Fenix PD36R Rechargeable Flashlight

Max Lumens: 1600
Modes: 6
(347 customer reviews)

$132.00 $99.95

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.

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WARNING. Be aware of counterfeit Fenix merchandise in the U.S. marketplace.

Max Lumens: 1600
Modes: 6


Fenix PD36R Flashlight specs chart

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

Weight: 3.0 oz. (85g) excluding battery

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

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

Warranty: Limited Lifetime Guarantee from Fenix Lighting USA

Additional Features of the Fenix PD36R Rechargeable Flashlight

  • 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.

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.

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.

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 until to 550 lumens if Turbo is being selected; the light will downshift until to 450 lumens if High is being selected.

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.


  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.

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.

347 reviews for Fenix PD36R Rechargeable Flashlight

  1. Nickolas F. (verified owner)

    The light is exceptional so far. Small, bright, long-lasting battery. I thought the product did not include a battery from the web page, so I ended up ordering an additional battery. It should be more clear that a battery is included. That’s on me though I suppose. The reason I docked a star is because the included carrying case barely fits the flashlight. It fits on my belt without a problem, but the light itself is simply way too snug inside the case. I always have to use two hands to draw and re-holster due to the tight fit. I would have ordered a separate case, but I didn’t see anything available at the time of ordering. In summary, it’s a great light, but includes a poor case.

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  2. William Martin 4467 (verified owner)

    the on off button needs more shield around it . accidentally came on in my pocket.

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    • Dianne (store manager)

      I would recommend either utilizing the lock out feature or do a slight turn to the head (will disconnect battery) when putting it in your pocket so that it doesn’t accidentally turn on.

  3. Peter (verified owner)

    Very Bright, Energy Efficient. BUT at night the button to change illumination is often VERY difficult to locate by feel (could the little LED not stay lit or the knob be a little taller?)

    3 out of 4 people found this helpful. Was this review helpful to you?
  4. Anonymous (verified owner)

    Needs a lower setting

    1 out of 3 people found this helpful. Was this review helpful to you?
  5. Anonymous (verified owner)

    Great flashlight. I would love to see Fenix ADD a 15 or 20 lumen setting to this flashlight. 30 lumens is just to bright for the lowest setting. I have been using this flashlight everyday at work. 15 or 20 lumen setting for this flashlight. Hint, hint.

    1 out of 2 people found this helpful. Was this review helpful to you?
  6. Anthony C. (verified owner)

    Solid light, this is my first “high end” flashlight and overall I’m very pleased with this purchase. After many long hours of researching different lights from various companies I settled on the PD36R. I purchased this light to carry daily and accompany me on my random adventures. Its very bright and feels durable. Will put it to good hard use in the summer when fishing/kayaking season rolls back around. My only complaint about it is that the On/Off button protrudes out too much and has been pressed multiple times over the last few weeks when in my jean pockets due to my belt hitting the button. By the time I see it, the battery has already been drained to red. I guess it was on the entire day and I didnt know. That has happened more than once. A little annoying but still a great light none the less.

    2 out of 2 people found this helpful. Was this review helpful to you?
  7. Robert (verified owner)

    I’m extremely satisfied with the size of the light, and the brightness. The five levels of brightness are great. The only thing that I would like to see changed is the size of the focused beam. I would really like a light that can be focused to a very narrow beam, in order to maximize the beam travel distance. I do a lot of equipment inspection in rather dark industrial plants, and being able to illuminate objects at a distance, that can’t be closely approached on foot, would be very helpful.

    3 out of 3 people found this helpful. Was this review helpful to you?
  8. Dave LaForest (verified owner)

    Awesome tactical flashlight! The only drawback I have had since I bought it has been how hot the light gets when used in the 1600 lumin mode. It will burn your fingers if left on longer than about 60 seconds. Other than that, this is one of the best flashlights I have ever owned.

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  9. Craig (verified owner)

    Good light. Just ok

    0 out of 1 people found this helpful. Was this review helpful to you?
  10. Marty (verified owner)

    Great light. Very bright on the turbo setting. Long battery life between charges. Only issue is the tail switch has failed to acted as expect a few times. Press and no activation or it changes the the light to eco mode.

    1 out of 1 people found this helpful. Was this review helpful to you?
    • Dianne (store manager)

      I will have warranty reach out to you about that tail switch.

  11. Henry S. (verified owner)

    The flashlight is great, but the shipping and exoected discount for joining site was not applied

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    • Dianne (store manager)

      We have contacted you about getting that New Member discount refunded to you – the New Member code has to be entered into the cart at checkout for the discount to be applied to your order.

  12. Scottie Stoots (verified owner)

    Awesome flashlight !!!!

    0 out of 1 people found this helpful. Was this review helpful to you?
  13. Evan (verified owner)

    It’s a great bright light. Like the ease of use and different modes. I’m finding out that when using the tail switch for momentary light it won’t work 100% of the time, meaning the light won’t turn on until you click it all the way.

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    • Dianne (store manager)

      I have asked warranty to reach out to you about that.

  14. Mark (verified owner)

    Easy carry, east to adjust brightness in tight spaces,
    The adjust button acted up for a while but it seemed to have fixed itself.

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  15. Glen S. (verified owner)

    It gets hot pretty quick on brightest setting. Very bright and good battery life. I would buy it again.

    1 out of 1 people found this helpful. Was this review helpful to you?
  16. Richard Dreiling (verified owner)

    Does get hot quick!!!

    2 out of 2 people found this helpful. Was this review helpful to you?
  17. Michael Wolfkill (verified owner)

    The only think i dislike is for my long use at work it gets really hot. Wish it had some kind of wrap around the metal. Other than that its a great light

    2 out of 2 people found this helpful. Was this review helpful to you?
  18. Joseph W. (verified owner)

    Love this bright light. Gotta have the bigger battery at this lumen level. I wish they’d make a light that won’t roll around, not sure why they’re all round but otherwise it’s great. Side button is difficult to locate but still works well. Love the quick charge profile that I use with my phone. Cords work on both.

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  19. Mark (verified owner)

    Extremely bright light on high mode but gave it a 4 because it gets extremely hot to the touch after a short time.

    1 out of 1 people found this helpful. Was this review helpful to you?
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