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Thread: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

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    Flashaholic* maukka's Avatar
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    Default Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    edit 2018-06-15: added data for turbo output with back to back activations

    Disclaimer: The Acebeam EC65 was provided for testing by manufacturer free of charge



    The Acebeam EC65 is an EDC sized 60 watt hotrod quad with an advertised maximum output of 4000 lumens and fast USB-C charging for the included 21700 5100mAh battery. It's available in two versions. One uses four cool white Cree XHP35 HI emitters and the other a high CRI Nichia 219Cs (no CCT specified). The XHP35 HI version was out first and is also the one tested here.

    TL;DR
    The Acebeam EC65 is a well built bright hotrod with a pretty beam. Excellent choice for the cool white lovers. Don't bother with 18650s if you want maximum output for longer than a couple of seconds. The actual turbo output is 3000 lumens after the first burst with a fully charged battery.

    If you're here only for the numbers, here they are:


    Manufacturer's specifications
    Battery: 21700 or 18650 with the included adapter (accepts button and flat tops, protected and unprotected, Acebeam 21700 5100mAh battery included)
    LED: 4x XHP35 HI in CW (tested) or 4x Nichia 219C in high CRI (no CCT specified)
    Waterproof: 5 meters
    Impact resistance: 1.2 meters
    Mode memory: yes (except moon, turbo and strobe)
    Low voltage protection: yes
    Thermal regulation: yes
    Lockout: electronic and physical
    Tripod socket: yes

    Manufacturer's output specs
    Maximum output: 4000 lumens (stepdown to 900 lumens after 1 minute)
    Other output levels: 2000/650/300/20 lumens
    Light intensity: 16600 candela
    Beam distance: 258 meters
    Special modes: strobe

    Measured dimensions and weight
    Length: 114.6 mm
    Head width: 31 mm
    Handle width: 26.1 mm
    Weight: 89 g plus 71 g for the 21700 battery or 66 g for an 18650 + the adapter

    Box and contents
    Acebeam's new line of retail boxes are attractive with a magnetically closed lid.













    Bundled in the box with the light:
    21700 5100mAh battery (Acebeam IMR21700NP-510A)
    18650-21700 battery adapter
    Holster
    USB-A to USB-C charging cable
    Two spare o-rings
    User manual
    Warranty card and a lithium ion battery warning

    Here's the user manual





    Physical appearance

    The four XHP35 HI emitters are behind a clear Carclo 10622 optic. It's the throwiest option in the quad optic lineup, which sometimes manifests as a beam with tint inconsistency problems. Not so with the domeless HI emitters though.



    The side switch is recessed and not easily accidentally acitavated. There's an electronic lockout, but as it's activated and deactivated with 3 second long press, I prefer the physical option of opening the tailcap just a bit.



    USB-C charging port is behind a rubber cover. On high and turbo, hot air build up inside the light and at some point escapes through the cover making a farty sound.



    Green light indicates full battery. Red means charging. That's the only job for the indicator LED.





    The tailcap spring has a tendency to rattle a bit when there's no battery inside.


    The backside of the 22.4 mm driver. It's held in place with two small screws. The body is glued to the head, but can be removed with some force.


    Acebeam bundles a protected 21700 battery with the light. Model number IMR21700NP-510A.




    Side by side with an 18650.




    The included adapter makes it possible to use 18650s in the 21700 sized battery tube.


    The bezel comes off easily and reveals the AR coated 26.8 mm lens, o-ring and a ring that holds the optics in place.


    23.5 mm MCPCB is screwed on the shelf. A 24.7 mm MCPCB can be fitted. The emitters are rotated so that the beam doesn't appear square.


    Size comparison to some 18650 triples/quads. The EC65 isn't that much bigger than most of them but does feel more substantial due to the larger body and added weight.

    Acebeam EC65, Wuben TO46R, Astrolux S41, YLP T95 CRI, Emisar D4.



    User interface

    The light is operated via an electronic side switch. There's a USB charging indicator LED next to it. Low battery or lockout mode is not indicated on the LED.



