Review: BTU Shocker (3* XM-L U2 CW, 3* 18650) - comprehensive (picture heavy).

53 posts / 0 new
Last post

Pages

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne
Review: BTU Shocker (3* XM-L U2 CW, 3* 18650) - comprehensive (picture heavy).


20121210_154112

Manufacturer specifications from btulight.com

  • 3x Cree XM-L LED (U2) with a lifespan of 50,000 hours
  • Battery: 3 × 18650
  • 204 mm (length) x 52 mm(body width) x106 mm(head diameter)
  • 1200-gram weight (excluding batteries)
  • 4 levels of brightness: Turbo (3.8A*3)>High(2.2A*3)>Med(0.8A*3)>Lo(0.05A*3);with mode memory
  • Brightness:Turbo(3000lumens)>High(2000lumens)>Med(600lu mens)>Lo(80lumens)
  • Digital Current Regulation
  • Capable of standing up securely on a flat surface to serve as a candle
  • Tail cap click Switch
  • Made of durable aircraft-grade aluminum
  • Super deep Aluminum Alloy Reflector;Shotrange up to 800meters
  • Premium Type III hard-anodized anti-abrasive finish
  • Toughened ultra-clear glass lens with anti-reflective coating
  • With mode memory

Notice: Turbo mode will step down to High mode progressively after constant running for 180 seconds to avoid over-heat problem.

Also note: It does not seem to have an anti reflective coated glass.

This is the first light to come out of the BTU company. This is my 4th triple emitter light, and although you may skim over the specs what is interesting is that is has the same head as the TK70. The head is going to favor throw a lot more than spill. It uses 3* 18650 batteries, which in this case in turbo, they will need to be able to handle at least 3.8A. The choice of a tail-cap switch is questionable, given this light will not be easy to maneuver with it weighing in at 1.2kgs (2.6 lbs) without batteries and the thick bezel on the tailcap.

Many have searched for a powerful light which combines throw and flood – and usually the answer is a HID, but can this compare? Let’s find out…

20121210_145429

20121210_145450

20121210_145530

20121210_154137

20121210_153841

The light has options of CW, NW or WW tints. The model I reviewed was CW. As you can see, there is no purple tint which usually is indicative of an AR coating.

20121210_153101

Left to right: Crelant 7G5V2 with collimator head, 2 SkyRay Kings, BTU Shocker, SkyRay STL-V2, Jacob A60, Solarforce L2M, 2AA Maglite
Shocker: 204 mm (length) x 52 mm(body width) x106 mm(head diameter)

This is the kind of light which will pull your pants down if you try to put it in your pocket. The 1.2kg (2.6 lbs) body and the 3 18650s makes for a very heavy, short blunt weapon. The weight however, may have some merit with heat sinking – we’ll find out about that soon enough…

The finish of the light was flawless, had a clean reflector and a clean lens. No chips whatsoever in the anodizing and feels very solid in the hand. It feels very solid in the hand with no moving parts once everything is screwed in. The bezel adds a nice aesthetic touch.

The knurling provides excellent grip while not being so aggressive as to feel uncomfortable. It is also waterproof to IPX-8 standard with doubled thick o-rings.

20121210_154022

As you can see, the shocker has anodized, thick and very clean cut square threads.

20121210_153619

It has thick walls which feel good in the hand.

20121210_153604

It tailstands very well. It uses an reverse clicky switch to switch between modes. Lo 0.05A->Med 0.8A->High 2.2A->Turbo 3.8A (Note: these numbers are for amps per emitter, on turbo it pulls a whopping total of 11.4 amps – equivalent to a well driven SST-90, also note the Fenix TK70 pulls around 2.5A per emitter, or 7.5 amps total.)

20121210_154137

20121210_154112

All three wells overlap slightly unlike an Olight SR92, and are very deep which should attribute to its throwing capabilities – the integration allows each individual well to have a greater diameter, instead of having 3 separate wells which would significantly reduce the diameter.The design does not produce noticeable artifacts. The 90mm reflector looks absolutely beautiful with all emitters perfectly centered.

