Last Updated on November 11, 2026
Here, I’m going to compare the Fenix PD35 and the Fenix UC35. They are slim aluminum flashlights from the same brand, and both use a tail switch for power and a side switch for brightness. When I recommend one over the other, I look at how you’ll carry it and where you’ll charge it. The Fenix PD35 vs UC35 comparison also depends on the generation you’re looking at.
- For a shorter light with more reach: I would choose the PD35 V3.0. It is rated for 1,700 lumens and 357 meters. Its flashlight body has no charging port.
- For charging with the battery still inside: I would choose the UC35 V2.0 if Micro-USB works for you. It is rated for 1,000 lumens and 266 meters. Fenix’s PD35R is a separate model with a USB-C port on the flashlight.
What is the main difference between Fenix PD35 and UC35?
The biggest difference in the Fenix PD35 vs UC35 comparison is where you plug in the cable. With a PD35 TAC, V2.0, or V3.0, you take the rechargeable 18650 out. Some batteries have their own USB port and others need a compatible external charger. With a UC35 or UC35 V2.0, the Micro-USB port is on the flashlight. You can plug it in after a walk and leave the battery in place.
The two V2.0 models both peak at 1,000 lumens, and the UC35 V2.0 has the slightly longer rated beam. The larger increase in output and reach comes with the PD35 V3.0.
Fenix PD35 vs UC35 Comparison Table for 2026
The first table compares PD35 V2.0 with UC35 V2.0. I’ve included the other versions farther down so you can match the numbers to the model marking. The older photos show the differences in the bodies and kits.
| Feature | Fenix PD35 V2.0 | Fenix UC35 V2.0 |
|---|---|---|
| Maximum output | 1,000 lumens | 1,000 lumens |
| Lowest steady output | 3 lumens (Eco) | 1 lumen (Moonlight) |
| Rated beam and intensity | 250 m, 15,600 cd | 266 m, 17,700 cd |
| Rated Turbo runtime | 2 hr 50 min total, including step-down | 2 hr 15 min on the 3,500 mAh chart, 2 hr 5 min on the 3,400 mAh chart |
| Longest runtime | 430 hr at 3 lm | 800 hr at 1 lm on the 3,500 mAh chart, 750 hr on the 3,400 mAh chart |
| LED | Cree XP-L HI V3 | Cree XP-L HI V3 |
| Charging | Remove the rechargeable cell to charge | Micro-USB port on the flashlight |
| Modes | Five steady settings plus strobe | Five steady settings plus strobe |
| Battery and kit | One compatible 18650 or two CR123A. Check the bundle for the included cells. | One compatible 18650 (included), or two CR123A for backup |
| Length and bare weight | 138 mm, 88 g | 140 mm, 89 g |
| Dedicated review | Fenix pd35 | Fenix uc35 flashlights |
| PD35 kit and original UC35 photo |  Check Price
PD35 kit with a separate charger shown. |
 Check Price
Original UC35 packaging shown. The link leads to a UC35 V2.0 kit. |
Both V2.0 lights have a Cree XP-L HI V3 LED. The original UC35’s 960-lumen output, 200-meter beam, and 150-hour Eco rating belong to the older XM-L2 version. Those numbers are useful if you own the older light.
Head-to-Head Comparison Between Fenix UC35 and PD35 Flashlights
Durable Construction
Both V2.0 models use a hard-anodized aluminum body with a textured grip. A clip and the shape of the body help keep the light from rolling, especially on a bench. If you charge the UC35 in the field, close its port cover before putting it back in a bag. A clean, fully seated tailcap matters on either light, especially after swapping batteries in dusty conditions.
Weight and Size
Comparing Fenix PD35 vs UC35 by size is easiest if you use the same generation and leave the battery out of both weights. The V2.0 models are separated by only 2 mm in length and 1 g. The original UC35 is longer, and that is the version you’re likely to notice more in a narrow pocket or small holster.
| Flashlight | Length | Head diameter | Weight without battery |
|---|---|---|---|
| PD35 V2.0 | 138 mm | 25.4 mm | 88 g |
| PD35 V3.0 | 134 mm | 25.4 mm | 83.5 g |
| Original UC35 | 150 mm | 25.4 mm | 99 g |
| UC35 V2.0 | 140 mm | 25.4 mm | 89 g |
Battery weight and clip position still affect how the light feels in your pocket. If you already have a holster for an earlier model, check the body and tail dimensions. Matching head diameters alone do not guarantee the same fit.
