Review: ACEBEAM K75

roma58 · 2019-09-04T19:08:39.000Z

ACEBEAM K75

The ACEBEAM K75 was purchased by NKON: https://eu.nkon.nl/ which I thank for the treatment offered.
For the technical characteristics it is possible to consult the page: http://www.acebeam.com/k75
For more information on ACEBEAM you can consult the Official Facebook page: AcebeamWorld

The packaging:

The ACEBEAM K75 came to me inside a cardboard box protected by shaped foam. Inside the package besides the ACEBEAM K75 I found a card with some warnings on the use of the K75, four 3100 mAh Acebeam batteries (ARC18650H-310A), handle, bilingual manual, lanyard, 2x O-ring replacement, warranty and warnings.
Surely the foam protects the torch well, but a hard plastic case like a briefcase would have been a better solution and suitable for the torch class.

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The ACEBEAM K75 is currently the standard LED flashlight with the best performance regarding the length of the beam and therefore of the illuminated meters. The ACEBEAM K75 is equipped with an electronic lock as well as a tripod socket and is recommended, in particular, for searching, saving and long-range lighting. At the center of the deep dish we find the LUMINUS SBT-90 GEN2 LED which thanks to four 18650 Li-ion batteries and a light output of 6300 Lumens manages to illuminate up to a distance of 2500 meters with a peak beam intensity of 1.562.500 candles.
The ACEBEAM K75 has two modes of use: POWER and ECO. With the first we get the maximum available power of 6300 lumens while with the second we go down to 3000 lumens. The ACEBEAM K75 can also be purchased with the LUMINUS SBT-90 LED with red color.

Features:

Max output 6300 lumens
Max beam distance 2500 meters
Weight: 843.8g without batteries
Size: 218mm (Length) x 126mm (Head dia.) x 53mm (Tube dia.)
Utilizes one LUMINUS SBT-90-GEN2 LED with excellent performance
Maximum output up to 6300 lumens with monstrous 2500 meters far-reaching beam distance
ECO and POWER mode switch toggles between Everyday and Search-and-Rescue settings
Powered by 4 x 18650 rechargeable Li-ion batteries (Excluded)
4 x ACEBEAM IMR 3100mAh 3.6V 18650 Lithium Ion Batteries (Recommended)
One-handed, one-button for easy and fast operation
Highly efficient constant current circuit design (Non-PWM)
Intelligent temperature controller is used to adjust brightness and prevent overheating
Rear tripod receptacle brings extra functionality
Battery level indicator lights for easy power monitoring
Lockout mode prevents accidental activation
Toughened ultra-clear mineral glass lens with an anti-reflective coating
Integrated Precision Digital Optics Technology provides extreme reflector performance
Sturdy aerospace-grade aluminum body with military grade type III hard-anodized finish
IPX68 waterproof (2 meters submersible)
Impact resistance to 1 meter
NOTE: In order to achieve POWER&ECO modes, the K75 must be installed with 4 x 18650 high drain batteries that can produce at least 10 Amps of current.
There will be only ECO mode working when use the batteries current ＜10 Amps.

POWER Mode:
Ultra-Low: 7 lumens; 7.5 days
Low: 120 lumens; 40000cd; 400 meters; 31 hours
Mid 1: 380 lumens; 99856cd; 632 meters; 16 hours
Mid 2: 1250 lumens; 289982cd; 1077 meters; 5 hours 15 minutes
High: 2500 lumens; 559504cd; 1496 meters; 2 hours 15 minutes
Turbo: 6300 lumens; 1562500cd, 2500 meters; 1 hour 45 minutes
Strobe: 3000 lumens; 3 hours 15 minutes

