Acebeam X45 review with measurements (4x XHP70, 4x 18650)

Octavian

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For sure the graph 30sec/1m/2m/5m was made with fan cooled, also to Olight X7 has almost no step down after 5 min (not possible with no fan cooled ) .
 

Octavian

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Don't worry, Acebeam doesn't step down so easy, it just became HOT like crazy, and than maybe you will see a step down.
 

maukka

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After getting a fast photosensor with 14 ns rise time (Thorlabs DET36A/M), I measured some switching noise on low and mid in addition to firefly. The frequency is so high that there's no chance of ever seeing it, but maybe some serious slow motion cameras might be affected.

Low (109 kHz)
E5qmvXJ.png


Mid (430 kHz)
5vkOaxB.png


The sensor reveals some other interesting output anomalies from various lights...
 
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maukka

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I am either missing something or the info. provided is contradictory.

In the one graph for TURBO MAX you have it @ 14,890L, then 4310[3:30 step down]

For Turbo max on the 30sec/1m/2m/5m graph you have 14890-30s/14450-1m/13000-2m/8550[5m].

How could the output be almost double[8550] after 5 minutes than it is after 3:30[4310] in your First graph that I mentioned?

The 3:30 (4310) in the table means that the light will start stepping down at 3:30 and will (eventually) decline to 4310 lumens. At 3:30 it is still at 12800 lumens.
 

Capolini

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The 3:30 (4310) in the table means that the light will start stepping down at 3:30 and will (eventually) decline to 4310 lumens. At 3:30 it is still at 12800 lumens.


Ok,,,thanks,,,,,,,that is a confusing way to post it! Actually it is 12800 @ 3:30 NOT 4310......4310 is the end result of the step down.

So how long does it take before it is @ 4310?
 

Gigaslux

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It is inconsistent. The X65 that has "only" 12000 Lm is almost the double in size of the X45 that has 16500Lm! You cannot hold the X45 when in Turbo Max for more than 1 or 2 minutes. The torch becomes so burning that you cannot even press the metal button! This would be a good 4000Lm light. Turbo and turbo max are useless and are implemented just to make this simple torch more attractive. Other contradiction: The light needs high drain batteries for better result but wants protected battery - that have usually 10A - to be safer as the cells are in series. This torch would need an internal fan like the New Olight X9 or the Powertac 10500Lm.
 

richbuff

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It is inconsistent. The X65 that has "only" 12000 Lm is almost the double in size of the X45 that has 16500Lm! You cannot hold the X45 when in Turbo Max for more than 1 or 2 minutes. The torch becomes so burning that you cannot even press the metal button! This would be a good 4000Lm light. Turbo and turbo max are useless and are implemented just to make this simple torch more attractive. Other contradiction: The light needs high drain batteries for better result but wants protected battery - that have usually 10A - to be safer as the cells are in series. This torch would need an internal fan like the New Olight X9 or the Powertac 10500Lm.
Interesting observations.

The X45vn mod is 25,000 lumens. Twenty-five thousand L words. For how long, before depletion, melt down or uncontrolled fission? I will have to buy the Vinh mod version and find out for myself.

maukka: Thank you for your detailed and valuable review.
 

Hardusvd

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Really great review thanks. This flashlight is actually the 6500K version. This Flashlight using the Cree XHP70 P2 1C LED which gives you the greenish color in the hot spot and cool white color in the spill. The 5000K version does NOT show the greenish color in the hot spot and the spill is neutral white. I do have both of these torches.
 

maukka

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Really great review thanks. This flashlight is actually the 6500K version. This Flashlight using the Cree XHP70 P2 1C LED which gives you the greenish color in the hot spot and cool white color in the spill. The 5000K version does NOT show the greenish color in the hot spot and the spill is neutral white. I do have both of these torches.

Interesting and I think I have to agree that the light I tested was the cool white. It's just that the XHP70 has such a huge shift in color temperature that the hotspot measurement or 5190 K threw me off.

The color temperature of my X45 is very similar to the Olight X7 which was only available as cool white when I reviewed it. Also, the neutral white Acebeam EC50 II I reviewed earlier has a much warmer tint and less difference (it's still there) in tint between the hotspot and spill.
 
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seery

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Really great review thanks. This flashlight is actually the 6500K version. This Flashlight using the Cree XHP70 P2 1C LED which gives you the greenish color in the hot spot and cool white color in the spill. The 5000K version does NOT show the greenish color in the hot spot and the spill is neutral white. I do have both of these torches.
Great to know, thanks.

Any chance for a side by side pic showing the difference?
 

Fusion_m8

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Really great review thanks. This flashlight is actually the 6500K version. This Flashlight using the Cree XHP70 P2 1C LED which gives you the greenish color in the hot spot and cool white color in the spill. The 5000K version does NOT show the greenish color in the hot spot and the spill is neutral white. I do have both of these torches.

Would you say that the 5000K version would appear to have less output than the 6500K version?
 

Sen0rphil

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Just ordered the x45 in Neutral white. Will post back when it arrives.
 
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Sen0rphil

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I received the Acebeam x45 nw this morning and have compared it to the X7. Exact same tint as the nw x7 which is about 4800k. Perfect. It outperforms it by a large margin, especially in throw.
 

Artivideo

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Can you make some comparison beam shots ? How will the X7R be compared to the X45 ?


I received the Acebeam x45 nw this morning and have compared it to the X7. Exact same tint as the nw x7 which is about 4800k. Perfect. It outperforms it by a large margin, especially in throw.
 

Angeloflight

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I have a question. What if you run turbo for ten minutes and then turn the light off but then turn it back on again. Would that reactivate the turbo?
 

maukka

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I have a question. What if you run turbo for ten minutes and then turn the light off but then turn it back on again. Would that reactivate the turbo?

Yes.

On the other hand the turbo max mode works exceptionally well even when the cells are below 50 % charge. I measured only a slight difference in output compared fully charged cells at 50 % charge (14060 vs. 12950 lumens average during 3 minutes).
 
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