Ergonomic Handling
On the two V2.0 lights, a light press on the tail gives momentary light. A full click keeps it on. The side switch advances through the brightness levels. That split works well when you want to turn the light on by feel, then select the level for the task. With thick gloves, try locating the side switch before you rely on it outside.
Check PriceLED Technology and Output by Version
The older UC35 uses the Cree XM-L2 U2. Fenix switched to the XP-L HI V3 for the UC35 V2.0 and the PD35 V2.0. The PD35 V3.0 uses a Luminus SFT40, and its higher beam intensity is a more useful upgrade for distance than the emitter name alone. The PD35 TAC uses an XP-L V5 and has its own Outdoor and Tactical settings.
If you need a larger light with a stronger rated beam and two tail controls, our Fenix TK16 Review covers the TK16 V2.0 and its different 21700 battery setup.
Maximum Lumen Output
In the Fenix PD35 vs UC35 comparison, the output figure is a useful starting point once you have the exact model. A 1,000-lumen PD35 TAC and a 1,000-lumen PD35 V2.0 give you different beam reach and control layouts. For work at arm’s length, I would pay more attention to the low modes and where the buttons are.
| Model | Peak output | Rated distance |
|---|---|---|
| PD35 TAC | 1,000 lumens | 200 m |
| PD35 V2.0 | 1,000 lumens | 250 m |
| PD35 V3.0 | 1,700 lumens | 357 m |
| Original UC35 | 960 lumens | 200 m |
| UC35 V2.0 | 1,000 lumens | 266 m |
Beam Distance and Coverage
The PD35 V2.0 reaches a rated 250 meters at 15,600 candela. The UC35 V2.0 reaches 266 meters at 17,700 candela, although both have the same peak lumen rating. The PD35 V3.0 is the longer-reaching choice at 357 meters and 31,900 candela. Candela measures the strongest part of the beam. It helps explain why two lights that produce the same total amount of light can reach different distances.
For finding a path marker or checking past the end of a driveway, compare the hotspot and usable spill as well as the rated range. The Nitecore P12GT Review is another useful comparison if a focused beam and a replaceable 18650 are important to you.
Versatile Lighting Modes
The PD35 V2.0 offers 3, 50, 150, 350, and 1,000 lumens plus strobe. The UC35 V2.0 has the same four upper steady settings and a 1-lumen Moonlight mode. Both remember the last steady setting. While the light is on, hold the side button for about half a second to access strobe. The power switch by itself gives momentary or constant light at the selected steady level.
On the PD35 TAC, selecting Tactical mode changes the arrangement. The side switch is disabled for output selection and the tail switch cycles the shorter sequence. If you like starting on the last steady setting, use Outdoor mode on the TAC or use the standard V2.0 controls. Check the exact model before applying the switch instructions from a different PD35.
Impact and Water Resistance
Fenix lists IP68 protection and a one-meter impact rating for both V2.0 models. Their technical data specifies a two-meter water rating. Those ratings apply with the light properly assembled. Inspect the seal when you remove the tailcap and close the port cover on the UC35 after charging. If it’s wet, dry the outside before opening the battery compartment.
Check PriceBattery Compatibility
The PD35 and UC35 versions discussed here can use a compatible 18650 Li-ion battery or two 3-volt CR123A primary lithium cells. Check your manual for the recommended battery shape. In particular, the UC35 V2.0 needs a suitable button-top 18650. Fenix’s ARB-L18 series is the reference for fit. Two disposable CR123As are a backup power option and must stay out of chargers.
If you alternate between the two lights, keep a compatible spare rather than assuming every bare 18650 or 16340 will work. Cell voltage, protection and contact shape all matter. A fresh 18650 of the type used for the published test is the best basis for comparing the runtime figures.
Runtime Comparison
For Fenix PD35 vs UC35 runtime, compare the modes you’ll actually use. The lowest modes are different. The PD35 V2.0’s 430-hour Eco rating is at 3 lumens, and the UC35 V2.0’s longest rating is at 1 lumen. When comparing a light for walking, the shared 150-lumen setting tells you more than either maximum runtime.
| Steady mode | PD35 V2.0 | UC35 V2.0 (3,500 mAh chart) |
|---|---|---|
| Turbo | 1,000 lm, 2 hr 50 min total | 1,000 lm, 2 hr 15 min total |
| High | 350 lm, 5 hr 10 min | 350 lm, 4 hr 10 min |
| Medium | 150 lm, 12 hr 25 min | 150 lm, 10 hr 40 min |
| Low | 50 lm, 29 hr 30 min | 50 lm, 28 hr 10 min |
| Eco or Moonlight | 3 lm, 430 hr | 1 lm, 800 hr |
Turbo runtime includes output reductions. Both lights can dim when they get hot or as the battery runs down, so the figure is total runtime in that mode. The original UC35 V2.0 chart uses the 3,500 mAh kit battery. A later manual for the 3,400 mAh kit rates Moonlight at 750 hours and Turbo at 2 hours 5 minutes. Use the chart that matches your kit.
