A powerful flashlight can become surprisingly annoying when getting the right amount of light means cycling through brightness levels you rarely use.
Price: $109.95
Where to Buy: Amazon
The Fenix PD36R ACE tackles that problem from an unusual direction. It delivers a manufacturer-rated 3,000 lumens and a maximum beam distance of 415 meters, but raw output is not its most interesting feature. This flashlight lets you choose how many brightness levels are available.
Fenix calls the system Advanced Command Edition, or ACE. A protected SET button lets you configure the light for Turbo only, three brightness levels, or the full five-level range. That makes it useful for someone who wants low-output options around a campsite and someone who wants a simpler route to maximum output.
3,000 lumens, with a caveat
The PD36R ACE uses a Luminus SFT70 Gen2 LED. Fenix rates it for a maximum of 3,000 lumens and a beam distance of 415 meters, or 1,362 feet. Its five standard brightness levels are 30-lumen Eco, 150-lumen Low, 350-lumen Medium, 1,000-lumen High, and 3,000-lumen Turbo.
Independent testing lends support to those headline figures. 1Lumen measured 3,253 lumens immediately after activation and 2,972 lumens at 30 seconds. It also measured a 414-meter beam distance at 30 seconds, essentially matching Fenix’s specification.
That does not mean the flashlight maintains 3,000 lumens for hours. In 1Lumen’s runtime test, the main Turbo reduction occurred between approximately 30 and 70 seconds, and output was about 1,062 lumens at 10 minutes. High mode held more than 1,000 lumens for approximately 13 minutes before reducing output.
Fenix lists a Turbo runtime of 3 hours and 2 minutes under ANSI/PLATO FL1 methodology. That figure includes operation after the flashlight steps down. It should not be read as three hours at 3,000 lumens.
The ACE system removes modes
The PD36R ACE has a mechanical tail switch for momentary or constant activation and a second switch near the head for changing brightness. Its defining control is tucked beneath a rotating protective collar.
Turn the collar to reveal the USB-C charging port and SET button. The SET button offers three configurations: Turbo only; Eco, Medium, and Turbo; or all five brightness levels. Strobe is enabled by default but can be disabled separately. SOS is available only in the five-level configuration.
The benefit is straightforward: if five brightness levels feel excessive, you do not have to cycle through all of them. The tradeoff is that changing configurations requires opening the collar, so it makes more sense to set up the light before a task than to adjust its interface in the middle of one.
Replaceable battery, specific requirements
The PD36R ACE includes a protected 5,000mAh Fenix ARB-L21-5000 V2.0 21700 lithium-ion battery. Fenix specifies runtimes of 63 hours 25 minutes at 30 lumens, 21 hours 49 minutes at 150 lumens, 8 hours 49 minutes at 350 lumens, and 3 hours 28 minutes at 1,000 lumens. As with Turbo, standardized runtime figures can include time after output has decreased.
Charging takes place through the USB-C port beneath the collar. Fenix estimates about three hours for a full charge; 1Lumen measured 2 hours 39 minutes in its test.
A removable battery means you can replace a worn cell instead of replacing the flashlight. But do not assume any 21700 battery will work. Fenix prohibits unprotected cells, and 1Lumen found that a shorter flat-top Samsung 40T did not make proper contact. Check both protection and physical fit before buying a spare.
Practical size, one limitation
The PD36R ACE measures 146 mm long, with a 30 mm head and 26 mm body. Fenix lists its weight at 181.6 grams with the battery installed. It can ride in a jacket pocket, work bag, vehicle kit, holster, or backpack, but it will feel substantial next to a tiny everyday-carry flashlight.
Its body is made from hard-anodized A6061-T6 aluminum. Fenix specifies IP68 protection and one-meter impact resistance, while GearJunkie’s hands-on testing found the construction and machining solid.
One limitation is easy to overlook on a spec sheet: the PD36R ACE cannot stand upright on its tail because the rear switch protrudes. Both 1Lumen and GearJunkie noted the omission. It matters if you like to aim a flashlight at the ceiling to light a room during a blackout.
Throw over color accuracy
The PD36R ACE produces a relatively cool-white beam, rated at approximately 6500K; 1Lumen measured 6264K and a CRI of 69.
That may be a reasonable tradeoff for searching a trail, lighting a yard, or checking equipment at a distance. It is less appealing when accurate colors matter, such as when inspecting paint or distinguishing wire colors. Anyone who prefers warmer, more natural-looking light should keep that in mind.
The PD36R ACE makes the strongest case for someone who wants one rechargeable flashlight for several jobs. Its measured output and throw closely match Fenix’s headline specifications, while its configurable controls let you keep the full range of modes or strip the interface down to the ones you use.
It is not a tiny EDC light. It cannot tail-stand, its cool-white beam is not designed for color accuracy, and Turbo quickly steps down as the light heats up. Spare batteries also need careful selection. If those compromises work for you, the PD36R ACE offers substantial reach, useful lower modes, and a replaceable battery without forcing you to navigate the same five brightness levels on every task.
Price: $109.95
Where to Buy: Amazon
The 3,000-lumen rating gets your attention. Being able to decide how much of the flashlight’s interface you actually use is the more practical reason to consider it.
