Review: Acebeam X45: 4 x XHP70.2 P2, 18000 lumens, impressions, beamshots, comparison


Sep 10, 2012
The Netherlands
Acebeam is a leading manufacturer in the "lumens-race" and launches always innovative products. So, I was happy when I had a mailcall (the light was sent out by that the X45 arrived. I know that there are several brighter lights already, also made by Acebeam, but for me this is the brightest flashlight ever that I'm gonna try out. Different to most powerhouses is that the X45 not only puts out a lot of light; it has an impressive beam distance too. So, again a nice Acebeam-toy to play with. In this review I will share my opinions about this torch, show you the light and a lot of details by a couple of pictures, and describe the interface and the options. Also included: A comparison with some other big lights and indoor and outdoor beamshots. Enjoy reading my story and watching the photo's!

the most powerful flashlight I tried out ever

the compact Acebeam X45

this is the second version, powered by four XHP70.2 P2 leds

blinding lumens and decent throw make this light very interesting

As, I'm used of, I give you the specifications first (by manufacturer):

· 4 Cree XHP70.2 P2 LED with a lifespan of 50,000hours
· Max Output 18000 lumens
· Approximate runtimes in each mode:
Firefly : 10 lumens 310 hours;
Low : 800 lumens 10 hours;
Mid : 2000 lumens 3.5hours;
High: 5000 lumens 1.4hours;
Turbo:9000 lumens-5000 lumens, 10 minutes + 72 minutes
Turbo Max:18000 lumens-4000 lumens, 3 minutes + 66 minutes
Strobe 5000 lumens, 3 hours
· Working Voltage:12V-16.8V light on switch indicates low reserve
· Max Runtime 310 hours
· Max beam 622 meters:
· Peak beam intensity 96569 cd
· Impact resistant 1.2meters
· Waterproofing: IPX8 standard to 2m
· Size: 156.7mm length, 88mm head diameter, 50.5mm tube diameter
· Weight 535g (18.9oz)
· Smooth reflector for max light output
· Digitally regulated output- maintains constant brightness
· Side switch on the body
· Mode steps down from Turbo-Max to Turbo if internal temperature exceeds 65
· Made of durable aircraft grade aluminum
· Premium Type III hard-anodized anti-abrasive finish
· ultra-clear tempered glass with AR coating, 98.3% transmittance, protected by a stainless steel crenelated bezel

And the output and runtimes specs in a graph:


The X45 is packed in a carton with plastic handle which makes it more easy to carry. Same package like the K65-brother that I tried out in the past year. On the box we see some "highlights" of the torch and the specifications and runtimes. No unexpected things here. On the left side of the box we can see that Acebeam brings the X45 in two versions: Cool white (6500K) and neutral white (5000K). I got the most powerful one, the 6500K-version. Remarkable is that both versions get the same package, although a 5000K-version will put out less lumens, estimated minus 1500 lumens on highest level. After removing the flap, we find back the X45 protected by the holster; this may be also the best way to restore the light. The lens of the X45 is protected by plastic film, that you need to remove before use. A big plus in my eyes is that Acebeam again delivers a complete set: Aside from the parts and manual the X45 comes with the most important, four pieces of quality high-drain cells. At this way, you don't need to worry about which batteries will fit; the only accessory you need is a dedicated charger.. I like the way that Acebeam pack their products! See some photos that show more!

