. It illuminates like a spotlight.
2.It runs and runs. The low setting is perfect for navigating familiar trails in the dark or going down into the basement. I use it multiple times everyday for long periods on the low setting and the battery (rechargeable NiMH) lasts three weeks.
3. It is always with me. It is unnoticeable in my pants pocket. Because it is always with me I have found many helpful uses: small print becomes legible under bright illumination. Stand it on its base on the low setting and it provides a nice gentle light for my pre-dawn stretches and exercises. I also use it to get around the house rather than flipping lights off and on.

*** How the light works***
Early directions were confusing about the time parameters for switching between light levels. Current online instructions are much clearer. The main point is that there is a 1.5 second window for changing levels. If the light is off longer than that it recycles to the beginning of the sequence. The other important fact is that the sequence of levels is medium - low - high. The light always comes on at the medium setting. Turn it off and then on within 1.
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