    From off:
    Click side switch to turn on the light on the last mode used (low, mid, high only)
    Double click for turbo, long press to go back to low
    Triple click for strobe, long press to go back to low
    1 second long press for lowest output (firefly)
    3 second long press for electronic lockout, 3 second long press to unlock

    From on:
    Click to turn off
    Hold switch to advance to the next mode (low-mid-high-low...)
    Double click for turbo, long press to go back to low
    Triple click for strobe, long press to go back to low

    The UI is simple and intuitive. There's shortcuts to the lowest and highest modes and memory. Perfect in my opinion. Only thing I would probably change is the always return to low from turbo and strobe with long press. Returning to the previously used mode would fit the memory theme.

    I would also like to have the charging indicator or the main led flash if you're trying to turn the light on when it has been locked out electronically. It may be confusing as to why the light doesn't work if someone has locked it out.

    Integrated charging

    The integrated charging uses USB-C connector. It draws about 2.2 amps from the USB power supply and fills the included battery in about three hours. The indicator LED on the light is red until the battery is full after which it turns green.





    IMR21700NP-510A battery measurements

    The included 5000 mAh 21700 battery has a protection circuit. The protection circuit is on the positive end. There's no original wrapper under the Acebeam wrapper and I don't know its origin. It reads C4 B1 #1-3 C2 on the can.


    Length: 74.4mm
    Width: 21.45mm
    Capacity: 4921 mAh @ 2 A
    Energy: 17.60 Wh @ 2 A
    Maximum current (OCP): trips at 20 A after 26 seconds
    Minimum voltage (LVP): 2.48 V
    Internal resistance (Ri): 38 mOhm (measured at 15A DC)

    Discharge curve at 2 amps.


    Discharge curve at 20 amps. Sony VTC5A 18650 for comparison. The Acebeam battery is rated for 20A continuous but can't do it.


    Beam and tint

    The cool white beam produced by the four XHP35 HIs and the clear Carclo 10622 optic is smooth and floody with a bit of a hotspot. There's no ringy artifacts and very little shift in color temperature or tint within the beam. There's only a sligh greenish and warmish tint in the center of the hotspot, which isn't at all visible on surfaces other than white. Overall I rate the beam quality good.



    Tint in the hotspot in different modes:


    Tint within the beam (on medium):












    Spectral data and color rendering

    For spectral information and CRI calculations I use an X-rite i1Pro spectrophotometer with HCFR, Babelcolor CT&A and ArgyllCMS spotread for the graphs and data. For runtime tests I use spotread with a custom script and an i1Display Pro because it doesnt require calibration every 30 minutes like the i1Pro.

    Explanation of abbreviations (click link to read more)

    CCT = correlated color temperature, higher temperature means cooler (bluish)
    CRI (Ra) = color rendering index consisting of 8 different colors (R1-R8), max value 100
    CRI (R9) = color rendering index with deep red, usually difficult for led based light sources, max value 100
    TLCI = television lighting consistency index, max value 100
    CQS (Qa) = Proposed replacement for CRI, RMS average of 15 color samples
    CRI2012 (Ra,2012) = Another proposed replacement for CRI, consists of 17 color samples
    MCRI = Color rendering index based on the memory of colors or 9 familiar objects
    NEW Read more about the IES TM-30-15 method here (link is external)
    TM-30 = The newest color rendering method using 99 samples. Preferred for comparing LEDs.
    TM-30 (Rf) = Accuracy of colors, fidelity index. Replaces CRI(Ra).
    TM-30 (Rg) = Gamut of colors, saturation index. Higher number means more saturated colors.
    Tint dev. (Duv in the CTA screenshots) is the tints distance to the black body radiator line in the CIE graphs. The higher the number, the greener the tint. 0,0000 means absolutely neutral white and negative numbers mean rosy/magenta tint. Anything over 0,0100 can be described as visibly green.

    If you have an hour to spare, I recommend watching this presentation on IES TM-30-15 which also shines light into color rendering in general.





    CRI data on turbo from the hotspot


    CRI data on medium from the hotspot


    Other modes
    Firefly https://i.imgur.com/MVT7f79.png
    Low https://i.imgur.com/9YdTb3b.png
    High https://i.imgur.com/FJozJHt.png

    Output and runtimes





    As can be expected for a small hotrod, the maximum output doesn't last very long. However, I couldn't achieve a full minute of turbo like Acebeam says. Also it is not a timed stepdown or the temperature regulation that causes the first drop in output but a low battery voltage. Fan cooling doesn't help with the stepdown.

