Acebeam E75 Nichia 519A 5000K


Brand/model Acebeam E75
LED 4*Nichia 519A 5000K CRI90
Maximum lumens 3,000 lm
Maximum beam intensity 11,025 cd
Maximum throw 210 m
Battery 1*21700
Onboard charging Yes (USB-C)
Material Aluminium
Modes 6
Blinkies Strobe
Reflector Smooth
Waterproof IP68
Review date September 2023


The Acebeam E75 is a 21700 sized torch with four emitters, a strike bezel, built-in USB-C charging, battery level indicators, and an electronic side-switch. This particular version has Nichia 519A 5000K 90 CRI emitters. It is also available in cool white with a 6500K colour temperature.

I have reviewed multiple EDC torches by Acebeam and the build quality has been excellent. I am keen to see what the quality is like for the E75. Acebeam’s drivers are often efficient and have excellent output regulation.

I was not sure what to think of the Acebeam E75 before it arrived. Do we have too many options with quad emitters? Emisar D4V2, D4SV2, D4K and Sofirn IF25A come to mind.

But after using it for a few weeks, could this be one of the best EDC torches for 2023?!

Acebeam provided this torch for review. I have not been paid for this review nor have I held back my opinions of this torch.


The Acebeam E75 comes in a dark gray box with an outline of the torch on the front.

Acebeam E75 packaging Acebeam E75 packaging

Acebeam E75 packaging Acebeam E75 packaging

The following was included in the box:

  • Acebeam E75.
  • Acebeam IMR21700NP-500A 5000mAh battery.
  • USB-A to USB-C cable.
  • Two spare o-rings.
  • Spare USB cover.
  • Lanyard.
  • User manual.

Acebeam E75 packaging Acebeam E75 accessories

Acebeam E75 user manual

Torch in use

The Acebeam E75 is a perfect fit for my hand.

Acebeam E75 in use 1

The pocket clip nestles in my fingers while the CNC’d metal switch cover sits under my thumb.

Acebeam E75 in use 2

I decided to take the Acebeam E75 with me while on holiday with family in Cairns, Australia. We flew with carry-on luggage so I wanted one torch with the right combination of flood and throw for general use.

I even brought the torch along while visiting the Great Barrier Reef.

Acebeam E75 holiday

I used the E75 as a bedside lamp by tailstanding it on a bedside table and by setting it to Moonlight mode. The beam bounced off the ceiling and lit the room up dimly. This was a nice alternative to the bright lights in the hotel room.

I also used the E75 while walking around the beaches and mountains at night with my family.

There is a reversible pocket clip that allows the torch to be carried in a pocket with the head up or the head down. It could also be clipped onto the straps of a backpack for quick access while hiking through a rainforest.

The magnet in the tailcap is very strong. It allows the torch to be used as a work light.

Build quality

The Acebeam E75 is made of aluminium, has a matte anodised finish, and comes in four colours: Black, Gray, Teal and Green.

I like the elegant feel of the diagonal lines on the tube and the vertical lines on the tailcap. There is plenty of grip, especially from cooling fins, and there are no sharp edges.

Acebeam E75 side

There is a wide lanyard hole in the side of the tailcap that allows the torch to tailstand while a lanyard is attached.

Acebeam E75 front Acebeam E75 left

Acebeam E75 back Acebeam E75 right

The torch came with a protective film applied to the lens. I removed the film to reveal a glass lens with an anti-reflective coating.

Acebeam E75 warning

A CNC’d metal side switch is quiet when clicked and it has a slight tactical feel. Sometimes side switches can feel squishy or too clicky. I think that Acebeam has struck the right balance with this one. It feels firm and has a nice amount of movement.

Acebeam E75 closeup-battery-status

There are four battery level indicators around the side switch. The indicators are a bit bright on the sample that I received. This could be annoying when using the Moonlight mode.

Acebeam has already listened to feedback and revised the battery level indicators so that they are now dimmer.

The battery level indicator ring reminds me of the one in a WildTrail WT3M but I prefer the design of the one in the E75. The quality looks better in person.

Square-cut threads came well lubricated and the tailcap turns smoothly.

Acebeam E75 threads

The tailcap is a delight to use. The grip makes it easy to turn the tailcap and the magnet in the tailcap helps pull the battery out.