This is my first light to utilise an XML U2 beyond 3 amps, so I’m looking forward to testing what kind of outputs and throw we get! Smile

20121210_154433

Comparison photos: Shocker is always on the right

SkyRay King left, BTU Shocker right
kingshocker

Crelant 7G5V2 with collimator head left, BTU Shocker right
7g5v2shocker

85W “eBay HID” left, BTU Shocker right
hidshocker

Outdoor photos: Please note these are not indicative of what you see in real life, as my camera cannot capture such low light. Rather, use these to compare to each other.

Control:
STANDARD

BTU Shocker
Low:
SHOCKER LOW

Med:
SHOCKER MED

High:
SHOCKER HI

Turbo:
SHOCKER TURBO

Crelant 7G5V2 with collimator head
7G5V2COLLIMATORHEAD

85W “eBay HID
85W HID

SkyRay King
KING

User interface and temperatures

The switch is just a normal reverse clicky switch, Lo -> med -> high -> turbo. No strobes or SOS.

Temperatures: It was interesting to see how this would fare, given it had a hefty amount of mass, and although the surface area could have been increased, by looking at the graph we can see that it isn’t entirely necessary and it did do quite well.

Initially turned on to turbo, then it kicks down to high at 3 minutes, then it stays on high for another 7 minutes. Tail standing with an ambient air temperature of 20.8C (68.6F), no air movement.

TEMPC

TEMPF

All in all, you will be able to hold this light while running it on high quite comfortably.

Centre of balance

The centre is the last fin, giving it almost perfect balance when in the hand. The light has a great smooth feel and the knurling is grippy, but not aggressive.

Performance

Note: These figures aren’t meant to be dead accurate, but it will give you a good indication of the output and throw relative to other lights.

REVISED_LUMEN_LUX_TABLE

Lumens over time:

LUMENOTF

As you can see, the Shocker is very well regulated, and on high will keep it’s output indefinitely for 10 minutes.

Conclusion

The shocker is the first flashlight to come from the new BTU brand and it definitely doesn’t disappoint.

As evident from beamshots and relative output figures, the shocker is quite a bright light at close to 3000 lumens, while also being able to throw further than an aspheric. Although it still doesn’t quite reach a HID in terms of output or throw, it still manages to be quite an ultimate light, giving insane flood and throw.

It is quite heavy, but it also feels quite solid and sturdy which is satisfying.

The turbo mode of 3.8A is definitely nice and is very impressive, and kudos to the BTU designers on that part, bringing together all the benefits of other lights into one. This is well driven (high high, and low low), has high raw output and throws extremely well. I’m not kidding when I say it has a high raw output and throws extremely well – for it’s size it kicks some serious ass. It has great heat management, great threads, great anodizing, great UI, great regulation, no PWM, very high output and throw. This throws further than most (if not all) commercial aspheric lights, while having several times the lumen output.
Usually one has to compromise between high output and flood, or lower output and throw – multi-emitter and single emitter respectively. However the Shocker combines a high output multi emitter light that has dazzling flood AND throws better than most single emitter lights. This would be most suited for a Search & Rescue light, or when one is outdoors fishing or in wide open expanses.

Now this may not a replacement of an HID in terms of output or throw, But if you feel you want something smaller, lighter and safer then this would be a viable option.

If we can expect BTU to continue making lights of this calibre then they are definitely lights to be considered.

If you liked my review leave a comment Smile

Slewflash 

Edited by: sb56637 on 08/26/2014 - 17:19
MRsDNF
MRsDNF's picture
Offline
Last seen: 2 months 1 week ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Thanks Slewfish you lucky bugger. You will have to get it out tonight.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

makapuu
Offline
Last seen: 3 days 5 hours ago
Joined: 07/18/2011 - 00:08
Posts: 582
Location: Honolulu, Hawaii

Thanks Slewflash, mine should be in my hands by this Wednesday. I just love the look of the light when it’s standing on it’s head. Thick, no nonsense, ultra heavy duty sledgehammer appearance. If what you say is true that it uses the exact same head and reflector of the TK70. Then it should have the beam pattern I personally prefer over the TK75, judging by the beam shots that the Fenix dealers posted comparing the 2. More narrow and concentrated, less clover leaf artifacts, and hotter spot. Also because the BTU is driven harder than the Fenix TK70………………….Ooohhh Yeah.

eebowler
eebowler's picture
Offline
Last seen: 1 day 9 hours ago
Joined: 08/13/2012 - 11:34
Posts: 1830
Location: Trinidad and Tobago GMT -4
:santa: came early this year! Nice review! We need beamshots though. Hurry!!