    Using different batteries, you can see the difference in turbo behavior


    The two Acebeam 21700s behave differently from each other on turbo. The cause is simple, the first one I received bundled with the first EC65 sample has an internal resistance of 42 mOhm while the other clocks in at 38 mOhm. This doesn't sound like much, but it seems to be enough to make the EC65 step down at only 12 seconds on the first and at 32 seconds on the better sample.

    The worse one has only barely low enough internal resistance to allow for turbo to work. It seems that the stepdown from turbo happens when the battery voltage drops below about 3.5V.

    added 2018-06-15: All this also means, that you can only get the full output of 3750-3500 lumens once with a full battery. Here I did a test where I activated turbo and turned the light off when the output had stabilized after the stepdown. Then I let it cool down for five minutes with the help of a fan.



    After the first activation the turbo is down to 3100 lumens. Now the Acebeam specification of 1 minute of turbo before stepdown also matches. It does produce the 3100 lumens at 0 sec and 3000 lumens at 30 sec consistently for several cycles so Id rate this a 3000 lumen light, not 4000 and I feel Acebeam cheated a bit on this.

    The included 21700-18650 adapter is pretty bad in terms of resistance. At 23 mOhm it doubles the internal resistance of a Sony VTC5A and makes the otherwise superior battery perform worse than the protected Acebeam 21700 battery in the EC65. This is apparent from the faster stepdown on turbo. This means turbo will not be available with most 18650s.

    Here's the same batteries when discharged at 15 amps (the current draw on turbo) with an electronic load. The VTC5A is clearly the best with regard to voltage drop, while the 21700 adapter makes it much worse.


    More tests coming when I get more 21700s to test with.

    On high, fan cooling helps the output to stay higher in the beginning.


    On the lower modes the output is perfectly constant, but even on mid the light still gets too hot to hold after 15 minutes.




    Current draw

    The boost driver draws a lot of current from the battery on turbo. I measured 15 A with a clamp meter at turn on. There are not a lot of protected batteries with an over current protection above 15 amps.



    Also, when the battery is connected as the tailcap is tightened, there's a 15-20A inrush current. This is very short though (50s) so it's not likely to trip any protection circuits. I did notice sparks while measuring it with a short thick cable.




    Standby drain

    There's some parasitic drain on the batteries when the light is switched off. I recommend opening the tailcap a quarter turn to break the circuit when the light is not in use.

    Standby current: 190-220A depending on battery voltage

    It would take about three years to drain a 5100mAh battery.

    Low voltage protection

    Main LEDs blink below 2.78V
    Low voltage protection at 2.56V

    When the battery voltage drops below a certain threshold the light starts to blink and finally shuts off completely. The side LED is only for charging progress, not battery voltage warning like in some other Acebeam lights. This means the light won't damage the battery even if it's not protected. However, since there's some standby drain which doesn't end at low voltages, you shouldn't leave the battery in for prolonged periods after it has been drained.

    Flicker

    I measure the flicker optically from the LED with a Thorlabs DET36A/M photodetector and an oscilloscope.

    There's some 4500 Hz ripple on firefly, but it's not visible to the naked eye (snob index 0.5%). Camera phone might pick it up, but who would use a low lumen mode for photography? On higher modes the flicker snob index is 0.0% which indicates that there's no fear of noticing it at all.



    Other modes:
    Low https://i.imgur.com/r0eQuMO.png
    Medium https://i.imgur.com/IwL8AJn.png
    High https://i.imgur.com/Wl2vsgr.png
    Turbo https://i.imgur.com/tFhutre.png

    Strobe
    Strobe is activated with a triple click from off or on and it operates at 9.3 hertz.


    The output is at about the same level as high. You can hear the driver making noise while the strobe is on.


    Temperature

    Like most Acebeams there's thermal regulation in the EC65 to protect the emitter and driver. It isn't very aggressive and allows the light reach skin burning 75C on turbo and high. It is up to the user to lower the level when they start feeling uncomfortable, but it keeps the electronics safe.

    On turbo the level steps down even before the temperature regulation has time to kick in.