Acebeam E75 tailcap

A spring in the tailcap sits in front of a magnet. There are double springs at the head of the torch to help keep the battery secure.

Acebeam E75 spring

I like the attention to detail that Acebeam has taken while designing the USB cover for the built-in USB-C charger. The head of the torch has a small cut-out to make it easier to use a thumbnail and index finger to pinch a small tab on the USB cover and pull it out.

Acebeam E75 closeup-charging

The pocket clip is securely attached to the torch with two 1.5 hex screws.

I used a Mitutoyo 500-196-30 Digital Caliper to take measurements. One screw is 5.14mm long while the other is 5.18mm. Both screws bottom out in the holes. There is very small gap between the screw heads and the pocket clip. Despite the gap, that is barely visible, the pocket clip is tightly pressed against the torch and there is no side-to-side play. This could be by design so I won’t file the screws down to see what happens.

Acebeam E75 pocket-clip-screws-1 Acebeam E75 pocket-clip-screws-2

The USB cover is attached to the body of the tube with one T5 screw. The screw sits flush with the tube. The pocket clip must be removed first to access the T5 screw.

Acebeam E75 usb-screw-1 Acebeam E75 usb-screw-2

I like how the pocket clip can be removed and how the USB cover is securely attached. Kudos to Acebeam for throwing in a spare USB cover!

LED, bezel, lens, reflector and beam

The Acebeam E75 comes with four Nichia 519A 5000K emitters. It is also available with four 6500K emitters. Acebeam have not stated who makes the 6500K emitters.

It has a metal bezel, a glass lens with a blue anti-reflective coating, and a smooth reflector.

Acebeam E75 closeup emitters Acebeam E75 closeup bezel

The bezel is threaded and has a small amount of glue. I was able to break the glue by using a strap wrench. Please don’t attempt this. This may void the warranty.

Acebeam E75 closeup emitters

The bezel was pressing the glass lens down against an o-ring that sits around the edge of the reflector. The reflector can be popped out easily after removing the o-ring.

Acebeam E75 closeup emitters

Each emitter has a centering gasket.

Acebeam E75 closeup emitters

Torch enthusiasts might want to dedome the Nichia 519A emitters. The colour temperature may decrease, the light output may drop, the beam may become rosier and the beam distance may increase slightly when the domes are removed from a Nichia 519A emitter.

Please do not attempt to remove the domes unless you know what you are doing. This may void the warranty and you could damage the torch. The emitters might stop working.

I was a bit concerned about whether removing the domes would create a flowery pattern, as is the case when swapping Samsung LH351D emitters with slightly smaller Luminus SST20 emitters behind a quad TIR optic. However, u/Heady1898 successfully dedomed the Nichia 519A emitters in their Acebeam E75 and posted the results on Reddit. The beam pattern looks ok after the emitters have been dedomed!

CCT, CRI, and duv

I have taken Correlated Colour Temperature (CCT) and Colour Rendering Index (CRI, RA of R1-R8) measurements with the torch positioned one metre away from an Opple Light Master Pro III (G3) for Low, Med and High and two metres away for Turbo.

The CCT is around 4500K. The CRI is around 97.

The Delta u, v is slightly positive (green) on lower modes and it is close to pure white on Turbo.

The beam produced has a circular hot spot and a square spill due to the smooth reflector.

Mode CCT (K) CRI (Ra) x y Duv
Low 4465 98.1 0.3628 0.3683 0.0016
Med1 4469 97.9 0.3627 0.3681 0.0015
Med2 4525 97.8 0.3606 0.3665 0.0015
High 4577 97.4 0.3588 0.3649 0.0014
Turbo 4637 96.4 0.3561 0.3586 -0.0007

Calculate Duv from CIE 1931 xy coordinates

Dimensions and size comparison


I took the following measurements using a digital caliper.

Measurement Unit (mm)
Length 129.66
Head diameter 35.06
Tube outside diameter 28.04
Tube inside diameter 22.02
Tail diameter 28.05
Button diameter 11.43
USB port width 12.97
USB port height 7.00
USB port depth 3.42
Battery length 74.33
Battery diameter 21.36


I took the following measurements using a digital scale.