same package that we saw earlier by the K65-brother

specifications and runtimes on the back

the X45 is protected by the holster

dustproof film on the lens; the X45 comes in a 5000K or 6500K-version

and the rest that is in, including a set of dedicated batteries


First impression: More compact than I expected! Most most big lights powered by four batteries are obviously larger than the X45. I'm still fan a big of "kings-torches" like this one is: Because of the powerful appearance, main to the impressive head with four big leds. What we see back again on this product is the excellent overall quality, like we saw at earlier tested Acebeam-lights. The X45 comes in matte black like almost all flashlights, so that may not be a big surprise. Anodizing job and finishing is well done, I couldn't detect any shortcoming on the light here. Same for the engraving. Striking details of the lights are the silver power button (made of metal, good point) with an indicator above it. Another eye-catching detail is the big head with deep cooling fins. This is absolutely needed, because the light will get hot in short time due to the four "quad-leds" that put of a lot of lumens. A solution that I didn't meet before is the ring for the carrying strap: If you push and turn it will "disappear" in the body. Nice find of Acebeam, I'll show you how it works by some pictures too. Of course the light stands very stable both on head and tail. The tail has got also a nice styling and has the looks of a star. The serial number and the URL of Acebeam is also engraved in the tail on a special way. The edge of the head is grey, nice accent, but very sensitive for scratches. The light has several notches in the head, which prevents the torch against accidental rolling away. Works well; I'm always happy with that; I don't like it if lights roll of the table and get damaged.. Looking into the massive head, we see four well-positioned XHP70.2 P2 bulbs in middle-deep reflectors. The reflector is different to the previous version, no orange-peel structure anymore, but a smooth one. Pay attention on this if you are intend to purchase an Acebeam! The manufacturer regularly comes with an update on a model. The restyled reflector results in more concentrated spot that throws further. When we open the light we can have a look at the well-lubed threads and the inside of the head with strong spring that will protect against shocks. In the tube we find back the battery carrier, with gold-plated contacts. In contrast to what I saw at other brands, this carrier stable and durable, and with this one I wasn't afraid that I would destroy it during inserting the batteries. It doesn't make sense how you put it in, because of the position of the batteries. All contacts are gold-plated in the carrier, there's a sticker fixed on the carrier that warns you to use the right batteries. A big plus is that the right cells are standard in the box, so this shouldn't go wrong. Also after opening the light, we see it's all ok here: Well-lubed and smooth running threads, well finished parts. All-in-all, I can say that Acebeam has launched again an excellent manufactured and finished product; the X45 is a high-quality flashlight. I'll show you more details by a couple of pictures, please scroll down to watch!

a big torch, but more compact than expected

main colors matte black and silver

looking into the head we see four XHP70.2 P2 emitters

big fins in the head to dissipate the heat

stable standing, no surprise

look at the special design of the tail

the X45 in a hands' palm


anodizing is done well, no flaws anywhere

this latest version has smooth reflectors

a strong springs keeps the battery carrier in place

gold plated contacts

a warning to use the right cells fixed on the carrier

a stylish indicator above the switch

the battery carrier is made of good quality


the quad-leds are well-centered

a close-up to the threads

the lights is built and finished very well

special detail: the ring for the lanyard

it "pops up" when you turn it

good strap, not to big

this is the tube from inside

rather deep reflectors, so this light will have good throw

nice design, good anti-rolling prevention

the grey ring on the head is sensitive for scratches

this is a high-quality product

the X45 has a good lowest level for a big light like this

User interface:

As I said you earlier, this light is more compact than most of its competitors, but still a big one. It feels heavy but well balanced. The grip is good, although the knurling isn't that aggressive on the body. But thanks to the big tube and the large head that has several cut-outs and deep fins this light won't slip out of your hand easily. The good adjustable strap is recommended during a longer trip.

The Acebeam X45 needs dedicated batteries; a big plus is that Acebeam delivers most of their products including cells. This helps to avoid problems with users. High-drain batteries are a must because the light can put out a crazy 18000 lumens for longer time. The only thing you have to mind is that you use a good charger to refill these special 18650's. I tried out the light with High-Drain-batteries from other brands; they all fit in the carrier and the light worked well. The carrier can be inserted at two ways because of the circuit. It's good to have an indicator that will informs you continuously about the voltage, it will not go off during use and lights up as long as you use the light. If the voltage drops below 13 volts, it will turn into red. The silver switch isn't that large, but is rather easy to locate in most circumstances. Just keep in mind that it is in the opposite of the ring that you can add the lanyard to, this will help you to find it back in the dark. I would like to see a larger switch on a big light like this is. The button has a clear pressure point and will not accidentally turn on in most ways, I never had it issue until now.