    Maximum measured temperature on different modes in room temperature (24C) without additional cooling:
    Turbo: 75C, 58C at the end of the initial stepdown
    High: 75C
    Medium: 65C

    Verdict

    The Acebeam EC65 is a very well finished light and one of the brightest compact quads. The small size also limits its continuous output as there's not much mass to sink the heat. Expect 30 seconds of maximum output at most. The output is close to the advertised 4000 lumens at 3500, but the measured throw of 11100 candela is far from the specified 16600 cd. On the other hand, I would have liked a real moonlight mode.

    The maximum turbo output of 3750-3500 lumens is available only once with a fully charged Acebeam battery. After that the voltage drop is too large for it to reach the 3750 lumens at startup. You can pretty much consider this a 3000 lumen light after the initial burst. I have to test with higher discharge batteries when I get them.

    It's no surprise that the temperature is an issue on higher modes, and Acebeam doesn't nanny you about it. The light gets burning hot on every mode on medium and upwards. So don't leave it unattended if a child could possibly reach it. The maximum continuous output of 789 lumens is not bad for a light this size though. The output is also fully regulated.

    For an XHP35 HI light the efficacy is good and at 90 lm/W on higher modes a bit better than the 219C (80CRI) Emisar D4 at <70 lm/W for example. The 21700 also gives the EC65 >50% extra runtime. Efficacy doesn't improve on the lower modes, you get pretty much equal amount of lumen hours on each mode.

    The cool white beam is very even and smooth, with a slight hotspot effect thanks to the clear Carclo 10507. For friends of floodier and more even beams, it's easy to swap the optics for a frosted one. The bezel is not glued on and comes off easily. While the measurements show that the tint is on the green side of neutral especially on the low modes, it doesn't really look very bad thanks to the tint consistency. Only the middle of the hotspot looks a bit warmer and greener. The overall tint can be of course corrected with a filter, which is easy to slip under the lens.

    + Very high burst output for an EDC sized light
    + Flat output on firefly/low/medium modes
    + Great electronic switch UI
    + Excellent finish and quality
    + No visible flicker
    + Fast USB-C charging (3 hours to charge the included battery)
    + Beam profile easily modifiable with standard swappable Carclo optics
    + Also available in high CRI version for the snobs
    - The lowest output level could be lower
    - Temperature regulation is a bit too relaxed, light gets very hot (75C)
    - Throw spec is overrated (16600 cd vs. 11100 cd)
    - Makes noise on firefly & strobe and also when battery is very low
    - 18650-21700 adapter has high resistance and makes the turbo accessible only with the highest drain 18650 batteries (VTC5A)
    - Included 21700 battery doesn't match its 20A rating (OCP activates after 26 seconds)
    - Included 21700 battery is only barely good enough to enable turbo
    Last edited by maukka; 06-15-2018 at 06:16 AM.

  2. #2

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Thank you for your very comprehensive review of this intriguing item. Very brief, but very high output for size is what I want my lights to be capable of, even if only used for a few seconds in that mode.

    This item is on my short list; next is to identify the best performing battery.
    Acebeam two X65Vn, X45vn70.2. Eagletac MX25L4CvnT XP-L. Fenix TK75vnQ70. Manker MK34Vn XPL.
    Nitecore TM06Svn 4 x XHP50.2. Noctigon Meteor M43vn XP-L dd. P60vn Quad XP-L HD 2 cell host Cryos Cu head. Thrunite TN36UTvn, TN42vn.

  3. #3

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Really in depth review.

    I actually own this light.. here's my review. Good pocket light. It won't burn you unless you have it in turbo mode and yes I mean burn you... It's a flooder. USB 3 charges pretty fast, I use it as my in house daily light so I use it every day. You do get 2 batteries which is nice. I charge mine via my computer.

  4. #4
    Flashaholic* maukka's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by hehaw77 View Post
    You do get 2 batteries which is nice. I charge mine via my computer.
    Both of mine only came with 1 battery. Maybe there's dealer specials?

  5. #5

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Interesting light.

    I like the Acebeam interface and having this one as a pocket rocket sounds great. I don't have one yet, but am strongly considering getting one.

    What I like

    * 21700 support. I don't have a 21700 light yet and the extra runtime sounds nice. Might be too heavy for pocket EDC though. With cell installed probably similar in weight to a Ti-Cu Emisar D4, which I find too heavy for pocket EDC.
    * beautiful styling
    * love that Acebeam UI
    * pocket rocket.
    * Easy emitter swap (for $32 more can buy neutral tint XHP35s from Mountain Electronics to replace the stock cool whites).
    * I only have one other Acebeam (UC15), and am very impressed with it.

