Fenix PD36R Rechargeable Flashlight

Max Lumens: 1600
Modes: 6
Battery: 21700
(961 customer reviews)


Engraving and personalization available for this flashlight. Click here.

The Fenix PD36R rechargeable flashlight is a high-performance flashlight unlike anything else on the market for its size. This LED rechargeable flashlight delivers a maximum 1600 lumens to an impressive distance of 928ft (283m), all on a high capacity 21700 li-ion battery. The Fenix PD36R is our first introduction of a product with a 21700 li-ion battery, extending battery runtimes by twice the standard li-ion battery. The high-capacity 5000 mAh battery can be conveniently charged through the USB-C port on the flashlight. Additionally, you will always be able to see the battery’s charge status at a glance with the external battery level indicator.

Operating this powerful LED rechargeable flashlight is simple with the tactical tail switch for momentary on/off, and the ability to cycle through six lighting modes using the side switch including a 1600 lumen turbo mode. Carry the Fenix PD36R how you want—on a backpack, belt, or MOLLE system with the two-way body clip. The amount of power and runtime packed into this flashlight are unmatched for its handheld size. IP68 rated dustproof and waterproof, this flashlight is the perfect all-purpose lighting tool for those needing maximum brightness and long runtimes.

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: 1600
Modes: 6


Fenix PD36R Flashlight specs chart

PD36R Size

Length: 5.4” (136mm)
Body: 1.0” (25.4mm)
Head: 1.0” (26.4mm)


3.0 ounces (85g) excluding battery

PD36R Battery

High-capacity 21700 rechargeable Li-ion battery (included)


Fenix ARB-L21-5000 rechargeable Li-ion battery, two-way body clip, USB Type-C charging cable, lanyard, holster, rubber switch boot, spare O-ring


Limited Lifetime Guarantee from Fenix Lighting USA

Additional Features of the Fenix PD36R:

  • LUMINUS SST40 LED (cool white) with a lifespan of 50,000 hours.
  • 4-hour fast charging with 5V/3A USB Type-C charging port.
  • Instant power activation with momentary tactical tail switch.
  • Simple output selection with side switch.
  • Two-way body clip for different lighting demands.
  • Boot-up battery level indication and low-voltage warning.
  • Made of durable high-strength and oxidation-resistance aluminum.
  • Premium type HAIII hard-anodized anti-abrasive finish.
  • Toughened ultra-clear glass lens with an anti-reflective coating.
  • Digitally regulated circuit for maintaining a stable output.
  • Reverse polarity protection, to protect from improper battery insertion.
  • Body with anti-roll and anti-slip design.

PD36R Switches

The tail switch is the tactical switch, and the side switch is the functional switch.


Slightly tap the tactical switch to momentarily turn on the light, release it the light will go out.
Fully press
Fully press the tactical switch to constantly turn on the light, press once again to turn off the light.

PD36R Output Selection

With the light switched on, single click the functional switch to cycle through Turbo→Eco→Low→Med→High.


With the light switched on, press and hold the functional switch for 0.5 seconds to enter strobe, click once again to return back to General mode.

Intelligent Memory Circuit

The light memorizes the last selected output excluding strobe. When turned on again the previously used output will be recalled.

Battery Replacement

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

Boot-up Battery Level Indication

Each time the light is turned on, the battery level indicator in the middle of the switch will automatically display the battery status for 3 seconds.

  • Green constant on: 85% – 100%, saturated
  • Green flashes: 50% – 85%, sufficient
  • Red constant on: 25% – 50%, poor
  • Red flashes: 1% – 25%, critical

Note: This only works with Fenix ARB-L21-5000 21700 rechargeable Li-ion battery.

PD36R Overheat Protection

The light will accumulate a lot of heat when used on Turbo or High for extended periods. When the light reaches a temperature of 50°C or above, the light will automatically step down a few lumens to reduce the temperature: the light will downshift to 550 lumens if Turbo is being selected; the light will downshift to 450 lumens if High is being selected.

PD36R Time-limited Downshift

When the light is kept working on Turbo for over 15 minutes, the output will reduce to 900-550 lumens within 15 minutes.

Note: Tested according to laboratory cooling test conditions.

When High or Turbo is needed again, restart the light or directly cycle back if battery level allows.

Low-voltage Warning

When the voltage level drops below 3V, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. When this happens in Eco output mode, the battery level indicator blinks red to remind you to recharge or replace the battery so as not to shorten the life or damage the battery. To ensure normal use, the flashlight will work until the battery runs out or the protection circuit activates.

Note: This only works with Fenix ARB-L21-5000 21700 rechargeable Li-ion battery.