Weight Unit (g)
Torch 101.0
Battery 52.82
Torch with battery 153.82

Size comparison with its competition

From left to right: Acebeam E75, Emisar D4SV2 26800, Sofirn IF25A, WildTrail WT3M

Acebeam E75, Emisar D4SV2 26800, Sofirn IF25A, WildTrail WT3M

From left to right: Acebeam E75, Emisar D4SV2 26800, Sofirn IF25A, WildTrail WT3M

Acebeam E75, Emisar D4SV2 26800, Sofirn IF25A, WildTrail WT3M

User interface

The Acebeam E75 is controlled by an electronic side-switch.

There are four modes in the main group: Low, Med1, Med2 and High.

And there are shortcuts to Moonlight, Turbo and Strobe.

State Action Result
Off Press and hold for 0.5 seconds Moonlight
Off Click On (mode memory)
Off Two clicks Turbo
Off Three clicks Strobe
Off Press and hold for > 3 seconds Lock
Locked Press and hold for < 3 seconds Battery level indicators flash green and red
Locked Press and hold for > 3 seconds Unlock and enter Moonlight
On Click Off
On Hold Cycle (Low, Med1, Med2, High)
On Two clicks Turbo
On Three clicks Strobe
Turbo Two clicks On (mode memory)
Strobe Two clicks Turbo


Lock and unlock the torch by holding the switch for 3 seconds from off.

The emitters will flash three times and turn off to indicate that the torch is locked.

The emitters will flash three times and enter Moonlight to indicate that the torch is unlocked.

Mode memory

Low, Med1, Med2 and High are memorised.

Moonlight, Turbo and Strobe are not memorised.


Strobe has a frequency of 10 Hz.

Battery level indicator

The battery level indicator flashed red lights rapidly when the voltage was low.

Colour Battery level
Green Level > 20%
Red 10% ≥ Level ≤ 20%
Red flash Level < 10%

Low voltage protection

There is low voltage protection. The emitters turned off at 2.70V and the current cuts out.

It is impressive when the driver does what the manufacturer says it does. The user manual states that the torch will turn off when the voltage drops below 2.70V.

I tested low voltage protection by connecting the driver of the torch to a bench power supply and then by lowering the voltage from 4.2V to 0V.


I did not notice any visible PWM (flickering).

What I like about the UI

  • It is simple to use.

What could be improved

  • It would be nice if the torch entered Turbo immediately when performing two clicks from off. Currently it goes into the last memorised mode after the first click and then it enters Turbo after the second click.

Batteries and charging


The included button top Acebeam IMR21700NP-500A 5000mAh 3.7V Li-ion cell arrived with a voltage of 3.57V. It came with a bit of plastic at the end to prevent accidental activation while in transit.

Acebeam E75 closeup-insulating-film Acebeam E75 battery

I tried the following cells in the Acebeam E75:

Cell Type Voltage Top Compatible?
Acebeam 21700 5000mAh Li-ion 3.7V Button Yes
Weltool UB21-50 21700 5000mAh Li-ion 3.7V Button Yes
Samsung 40T 21700 Li-ion 3.7V Flat Yes


Built-in USB-C charging was convenient while travelling. I was able to top up the battery by using a USB-C charging cable that I brought for my phone. It is nice when all of my devices can be charged with one USB-C cable.

Power supply: PinePower Desktop USB-C
USB Meter: AVHzY CT-3
Room temperature: 15 C

Acebeam E75 charging profile

I charged the included battery from 2.90V to 4.18V using the built-in charger. It took about 3 hours 30 minutes to fully charge.

The charging rate gradually rose to 5V 1.9A and then dropped off.

The four indicator LEDs went red and blinked while charging. The indicator LEDs turned green when charging was complete.

Power supply compatibility

I tried the following power supplies with the built-in USB-C charger:

Power supply USB Type Protocol Does it charge?
Apple 61W Power Adapter USB-C PD Yes
Google Pixel Power Adapter USB-C PD Yes
PinePower Desktop USB-C PD Yes
PinePower Desktop USB-A QC Yes
PinePower Desktop USB-A Yes

USB-C to USB-C charging works.