The X45 has the same interface like earlier lights of this brand that I tested before, and I would have to say: Don't change an interface like this, because it works well. It has three main modes and three "hidden" ones. Normally if you turn on the X45 by a single click, it will start in last memorized mode e.g. Low, Mid or High. In most cases, these modes will suffice. The firefly (that has 10 lumens so not a real firefly) can be reached by pressing and holding the button from off. The turbo modes (the X45 has two) can be turned on by a double click (works both from off or on). If you're in "normal" turbo next double click will bring you in turbo max. So you need some steps to go before you're in maximum output; but the maximum mode will be used in practice for short times and not as much as the other levels. You can switch between the turbo modes by double clicks as much as you want. If you press and hold the button the X45 goes back to the normal cycle of Low-Mid-High. These turbo-modes (and firefly) will not be memorized. My experience with the turbo max is that I missed it regularly because I "double-clicked" to fast, so I switched off the light after the first click. It needs some exercise but goes better now. By the way, the output that this light shows is really stunning! The light is temperature controlled, and in both turbo's levels it will step down when the temperature comes above 65 degrees Celsius. In practice. with full batteries, the X45 stays in turbo max for several minutes without problems; but I would recommend not to use this maximum levels too long (it's limited to about 3 minutes if the light doesn't reach 65 degrees) because the light will get very hot in short time, the heat is "starting" around the "neck" of the torch. The normal turbo is limited to about 10 minutes and this will make the X45 a very good searchlight, also because of the good throw. See my beamshots later in this review that will show the enormous wall of bright light. The blinding strobe-function must be activated by a triple click, this works both from off and on. This brightness of strobe is limited at 9000 lumens, but this may be more than enough to blind someone. To avoid accidentally turning on, the X45 has an electronic and physical lock-out. Hold the side-switch more than 2 seconds (the light will turn into firefly first) to (de)activate the prevention. The light will flash two times if you're in of out of lock-out mode. If the X45 is locked and you press the button for shorter than 3 seconds, the green indicator will light up to tell you that the light is locked. Second way to lock the light is by turning the battery tube about 45 degrees. Mostly I use the second option during transport to be safe that nothing can go wrong.

I don't have that many remarks or minors on the X45's interface. It works fine and doesn't need practice. Activating the Turbo Max takes some effort. I'd recommend one extra mode, which is a favorite of mine: I would like to see a momentary option on the lumens-monster.


The X45 has in total six levels, which seems quite a lot. But I'm happy with this because this makes it easier to adjust the light to your needs. The levels are in order of: FIREFLY > LOW > MID > HIGH > TURBO > TURBO MAX. I really appreciate the FIREFLY, that give very good runtime, but the jump between FIREFLY and LOW is too big in my eyes. For the rest the spacing is good and better balanced. No direct modes here, although FIREFLY and TURBO / TURBO MAX are only available by a long or a double press. The special mode is STROBE. This option can be activated both from off and on. The X45 has LOW-VOLTAGE-warning: If the current voltage is below 13 volts, the indicator turns red. So, no accurate voltage (which I really would like to see), but the only thing you can check is if you are below 13V. Two ways to LOCK-OUT the light. Nothing to complain about here, the modes that are needed are on board.

Size comparison:

I have not that many options in this class, but for reference I'll show you another compact lumens-king, the Olight X7R Marauder and a big-lumens-light that should reach about the same distance, the Fenix RC40-2016. Later in this review, we'll meet this lights again: In the beamshots-chapter.