PD36R Charging

  1. When charging is needed, remove the dust cover to reveal the charging port in the light neck, and connect the light to the power source with the included USB Type-C charging cable.
  2. The indicator in the middle of the switch will be on and display red to indicate charging status, when the indicator turns green, the charging is completed. The normal charging time of the included Fenix ARB-L21-5000 rechargeable Li-ion battery is about 4 hours.
  3. Once charging is completed, be sure to remove the charging cable and push the dust cover back to protect the charging port from dust and foreign objects.
  4. Recharge a stored light every four months to maintain optimal battery performance.
  5. The light can be turned on lower outputs when it is in charging process, but the charging time will be prolonged by this act.

PD36R Usage and Maintenance

  • Disassembling the sealed head can cause damage to the light and will void the warranty.
  • Fenix recommends using a quality battery with proper built-in protections.
  • 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.
  • Lithium battery needs to be charged when it is near depletion. Please immediately charge the battery when it is depleted. It has no memory effect.
  • 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 (included) when damaged.
  • 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.

If the above methods don’t work, please contact your authorized distributor.


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.

This flashlight will accumulate a lot of heat when used for extended periods, resulting in high temperature of the flashlight shell.

961 reviews for Fenix PD36R Rechargeable Flashlight

Based on 959 reviews

Customer Images

Image #1 from Enrique
Image #2 from Daniel615
Image #3 from Jared Cardone
Image #4 from Richard E Nance
Image #1 from Enrique


I love this light! It has enough throw and enough spill and with the SST-Luminous 40 LED and a 21700 battery it’s no wonder this is a best seller. This is my second one as I use my other one at home and keep this one for work. This light offers excellent battery life and love the tail switch. Also like the size of the light as I EDC this light. Just take a look at the photo and you’ll see that this thing really lights up your work area. Love the brass accents on the light and the smooth feel of the body of the light. It’s easy getting in and out of your pocket. Thank you Fenix for another excellent well thought out product!

(8) (1)
Image #2 from Daniel615


This is a great flashlight it’s my first Fenix but I can say I will be buying many more. For such a small light it sure is bright. Also the custom engraving they offer is really cool I got it on mine I like the fact it’s actually engraved & not just printed on there. I do a lot of work at night so I’m really looking foward to using this for years to come. The usb charging ability is a big + also. As is the double clip & carrying pouch it comes with. The battery time is another huge + bottom line I love this flashlight best I’ve ever had I would highly recommend this. It’s got a great weight to it as well.

(9) (0)
Image #3 from Jared Cardone

Jared Cardone

Just got my PD36R in the mail today! I’ve been using Fenix flashlights for over 10 years now and this flashlight moved right to to top of my favorites. I’m a plumber so every day I rely on my flashlight in crawl spaces, dark/dim lit basements and under sinks and vanities among many more scenarios. I tested the new light in my basement just to see how bright it is and wow, it’s bright. I haven’t tested it in the field yet but tomorrow will be the true test. Knowing Fenix, I won’t be disappointed!

(5) (2)
Image #4 from Richard E Nance

Richard E Nance

I have been a big fan of the Fenix brand for a few years now. I bought the PD36R to replace an older different brand light. I got it yesterday opened the packaging and I knew I had made the right decision. Feels great in my hand. I ran through all the modes in the garage at 6pm the light was very bright and clear. I could not wait for it to get dark. About 9:30pm last night I went outside. I live in the middle of the wood far away from city lights. I pressed the light on and and the yard and woods lit up let it was day light. Very nice beam and good distance. Just what I needed for my outdoors lifestyle. Thank you Fenix for such a great light. Hard to beat this light for under $100 and a lifetime warranty. I recommend that you buy one today. I am thinking about buying other for my wife. It is hard to see the light very well in one image but I picked this one of it in my hand.

(5) (2)
Image #1 from Enrique
Image #2 from Daniel615
Image #3 from Jared Cardone
Image #4 from Richard E Nance
  1. JOT OBEN (verified owner)

    Great quality

    (0) (0)
  2. Matthew K. (verified owner)

    Much brighter than I anticipated, and the ability to drop to lower settings is a great feature. Battery life on the highest setting is outstanding.

    (0) (0)
  3. Joseph (verified owner)

    Works better than others I have tried. I use a 511 flashlight case. I have wrapped a rubber band on the handle for extra grip.

    (0) (0)
  4. Nathaniel (verified owner)

    This thing is built like a tank! Everyone I show it to is very impressed. Very good shine distance (Even on low!) and great battery life.

    (0) (0)
  5. Tim (verified owner)

    The lumen difference and store effect is awesome. Combined with a rechargeable battery and this is a BEEFY product.

    (0) (0)
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