Specifications from the manual:

FL1 STANDARD Turbo High Med2 Med 1 Low Moonlight Strobe
Output (lumens) 3,000 + 1,000 + 150 1,000 + 150 450 150 30 1 2,400 + 1,000
Runtime 1min + 1h 40min + 1h 1h 45min + 1h 4h 40min 16h 2days 12h 26days 15min + 3h
Beam Distance (metres) 210 128 82 58 185
Beam Intensity (cd) 11,025 4,096 1,681 841 8,556

Lumen measurements

Note: Lumen measurements may be off by 10% with my DIY lumen tube.

I used a UNI-T UT210E clamp meter to measure the current at turn on.

Mode Amps at start Specs Lumens @turn on Lumens @30 sec Lumens @10 min
Low 0.06 A 30 38 37 37
Med1 0.28 A 150 179 176 174
Med2 0.86 A 450 512 506 496
High 2.46 A 1,000 + 150 1,268 1,240 1,184
Turbo 11.47 A 3,000 + 1,000 + 150 2,749 3,354 1,157

Moonlight was too low for my DIY lumen tube to detect.

The output took a few seconds to ramp up on Turbo.

Standby drain

110 µA

Runtime graphs

I used my own DIY lumen tube with a TSL2591 sensor and forked bmengineer’s project RuTiTe to record runtimes.

The room temperature was approximately 10 C.

Acebeam E75 runtime graph

Acebeam E75 first 2 hours runtime graph

Acebeam E75 first 10 minutes runtime graph


Here is a summary of the runtime results:

Mode User manual Runtime Turn off Final voltage
Turbo 1min + 1h 40min + 1h 1h 32min 3s 4h+ 2.82
High 1h 45min + 1h 3h 13min 39s 4h+ 2.85
Med2 4h 40min 5h 43min 12s 6h+ 2.85
Med1 16h 16h 16min 54s 16h 16min 54s 2.90
Low 2days 12h 2days 12h+ 2days 12h+ 3.38

“Runtime” is the time until the output reduces to 10% of the output at 30 seconds (as per the ANSI/PLATO FL1 2019 Standard).

“Turn off” is the time until my DIY lumen tube no longer detects more than 1 lumen.

“+” indicates that the light remained on after recording had stopped.

Moonlight was too low for my DIY lumen tube to detect.

Turbo turned off shortly after four hours. I was able to use Moonlight and Low modes but the light would not enter Med1, Med2, High or Turbo while the voltage was low.

Turbo maintained over 1,000 lumens for 1h 32min 3s but fell slightly short of the 1h 40min claim. The difference could be due to the colder testing environment at my home.

Overall, the runtime results were mostly better than expected and the sustained output is impressive. I love seeing those flat lines in runtime graphs!


I took lux measurements with a UNI-T UT383BT at 30 seconds. Low, Med1, Med2, High and Turbo were measured at five metres.

Mode Specs (cd) Specs (m) Candela measured (cd) Distance (m)
Low 25 10
Med1 841 58 550 46
Med2 1,681 82 1,775 84
High 4,096 128 4,525 134
Turbo 11,025 210 11,900 218


I went to a local park and aimed the Acebeam E75 at a tree 70 metres away while using Turbo.

Beamshots were taken using a Sony RX100M2 using 3.2", f3.2, ISO 100, 5000K WB.

Acebeam E75 (Turbo)

Acebeam E75 Turbo beamshot

Olight Baton 3 Pro Max (Turbo)

Olight Baton 3 Pro Max Turbo beamshot


NEXTORCH TA30C MAX High beamshot

Cyansky P25 V2.0 (Turbo)

Cyansky P25 V2.0 Turbo beamshot


The Acebeam E75 is a great 21700 sized torch for general use. It has a really nice beam!

The Nichia 519A 5000K emitters produce warm beam with a colour temperature closer to 4500K and they have a high CRI. A cool white, 6500K, option is also available.

The build quality is excellent, the user interface is simple, and look at those runtimes! The driver is efficient and has great output regulation.

Battery level indicators are a bit bright but Acebeam has already fixed this on newer batches of the E75.

This is the type of torch that I am comfortable giving to family and friends. It is a complete kit.


  • Excellent build quality.
  • Warm colour temperature (4500K).
  • High CRI.
  • Great runtimes and output regulation.
  • Well balanced beam (flood and throw).
  • Built-in USB-C charging.
  • Strong magnet.
  • Reversible and removable pocket clip.


  • Battery level indicators are bright (fixed).


The Acebeam E75 is AU$149.95 from and at the time of writing.

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