18650-battery, Olight X7R Marauder, Acebeam X45 and Fenix RC40-2016

Olight X7R Marauder, Acebeam X45 and Fenix RC40-2016

Olight X7R Marauder, Acebeam X45 and Fenix RC40-2016

the heads: 3 x XHP70, 4 x XHP70.2 P2 and 6 x XM-L2 (U2)

the backs: Olight X7R Marauder, Acebeam X45 and Fenix RC40-2016


Looking at the tints of the three lights, we see that no one has the perfect tint, but the X45 has a good tint to me, that I can live with. The spot is cool white to neutral white, but we see some yellow back at the edge. Same to the other lights: The Fenix has more blue, the Olight looks slightly greenish.



Time to have a look at the beamshots. As usual, first job is indoors: The light projected on a white wall at about a meter away from the target. I'll show you the six levels and after that a GIF. Note: I had to adjust my settings (shutter time) to avoid that some pictures would be overexposed.

Camera settings: ISO100, WB daylight, F/2.7, 1/200 sec, 35mm







Going outdoors now! First location is a lawn near to a river with some big trees at about 75 meters away. The X45 mounted on a tripod; I'll show you the six levels and after that a GIF. Sorry for the overexposure at the Turbo-levels, but I want to use always the same settings in my reviews.

Camera settings: ISO100, WB daylight, F/2.7, 4 sec, 35mm







Let's compare the X45 now with the other big lights! Starting with the Fenix RC40-2016. This light has clearly less lumens, but has better throw, also thanks to the narrow beam.

the Acebeam X45 against the Fenix RC40-2016, both on highest level

And now the lumens-king made by Olight, the X7R Marauder in a shoot-out against the X45. The X7R has a larger hotspot, but less intense than the X45. Also nearby the X45 puts out much more.

the Acebeam X45 against the Olight X7R Marauder, both on highest level

Next location: The top of a windmill; distance to the top about 200 meters. This shows again that the RC40-2016 has a very narrow beam in contracts to the X45 that lights up a big area at shorter distance too.

the Acebeam X45 against the Fenix RC40-2016, both on highest level

The Olight X7R can light up the mill, but the X45 has clearly more throw and overall output.

the Acebeam X45 against the Olight X7R Marauder, both on highest levelafbeelding uploaden

After these comparison, I'll show you some pictures with the X45 in the hand on different locations. This shows again the crazy throw and output that this light has!

the Acebeam X45 at Turbo Max

the Acebeam X45 at Turbo Max

the Acebeam X45 at Turbo Max


With the X45 Acebeam has proved again that this manufacturer can make high-quality products in combination with some interesting features. If I put it to turbo max, this light still gives a wow-effect on me: The combination of a broad and far reaching beam is so nice! Like I said, the overall quality is very good, you don't have to worry about the cells because they are inclusive. The interface works well but choosing turbo max needs some exercise. The 18000-lumens turbo max is a nice level to impress or for short sessions; the high and turbo level will fit better in most cases, because they will last much longer. I would like to see a level between 10 and 800 lumens on this light and the option for instant (momentary) turbo max.

In short: A good product, easy to handle with, that has amazing brightness and impressive throw.

Special thanks to for the opportunity to test this flashlight!
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Flashlight Enthusiast
Jul 23, 2007
Bozeman, Montana
Great review! This is exactly what I was looking for before I purchased my neutral tint version. I'm late to the game on this one, but am glad I made the purchase. I have a Vinh Olight X7 light rated at 16500 lumens I believe, but the X45 definitely has more flood and throw. I love the size of the Ace as well. Others have complained about the tint shift, yellow tint of the neutral, and yes, I'd likely choose the 6500k if doing it again. Overall I love the X45 though and it'll definitely be using it for the nightly glow in the dark frisbee sessions. 😁


Flashlight Enthusiast
Jan 5, 2008
Boden, Sweden
Thanks for a valuable review!
While I am not a fan of super high modes with stepdown I find this light interesting. Good that the two turbomodes are not included in the memory. If X45 can sustain 5000lm (or close to) continiously for 1+ hour I will consider to get one!


Flashlight Enthusiast
Oct 31, 2002
Fantastic beam shot comparison! Thanks for doing such a great review.