Charging Capabilities: Built-In vs. External
UC35 and UC35 V2.0. Switch the light off, uncover the Micro-USB port and plug in a suitable cable with a compatible 18650 installed. The UC35 V2.0 side indicator is red during charging and green when full. Refit the port cover when you unplug it. If the indicator never comes on, our UC35 V2.0 charging troubleshooting guide covers checking the cable, port and battery contacts.
PD35 TAC, V2.0 and V3.0. The flashlight has no charging port. Use the port on the removed 18650 if that battery has one, or charge it in a compatible external Li-ion charger. The latest battery shown on Fenix’s PD35 V3.0 product page has USB-C. Earlier bundles can include a Micro-USB battery. Look at the battery itself before packing a cable.
PD35R. This model has an in-body USB-C port and a pair of tail buttons. It is the successor Fenix identifies for the UC35 V2.0. It delivers a rated 1,700 lumens and 353 meters on the specified rechargeable battery. With disposable CR123As, Fenix says Turbo is disabled.
Battery Status and Protection
The V2.0 side switches provide a battery-level indication when the light starts with the supported Fenix battery. If the indicator warns of low voltage, select a lower setting or swap in a charged cell when practical. A step down after prolonged high output can also be the thermal protection doing its job. If output stays low after a recharge and the light has cooled, check the battery seating and the accessible contacts.
Verdict: Battery and Charging
| Flashlight | Charging connection | Backup power |
|---|---|---|
| PD35 TAC, V2.0 or V3.0 | Remove the 18650. Use its own USB port if present, or a compatible external charger. | Two disposable CR123A |
| UC35 or UC35 V2.0 | Micro-USB on the flashlight. Leave the compatible 18650 in place. | Two disposable CR123A |
| PD35R | USB-C on the flashlight. Leave the compatible 18650 in place. | Two disposable CR123A, with lower maximum output |
I’d choose the UC35 V2.0 if I already had Micro-USB in my kit and wanted a light I could plug in as a unit. I’d choose the PD35 V3.0 if a stronger beam and a shorter body mattered more. If I wanted an in-light USB-C port and liked tail-only controls, I’d look at the PD35R separately.
Portability and Everyday Carry
| Model | Length and bare weight | Carry advantage |
|---|---|---|
| PD35 V2.0 | 138 mm, 88 g | Slim aluminum body and a 3-lumen Eco mode |
| PD35 V3.0 | 134 mm, 83.5 g | Shortest of these four models and the strongest rated throw |
| Original UC35 | 150 mm, 99 g | Micro-USB charging with more length in the hand |
| UC35 V2.0 | 140 mm, 89 g | Nearly the same size as the PD35 V2.0, with in-light charging |
In the Fenix PD35 vs UC35 comparison, the PD35 V3.0 takes up the least space lengthwise. If you routinely work out of a vehicle or have a fixed charging station, the UC35’s in-light port may save more effort than the few millimeters you gain with the PD35. For more carry formats, see our everyday carry flashlight guide.
Real-World Usage Scenarios
- Camping and home use. Moonlight on the UC35 V2.0 is useful inside a tent or for finding gear without lighting up a whole room. Both V2.0 lights also offer a 50-lumen setting for tasks that need more light.
- Walking and outdoor checks. Use a steady mid-level setting for the walk and save Turbo for a quick look farther ahead. I prefer the PD35 V3.0 when I expect to check distant signs or objects regularly.
- Frequent use away from home. Decide whether you are more likely to have access to USB power or to carry a spare cell. A rechargeable 18650 you can swap quickly can matter more than the maximum lumen rating.
Price Comparison and What to Look For
The price of a Fenix PD35 vs UC35 setup depends on what comes with the light. Compare the flashlight, the battery and any charger you need to buy separately. Check the model name printed on the light. Two bundles can include different batteries or cables even if the flashlight generation is the same.
| Model | What you’ll need | Where the value is |
|---|---|---|
| PD35 V2.0 or V3.0 | Compatible 18650 and the right charging cable or external charger | A small body and a removable cell you can swap |
| UC35 V2.0 | Compatible 18650 and a Micro-USB cable | Charge the battery with the flashlight assembled |
| PD35R | Compatible 18650 and a USB-C cable | In-light charging and two tail controls |
If you’re comparing for a specific job, our guide to choosing a flashlight explains what to look for in beam, switches, carry size and battery type.