    My biggest concerns about this light:

    * Pricey. Acebeams definitely aren't cheap.
    * 12-30 seconds on turbo sounds extremely low though. Reminds me of some of my older Zebralights that had a similar problem: They were supposed to last 1 minute on turbo but instead lasted as little as 1 second even on fresh cells. Probably due to a bad ground connection.
    * according to some of the early owners on BLF, some of the first-run samples of the EC65 have an issue where the light dies when run on turbo. One user reported this when using a low resistance high-drain cell of much higher quality than the one that came with the light. But another user reported that the light died after 30 seconds on turbo with the stock cell. And when these users' lights died, they reportedly ceased working permanently and had to be sent for warranty service/replacement. On the upside, it sounds like Acebeam has identified the problem and fixed it, and is providing good service to anyone affected.
    * 75C sounds a bit too hot. I'd probably rather the temp sensor turn down output before the light burns my hand or thigh. Perhaps have the temp sensor be user-programmable like in the D4.
    * 12 lumens isn't really a moonlight mode.

  6. #6

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by maukka View Post
    Both of mine only came with 1 battery. Maybe there's dealer specials?

    really? mine came with 2 the large one and a smaller one that goes into the tube

  7. #7

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by Fireclaw18 View Post
    Interesting light.

    I like the Acebeam interface and having this one as a pocket rocket sounds great. I don't have one yet, but am strongly considering getting one.

    What I like

    * 21700 support. I don't have a 21700 light yet and the extra runtime sounds nice. Might be too heavy for pocket EDC though. With cell installed probably similar in weight to a Ti-Cu Emisar D4, which I find too heavy for pocket EDC.
    * beautiful styling
    * love that Acebeam UI
    * pocket rocket.
    * Easy emitter swap (for $32 more can buy neutral tint XHP35s from Mountain Electronics to replace the stock cool whites).
    * I only have one other Acebeam (UC15), and am very impressed with it.

    My biggest concerns about this light:

    * Pricey. Acebeams definitely aren't cheap.
    * 12-30 seconds on turbo sounds extremely low though. Reminds me of some of my older Zebralights that had a similar problem: They were supposed to last 1 minute on turbo but instead lasted as little as 1 second even on fresh cells. Probably due to a bad ground connection.
    * according to some of the early owners on BLF, some of the first-run samples of the EC65 have an issue where the light dies when run on turbo. One user reported this when using a low resistance high-drain cell of much higher quality than the one that came with the light. But another user reported that the light died after 30 seconds on turbo with the stock cell. And when these users' lights died, they reportedly ceased working permanently and had to be sent for warranty service/replacement. On the upside, it sounds like Acebeam has identified the problem and fixed it, and is providing good service to anyone affected.
    * 75C sounds a bit too hot. I'd probably rather the temp sensor turn down output before the light burns my hand or thigh. Perhaps have the temp sensor be user-programmable like in the D4.
    * 12 lumens isn't really a moonlight mode.
    turbo lasts longer with the large battery... the only reason I don't use it for extended periods is not for longevity its @ 4K lumen this thing gets "oven" hot... so I usually cycle it down to one setting lower and that's just fine.... I guess I have a good one... I use turbo here and there even kept it on for a long time "longer than 30 secs" no issues... "stand alone" not holding it of course...

  8. #8

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Thanks for the review as always very detailed.

  9. #9
    Flashaholic* MAD777's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Yet again a fabulous review. I cannot imagine the effort you give to all your reviews, but the reviews are extremely helpful to the community!

  10. #10
    Flashaholic* maukka's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Here I did a test where I activated turbo and turned the light off when the output had stabilized after the stepdown. Then I let it cool down for five minutes with the help of a fan.



    After the first activation the turbo is down to 3100 lumens. Now the Acebeam specification of 1 minute of turbo before stepdown also matches. It does produce the 3100 lumens at 0 sec and 3000 lumens at 30 sec consistently for several cycles so *I'd rate this a 3000 lumen light, not 4000* and I feel Acebeam cheated a bit on this.