ECO Mode:
Ultra-Low: 7 lumens; 7.5 days
Low: 120 lumens; 40000cd; 400 meters; 31 hours
Mid 1: 250 lumens; 69960cd; 529 meters; 21 hours
Mid 2: 600 lumens; 189660cd; 871 meters; 10 hours 30 minutes
High: 1700 lumens; 389376cd; 1248 meters; 3 hours 30 minutes
Turbo: 3000 lumens; 679800cd, 1649 meters; 1 hour 45 minutes
Strobe: 3000 lumens; 3 hours 15 minutes

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The Manual :

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The Torch:

The ACEBEAM K75 shows an imposing body but less than that of other torches of the same type as for example the BLF GT or the Astrolux MF04. The K75 wears well and thanks to the handle included in the package, which can be inserted into the hole for the tripod in two different ways, it is less problematic to keep it in hand when used at maximum power. The quality of construction is remarkable, as in the characteristics of ACEBEAM.

The ACEBEAM K75 is composed of 4 parts: Head, Body, Battery Holder and Tail.

The head of the K75 is partly smooth and has a diameter of 126 mm. At the center stands the impressive LED LUMINUS SBT-90 GEN2. The lens is in mineral glass with an anti-reflective coating. On the large head of the torch we find various cooling fins and a slightly crenelated bezel while in the lower part we find the only switch the torch has. There is also a tripod socket and notification LED.

The ACEBEAM K75's power button is slightly raised and is of a good size. With this switch we're going to completely manage the user interface (UI). The torch has an electronic and manual lock (by slightly unscrewing the tail). The click of the button is silent and is activated with the right pressure.

The power indicator, on the side of the power button, shows the battery voltage. The low voltage warning remembers when the batteries need to be replaced. This indicator is always illuminated when the ACEBEAM K75 is turned on.

GREEN: battery voltage is ≥ 12.8V
CONSTANT RED: battery voltage between 12.8V ~ 12V
FLASHING RED: battery voltage is <12V
The K75 turns off when the battery voltage is ≤ 11.2V

The non-slip knurling on the body of the K75 is rhomboid in shape. Good quality of the writing as good is the quality of the well-lubricated threads.

The tail cap, in the shape of a "U" has a knurling similar to that present on the body, in the lower part we find the writings of the brand, model, certifications and serial number. It is possible to insert, in the two slots that it has, a cord or a carabiner of a shoulder strap.

The ACEBEAM K75 is powered by 4 18650 Li-ion batteries inserted in the battery carrier supplied.
As a contact under the head we find a gold plated spring of moderate thickness. All circuit contact points are gold plated to provide better conductivity and longer life.
ACEBEAM K75 has tail stand capability.

ACEBEAM K75 alongside the ACEBEAM K70 and the ACEBEAM X65 Mini.

An interesting comparison is the one with the BLF GT.

The peak beam intensity of the ACEBEAM K75 is considerably greater than that of the BLF GT. The ACEBEAM K75 is brighter and has more throw, the BLF GT has a narrower hot spot in addition to having a warmer color temperature.

User Interface (UI):

The ACEBEAM K75 has two modes of use: POWER and ECO.
The user interface (UI) of the Acebeam K75 is simple and reflects the one already seen on other torches in the same house. It is managed by just one switch placed on the side. We have 6 levels plus the Strobe available.
These are the data declared by the house:

POWER mode:
Ultra-Low: 7 lumens; 7.5 days
Low: 120 lumens; 40000cd; 400 meters; 31 hours
Medium 1: 380 lumens; 99856cd; 632 meters; 16 hours
Mid 2: 1250 lumens; 289982cd; 1077 meters; 5 hours and 15 minutes
High: 2500 lumens; 559504cd; 1496 meters; 2 hours and 15 minutes
Turbo: 6300 lumens; 1562500cd, 2500 meters; 1 hour and 45 minutes
Strobe: 3000 lumens; 3 hours and 15 minutes

ECO mode:
Ultra-low: 7 lumens; 7.5 days
Low: 120 lumens; 40000cd; 400 meters; 31 hours
Mid 1: 250 lumens; 69960cd; 529 meters; 21 hours
Mid 2: 600 lumens; 189660cd; 871 meters; 10 hours and 30 minutes
High: 1700 lumens; 389376cd; 1248 meters; 3 hours and 30 minutes
Turbo: 3000 lumens; 679800cd, 1649 meters; 1 hour and 45 minutes
Strobe: 3000 lumens; 3 hours and 15 minutes

ON/OFF
ON: When the light is OFF, single click the switch to turn ON the light and go to the memorized mode;
OFF: When the light is ON, single click the switch to turn OFF the light.

