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Fenix UC35 V2.0 USB Rechargeable Flashlight

$120.00 $89.95

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Out of stock

Max Lumens:


18650 or CR123A
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SKU: UC35V2BKN/ABarcode: 6942870305875N/A

Product Overview

The Fenix UC35 V2.0 rechargeable flashlight is the 2018 upgrade to the Fenix UC35 flashlight. Fitted with the Cree XP-L HI V3 LED, this light delivers a maximum 1000 lumens at a distance of 873 feet (266 meters). Turn the light on and off with the tactical tail switch and cycle through the six lighting modes via the newly designed metal side switch—which also has a built-in battery level indicator. You can achieve an incredible 800 hours of runtime when using the new moonlight brightness level. Compact and built-tough, the Fenix UC35 V2.0 flashlight is IP68 rated; dust proof and waterproof underwater to two meters.

2018 upgrade improvements over prior Fenix UC35:
-XP-L HI v3 LED provides greater brightness, efficiency and throw
-Improved stainless steel side switch with battery level indicator
-New body design is more compact
-Includes higher capacity 3400 mAH rechargeable battery for longer runtime
-USB port improved to charge faster and is easier to activate
-Improved waterproof and dust-proof rating (IP68)


Max Lumens: 1000
Max Beam Distance: 873 feet (266 meters)
Max Runtime: 750 hours
Lighting Modes: 5
Bulb Type: Cree XP-L HI V3 LED
Size: Length: 5.5” (140mm) Body: 0.9” (23.5mm) Head: 1.0” (25.4mm)
Weight: 3.1 oz. (89g) weight excluding batteries
Battery: One rechargeable 18650 Li-ion battery (included) or two CR123A batteries. NOTE: The light will not work with flat-top 18650s. We recommend any of the ARB-L18 series from Fenix for backup or replacement.
Included: As of Sept. 7th, 2021: ARB-L18-3400 Li-ion battery, Micro-USB charging cable, body clip, spare rubber switch boot, lanyard, holster, two spare O-rings
Warranty: Limited Lifetime Guarantee from Fenix Lighting USA

More Information

Additional Features of the Fenix UC35

  • Cree XP-L HI V3 LED, with lifespan of 50,000 hours
  • Powered by one 18650 rechargeable Li-ion battery or two 3V/CR123A Lithium batteries
  • 5V/2A Micro USB rechargeable, included 18650 rechargeable Li-ion battery
  • Battery level indication and low-voltage warning function
  • Digitally regulated output maintains constant brightness
  • Reverse polarity protection to protect from improper battery insertion
  • Anti-roll and anti-slip body design
  • Tactical tail switch features instant activation
  • Functional side switch for output selection
  • 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
Fenix UC35 V2.0 USB Rechargeable Flashlight specs chart


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




Tap the tactical switch to momentarily turn on the light; release it and 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→Moonlight →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 to General mode.


Boot-up Battery Level Indication

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

  • Green constant on: saturated
  • Green flashes: sufficient
  • Red constant on: poor
  • Red flashes: critical

Note: There is no indication when CR123A battery is used.


Intelligent Memory Circuit

The light memorizes the last selected brightness level on General mode. When turned on again the previously used brightness level will be recalled.


Intelligent Protection

The light will accumulate a lot of heat when working at Turbo mode. When the light is overheated up to 60°C or above, the flashlight will automatically step down a few lumens to reduce the temperature; when the temperature is lower than 60°C the output will gradually return to Turbo output level.


Low-voltage Warning

When the voltage level drops below 3V, the flashlight is programmed to downshift to a lower brightness level until Moonlight output is reached. When this happens in Moonlight mode, the battery level indicator will flash red to remind you to replace the battery. To ensure normal use, the flashlight will work until the battery runs out or the battery over-discharging protection activates. 


Note: The low-voltage warning only works with rechargeable Li-ion 18650 battery, not with disposable CR123A's.



  1. Turn off the light. Plug the USB side of the charging cable into any USB power supply. Uncover the dust cover of the light, and plug the Micro USB side of the charging cable into the charging port of the light.
  2. The battery level indicator displays red while charging and turns to solid green when charging is complete. The normal charging time of the included Fenix ARB-L18-3400 is about 3.2 hours.
  3. Once charging is completed, be sure to remove the charging cable and replace the dust cover to protect against dust and foreign objects.
  4. Recharge a stored light every four months to maintain optimum performance of the battery.
  5. Only Low output can be used while the light is being charged, but charging time will be prolonged.

Battery Replacement

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


Usage and Maintenance

  • 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.
  • 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.
  • Periodic cleaning of the battery contacts improves the lamp's performance as dirty contacts may cause the lamp 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.  


Warning 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.

Q1. Is the UC35 V2.0  internally waterproof?

A. Yes, the light is internally waterproof and is thus still waterproof without the port cover in place.


Q2.  What should I do if the UC35 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.

Product Videos

Customer Reviews

Based on 437 reviews
UC34 V2.0

Love these flashlights. I have several of the UC30 lights and I like the addition of the on / off switch on the end and the addition of the belt clip. Built like tanks and great battery life.

Nemanja M
New EDC Flashlight

Love the size of the flashlight as it’s perfect in my EDC sling bag. It’s extremely bright and I also like the strobe mode. It’s definitely blinding. Package arrived fast and this isn’t my first Fenix flashlight but I do like some of the upgrades that have been added to the newer models that my old one does not have. Would recommend!

Great EDC

I have been carrying this for about a year. It's small and perfect for an EDC.

UC35 few yrs. Old

My light UC35 shows lots of wear from real use.

It preforms like the first day out of the box.

My 3rd fenix

Now looking to add #4

Go Fenix team

Probably the best flashlight I've ever owned.

Im one those techy guys (I've owned a satellite communications company),I've also worked in civilian and federal law enforcement so I know my flashlights. I've had just about every major brand on the market. I have had a UC-35 2.0 now for about five or six years and I can say it's probably the best flashlight I've ever owned. I've used this thing in all kinds of conditions and dropped it many times from an altitude of about two stories and it works just fine. The only thing that I can recommend on this is 1) keep the tail cap unscrewed about a quarter turn whenever you keep it in a holster so you don't accidentally turn it on and set your pants on fire and 2) be sure you have the tail cap fully screwed down on the battery whenever you charge it as it will appear to charge with the battery disconnected and you may think there's a problem with a flashlight which I think is some of the complaints that people have reported as far as the flashlight being charged and not working.

Adam Rocke

I bought two of these flashlights and have an older model. they are prefect for home use and emergency use and on the road use. If you needed it in a hotel room to navigate to the bathroom at night, or in case of emergency in the hotel where their systems go down. The light is the best travel and home light you can get.If you needed light from your car to a building or walking on the street after dark, these lights are the best.I like it so much I bought one for my adult son and may buy them for my grand children sooner or later.

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