  11. #11
    Flashaholic* MAD777's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    The EC65 reminds me of Emisar D4 in that they turn on with a tremendous burst of power, only to fade quickly from voltage sag & heat. Never the less, fun little lights, useful on low settings and for flash photography LOL

  12. #12
    ven's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Thank you for the super detailed review

  13. #13
    Flashaholic* Keitho's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Nice job on the review, maukka. I didn't see it before I posted some quick impressions on my Nichia version: http://www.candlepowerforums.com/vb/...47#post5215847

    My conclusions were very similar--they are close to a good product for flashaholics (nice cell, USB-C charging, efficiency, multi-fuel options), but tint and the UI are holding them back a bit for a light this price.

  14. #14

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    This is more or less an emisar d4 with acebeams logo on it, nothing wrong with both lights but as said they get way too hot to really have much practical use for the highest output. Weird tho see lowest output be 20 lumens for this size..way too high.

  15. #15

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    what would be the effect if I took out the optic.. eg.. the piece right above the led's... any thoughts?

  16. #16
    Flashaholic* Keitho's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by hehaw77 View Post
    what would be the effect if I took out the optic.. eg.. the piece right above the led's... any thoughts?
    On my 219C version, the beam with the optics in is very floody--taking out the optics to make a mule barely had an effect.

  17. #17
    Flashaholic LessDark's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Great review!
    Will you take a look at the Nichia version as well?
    Warm white.

  18. #18

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by Keitho View Post
    On my 219C version, the beam with the optics in is very floody--taking out the optics to make a mule barely had an effect.


    hmm so kinda not worth it?

  19. #19
    Flashaholic* maukka's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by LessDark View Post
    Great review!
    Will you take a look at the Nichia version as well?
    Im probably not going to buy it but if Acebeam or the local dealer sends one in, of course.

  20. #20

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Very useful review as always! Is the PCB board swappable with a noctigon 4x board?

  21. #21
    Enlightened =the='s Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by maukka View Post
    The UI is simple and intuitive. There's shortcuts to the lowest and highest modes and memory. Perfect in my opinion. Only thing I would probably change is the always return to low from turbo and strobe with long press. Returning to the previously used mode would fit the memory theme.
    Thanks! Returning to low follows the logic that long press changes to the next mode.

    The original design had double click back to previously used mode, but that wasn't implemented to EC65 for some reason. Let's see if we can get this included to future versions..
    =the=

  22. #22
    Flashaholic* maukka's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    The double click from turbo was actually my first way of trying to get back to the previous mode and it should be implemented for sure.

  23. #23
    Flashaholic* SCEMan's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    I have the same issue with my Acebeam L16. My Olight R50 returns from Turbo to the previous mode with a long press and I much prefer that UI.
    Maybe nit-picking, but double clicking briefly turns the light off-then back on each time, and although effective seems awkward.

  24. #24

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by SCEMan View Post
    I have the same issue with my Acebeam L16. My Olight R50 returns from Turbo to the previous mode with a long press and I much prefer that UI.
    Maybe nit-picking, but double clicking briefly turns the light off-then back on each time, and although effective seems awkward.
    Yeah you are nit picking..... the L16 has a back button for turbo max so no issues there..... I own it like you do. Even did a comparison with the thrunite cat 6

  25. #25
    Flashaholic* SCEMan's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Quote Originally Posted by hehaw77 View Post
    Yeah you are nit picking..... the L16 has a back button for turbo max so no issues there..... I own it like you do. Even did a comparison with the thrunite cat 6
    Nit picking for sure, but isn't that a trait of flasholics?
    I only use the tailcap turbo mode for bump in the dark scenarios. When walking, I use the side switch to adjust output according to conditions, and the inability for a brief turbo blast and return to prior mode is annoying.

  26. #26

    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    send it to Sky Lumen he will mod it for you

  27. #27
    Flashaholic amaretto's Avatar
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Best of all reviews, maukka

    Comparison of the Nichia-version with clear and diffused optics


    Some more informations


  28. #28
    Unenlightened
    Join Date
    Aug 2018
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    Default Re: Acebeam EC65 review (21700, 4x XHP35 HI, cool white)

    Just received the EC65 in the mail today.

    Here's some size comparisons between the EC65, Nitecore EC21 and Olight S1A Baton.





    The EC65 will replace my EC21 as my EDC backpack flashlight and the S1A will remain my EDC pocket flashlight.

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