Long Press: 1. When the light is ON, long press the switch to cycle from Low-Mid1-Mid2-Hight, loose the switch to select the mode.
2. When the light is OFF, long press the switch for 0.5 seconds to activate the Ultra-Low mode.

Double Click: When the light is ON/OFF, double click the switch to activate Turbo , and every double click to cycle from Turbo and the memorized mode.

Triple Click: When the light is ON/OFF, triple click the switch to activate Strobe.

Lock/Unlock
Lock: When the light is OFF, long press the switch for 5 seconds, the light is locked after 3 times’ flash;
Unlock: When the light is locked, long press the switch for 5 seconds, the light is unlocked and goes to ultra-low after 2 times’ flash.

K75 has two modes: POWER mode and ECO mode. Exchange between POWER and ECO:
when the light is locked, if the light beam changes from dark to bright and goes out after continuous 10 times’ click, it means the light will go to POWER mode after being unlocked; otherwise, the light will go to ECO mode.

Beam and Runtime:

The beam of the ACEBEAM K75 is powerful and luminous in its spot and ample and usable in the spill. The color is a beautiful white, surely we are below 6500 ° K and there are no strange dominants. I did not notice PWM in the available modes.

Below is a photo taken in Turbo ECO mode at 3000 lumens. The house is located at a distance of 446 meters.

The runtimes were performed indoors, with a temperature of around 27 °C.
For the surveys I used the Dr.Meter LX1330B Luxmeter.

I should point out that the values expressed by the graphs must be taken, above all, as a reference because they are made with means and environmental conditions different from those used in the laboratory.

The tests were done using the "new" batteries supplied with the torch (18650 Li-ion ARC18650H-310A 3100 mAh) charged at 4.18V. I also used a small fan to see the pattern of the discharge curve in conditions of forced ventilation.

Turbo in POWER mode (6300 lm.) Without forced ventilation.
N.B. In this configuration, at a distance of 10 meters, I measured the candles that were found to be in line with those declared by the house.

Turbo in POWER mode with and without ventilation (10 min.). It seems from my test that the two curves are similar and that the descent is timed.

Turbo in ECO mode (3000 lm.) without forced ventilation.

Turbo in POWER and ECO mode without forced ventilation.

Finally the complete graph of the tests done including the HIGH level (2500 lm.) In POWER mode without forced ventilation.

VIDEO Unboxing:

https://www.youtube.com/embed/weuAhE9HMSI

ACEBEAM k75 in the evening:

https://www.youtube.com/embed/bw7OQEM6KLE

Conclusions:

The ACEBEAM K75 did not disappoint my expectations. According to what said by ACEBEAM, for the K75 it was used about a year from design to production and every specification was tested for hundreds and thousands of times before release.
Considering performance in lumens and throw, it remains a torch with acceptable dimensions and weight. Excellent general construction and interesting two POWER and ECO modes of operation. Impressive the beam and therefore the distance reached by the K75 with a very usable and bright side lighting. Surely it is now the reference torch for those looking for a lighting tool for research and rescue to cover long distances. Thank you for reading the review.

richbuff · 2019-09-04T21:08:23.000Z

Thank you for your comprehensive and valuable review of this king of throw.

I received my K75 26 hours ago, and I am happy with the performance increase over the TN42.

My observations: Compared to X65: Narrower beam, but throws further.

Compared to TN42: Some more of everything. Some more emitter, some more head diameter, some more beam width, some more throw, some more light on the target.

Again, thank you!