Different Versions of the Fenix PD35 and UC35
The name and the generation are part of the spec. The 850-lumen PD35 and 960-lumen UC35 were earlier designs. The 1,000-lumen PD35 TAC is separate from the 1,000-lumen PD35 V2.0. And if you’re looking for the in-light USB-C successor to the UC35 V2.0, the model name to look for is PD35R.
| Model | Output and throw | Lowest-mode runtime | Cells and charging | Controls and protection | Published weight | Product kit |
|---|---|---|---|---|---|---|
| Original PD35 (2013) | 850 lm, 185 m | 140 hr at 10 lm | 18650 or two CR123A, external charging for rechargeable cells | Tail and side, five levels plus strobe, IPX8 | 87 g without battery | — |
| PD35 TAC | 1,000 lm, 200 m | 140 hr at 8 lm in Outdoor mode | 18650 or two CR123A, external charging for rechargeable cells | Outdoor or tail-only Tactical mode, IPX8 | 89 g without battery | — |
| PD35 V2.0 | 1,000 lm, 250 m | 430 hr at 3 lm | 18650 or two CR123A, remove the rechargeable cell to charge | Tail and side, five levels plus strobe, IP68 | 88 g without battery | — |
| PD35 V3.0 | 1,700 lm, 357 m | 230 hr at 5 lm on the Fenix Lighting page (300 hr in a separate Fenix chart) | 18650 or two CR123A, charge the removable cell separately | Tail and side, five levels plus strobe, IP68 | 83.5 g without battery | Check Price |
| Original UC35 | 960 lm, 200 m | 150 hr at 14 lm | 18650 or two CR123A, Micro-USB on the flashlight for a compatible Li-ion cell | Tail and side, five levels plus strobe, IPX8 | 99 g without battery | — |
| UC35 V2.0 | 1,000 lm, 266 m | 800 hr (3,500 mAh chart) or 750 hr (3,400 mAh chart) at 1 lm | 18650 or two CR123A, Micro-USB on the flashlight for a compatible Li-ion cell | Tail and side, five levels plus strobe, IP68 | 89 g without battery | Check Price |
| PD35R | 1,700 lm, 353 m | 100 hr at 10 lm | 18650 or two CR123A, USB-C on the flashlight for a compatible Li-ion cell | Dual tail switches, five levels plus strobe, IP68 | 140 g with battery | — |
| PD35 kit with CR123A batteries | Check Price | |||||
The Best Fenix Flashlight Review: Most popular 10 List covers more Fenix models if you also want a headlamp, a smaller everyday light, or a different tactical format. For another slim model with built-in Micro-USB, our Fenix UC30 vs UC35 comparison shows how the original UC35 and V2.0 compare with the UC30.
My Recommendation
In this Fenix PD35 vs UC35 comparison, my choice for frequent pocket carry and outdoor reach is the PD35 V3.0. I’d pick the UC35 V2.0 for a user who wants to leave the battery inside while charging and has Micro-USB on hand. If you already have a PD35 V2.0 or the original UC35, the practical reason to change is the port, reach or switch you need most often.
Frequently Asked Questions
- Which flashlight is better, the Fenix PD35 or the UC35? The PD35 V3.0 offers more rated reach and a shorter body. The UC35 V2.0 has a lower Moonlight mode and charges in the light by Micro-USB. Among the two V2.0 versions, the UC35’s rated throw is slightly greater.
- Does the Fenix PD35 or UC35 have a longer battery life? It depends on the setting and cell. Compare the two V2.0 models at an equal output. The 1-lumen Moonlight figure for the UC35 V2.0 and the 3-lumen Eco figure for the PD35 V2.0 describe different levels.
- Can I use the same battery for both flashlights? A suitable Fenix 18650 can work in both if it meets each model’s requirements. Both also support two CR123A primary cells for operation. Never try to charge disposable CR123A batteries.
- Which flashlight is more durable for outdoor use? Both V2.0 models have IP68 protection and a one-meter drop rating. With the UC35 V2.0, remember to reseat its charging-port cover after charging.
- Is the Fenix UC35 worth it if I already have an external charger? I would pick it if charging with the cell in place is useful to you. If you already carry charged spares and prefer a shorter light, the PD35 V3.0 may fit your routine better.