Flashlight Enthusiast
Jan 5, 2008
Boden, Sweden
A bit late to comment, but thanks for the review and beamshots!
While I am usually critical to the "lumen monsters" who are over powered, I actually find this light interesting and consider to get it. My arguments for my own justification to get it are:

*The head is much more massive than of soda can monsters, which makes a better heat dissipation.

*Only turbomax has a very short time to stepdown. Turbo has 10min and according to a review it held 30min! with cooling. Really impressive.

*The excellent UI: 3 regular modes who are memorised and firefly and turbo with direct access INSTEAD of being memorised(some brands and models have direct access to firefly and turbo and these ARE STILL memorised. :sick2: ).

But the true advantage with such a light is the impressive and very useful runtimes at the regular modes. And you cannot accidently put on turbo mode, which I find important.
Finally I want to say that X45 is a very good looking light!

By the way: earlier this year I got an Acebeam K30 at a sale shortly before it was replaced with the GT version.
And this has a slight deviation in the UI which is otherwise the very same as X45. Turbo is included in the regular cycle and is memorised and turbomax is achieved with one double-click, not two. I then got information that Acebeam changed the UI with the later batches of K30.
Anyone that knows if this is the only case when Acebeam did so? This is maybe not a dealbeaker but I prefer the UI with turbo achieved with a double click and not included in the memory.
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Flashlight Enthusiast
Nov 21, 2014
Prescott Az
I hope that you buy and love the classic X45.
I waited a while, and then I finally got my Acebeam X45vn XHP70.2 on June 19, 2017, boosted to 25,000 lumens, with the Vn UI that I love. I purchased it slight used from my favorite modder; the light was returned to him by someone who did not like the tint. It replaced the Fenix TK75vnQ70 as my main outdoor area work light on the meeting hall property. Three years later, no other light has replaced it in its size/power classification in my collection. I have lights that are smaller, and lights that are bigger, but this item is still king of the 4 x 18650 flooders, in my opinion. Before I purchased the X45, I purchased five other classic pop can flooders. (MM15, MM15MB, M43, TN36UT, TK75). When I got the X45, my continuing active search for newer pop can flooders abruptly ended. I have thought about buying a second X45, to have a spare, in case there is an issue with the one that I have heavily daily used for three years. There has been no need to, but I should, while this classic item is still available.


Flashlight Enthusiast
Jan 5, 2008
Boden, Sweden

I ordered a X45 in neutral white(together with an E10 white) and they received yesterday. Wow, this lights rocks! Very good finish and machining really gives the feeling of quality. The UI is like the stated and not as my K30.:thumbsup:
Turbo and turbomax are just insanely bright. When shining the light to the ceiling it feels like I am in a light therapy room. But I did not buy it for the turbo max mode. It fast drains the batteries and the light becomes burning hot after a very short while. The real advantage and use with this light is the runtime at mid and high mode. Around 1,5 hours constant output at high mode and ~ 3,5 hours at mid mode is very respectable. And if you intend to avoid the turbos and use it at high mode you don't need the high drain batteries of 3100mAh but can use ordinary 3500mAh batteries for longer runtime.

I did a lux meter ceiling bounce test and it confirmed what I soon thought about low mode: it's far less than stated of 800lm(or ~730 of what could be expected for neutral version). It shows somewhere slightly above 400lm. It's just a bit more than 1/4 of mid mode. And I like it, because I find 800lm too much for low mode(just think about that 800lm was TURBO mode for a light of this size ~10 years ago!..).

I placed the light tailstanding on the table at high mode(~4200lm) and it's obvious that the massive head and the cooling fins makes this light possible to run continiously at high mode without cooling(yes, the power distributed on 4 emitters helps even more). It became pretty warm after a while but not really burning hot. And the batteries were only comfortably warm.
Here I see the real value of this light: because it's made for withstand extreme output(even for a very short while) it performs very well continiously at a still very respectable output of more than 4000lm.
And: did I say it's a very good looking light?
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