Doncis · 2019-09-09T17:20:58.000Z

Insane flashlight, high output super thrower… For now my x65, tn42 just collecting dust. Disadvantage - x65 battery pack won’t fit properly. Battery pack would be great.

richbuff · 2019-09-09T23:57:43.000Z

Doncis:

Insane flashlight, high output super thrower. For now my x65, tn42 just collecting dust. Disadvantage - x65 battery pack won’t fit properly. Battery pack would be great.

Welcome! Your first post on BLF, but five years reading!

My TN 42 collecting dust, but X65 still has more beam width than K75, even though K75 has more distant narrow target definition than K75.

My X65 battery pack appears to fit properly and fit electrically in the K75.

Doncis · 2019-09-10T14:54:20.000Z

Electrically it works. But you can damage K75 head sealing surface, so be careful. Overlap is only 0,3mm , small enough to damage aluminium parts.

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ChibiM · 2019-09-10T15:26:22.000Z

Thanks for the review!

great photography!

MascaratumB · 2019-09-10T17:27:36.000Z

This photo :o

roma58 · 2019-09-16T16:53:04.000Z

ChibiM:

Thanks for the review!

great photography!

Thank you for reading it.

SKV89 · 2019-09-16T18:36:26.000Z

richbuff:

My X65 battery pack appears to fit properly and fit electrically in the K75.

I also use the X65 battery pack in the K75. You can buy the X65 battery pack on Ebay or BHPhotovideo. The charger is an ASUS 19V 3.42A 5.5mm plug that you can buy from Ebay.

Doncis · 2019-10-13T20:33:28.000Z

Runtime

Yokiamy · 2019-10-13T20:38:09.000Z

I suspect that % must be Lm in that chart.

Brave to submerge the light!

Theodore41 · 2019-11-30T08:30:24.000Z

richbuff:

As I have a lot of 30Q batteries,flat and button top,I decided to buy one without the dedicated Acebeam ones because I saved about €40.00 .Will the K75 work properly with them?

richbuff · 2019-12-20T22:04:22.000Z

Sorry for late reply, I missed your post.I saw your vote for R90TS in the best of 2019 topic, so I decided to search your posts to see what else we agree on, and there was you question for me. < embarrassed>

Your cells should work ok/fine.

Theodore41 · 2019-12-21T03:02:20.000Z

richbuff:

Sorry for late reply, I missed your post.I saw your vote for R90TS in the best of 2019 topic, so I decided to search your posts to see what else we agree on, and there was you question for me. < embarrassed>

Your cells should work ok/fine.

Thank you for your response richbuff.

Theodore41 · 2019-12-30T05:17:03.000Z

What about the switch of the K75?I see that it is spongy and way below the big Imalents’ switch.No clicks.I don’t like it.

Giancarlo · 2020-01-15T01:59:24.000Z

It is strange that no one complained about the very short turbo run time in Power mode. After a few seconds, the lumens are reduced to less than half and certainly also the throw. The two Power and Eco modes are misleading. Practically the behavior of their turbo levels is the same! Just look at the reviewer's chart.
Much better is the behavior of the most recent BLF GT-90, with the same LED, whose turbo lasts at least 15 mins. and the performances are even higher than the K75. Look at the video review: https://www.youtube.com/watch?v=xQBDrNKyWKY

Theodore41 · 2020-01-17T08:58:07.000Z

Today,I put a new set of Sony high drain batteries,putting the 30Qs already used,in a Astrolux MF04.After that,I checked the beams of the two lights,and I saw that in strobe mode,the MF04 is way better than the K75.For defence I mean.

Doncis · 2020-01-19T20:33:11.000Z

! !

WV_Flashlight_Fan · 2020-02-27T18:48:22.000Z

So Samsung 30Q button tops work good? Or what’s the best alternative to the Acebeam batteries?

sp5it · 2020-06-20T20:49:04.000Z

Bump.
Which button top cells would be the best?
Mike