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile

_the_
_the_'s picture
Offline
Last seen: 1 week 13 hours ago
Joined: 07/08/2011 - 06:22
Posts: 3646
Location: Finland

Thanks for the great review Slewflash! It nicely confirms my impressions (documented in my review of NW version) and shows how good the U2 CW version is. Good job!

Yours is also with the regulated driver, right? Do you have plans for testing the DRY driver in it?

=the=

 

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne
the wrote:

Thanks for the great review Slewflash! It nicely confirms my impressions (documented in my review of NW version) and shows how good the U2 CW version is. Good job!

Yours is also with the regulated driver, right? Do you have plans for testing the DRY driver in it?

Yeah the U2 CW version seems to have more output than the NW version, but that’s expected of course. Mine is indeed with the regulated driver, no PWM on any mode. I don’t have the DRY driver so I can’t test it. The website says the DRY driver is 4A+, but doesn’t specify how much because it’s dependent on batteries due to direct drive. I am curious about how it would perform with the DRY driver though.

Slewflash 

Pulsar13
Pulsar13's picture
Offline
Last seen: 11 months 1 week ago
Joined: 02/05/2012 - 10:23
Posts: 1909
Location: Malaysia

135kcd is similar to other tests Laughing, very nice. I think we can confirm the lux region now. 

3k lumens, big hotspot and still have 735m calculated throw. Now, that's a very respectable result.

Rod911
Offline
Last seen: 8 months 3 weeks ago
Joined: 08/25/2011 - 20:36
Posts: 456
Location: Melbourne
Pulsar13 wrote:

135kcd is similar to other tests Laughing, very nice. I think we can confirm the lux region now. 

3k lumens, big hotspot and still have 735m calculated throw. Now, that’s a very respectable result.

Those 3k lumens are only at turn-on. After three minutes, you lose out 1k lumens. The question is, can you tell that you’ve lost 1k of lumens going from 3k to 2k?

Also, is there any chance to do a longer run-time test to determine how regulated the driver is, say to 50% light output? As you say though, between 3 minutes to 10 minutes, the regulation on the BTU looks great.

_the_
_the_'s picture
Offline
Last seen: 1 week 13 hours ago
Joined: 07/08/2011 - 06:22
Posts: 3646
Location: Finland

Rod911 wrote:
Also, is there any chance to do a longer run-time test to determine how regulated the driver is, say to 50% light output? As you say though, between 3 minutes to 10 minutes, the regulation on the BTU looks great.

From my review:

It's very well regulated. Low voltage warning kicked in at about 1:22.

=the=

 

Rod911
Offline
Last seen: 8 months 3 weeks ago
Joined: 08/25/2011 - 20:36
Posts: 456
Location: Melbourne
the wrote:
snip

Awesome, thanks. Does look tempting. Always wanted something that’s over the 2k+ lumen mark and has the best of both worlds of throw and flood.

Only problem is, I’m off on my holiday this Saturday and if I were to order this light, I won’t get a chance to play with it, in say, until December 2013 or January 2014. Silly

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne
Rod911 wrote:
Pulsar13 wrote:

135kcd is similar to other tests Laughing, very nice. I think we can confirm the lux region now. 

3k lumens, big hotspot and still have 735m calculated throw. Now, that’s a very respectable result.

Those 3k lumens are only at turn-on. After three minutes, you lose out 1k lumens. The question is, can you tell that you’ve lost 1k of lumens going from 3k to 2k?

You lose those 1k lumens because the Turbo mode steps down after 3 minutes. You can turn it back on if you want though. Also, the difference between 3k and 2k is not very big (visually), at least indoors.

Slewflash 

Rod911
Offline
Last seen: 8 months 3 weeks ago
Joined: 08/25/2011 - 20:36
Posts: 456
Location: Melbourne

Both your review and the’s seem to indicate that, even if you were to turn on Turbo again, the light is so well heatsinked, that it handles the heat quite well. If that’s the case, why only limit it to 3 minutes worth of Turbo? Well, if I have to answer my own question, it’d be more likely be for safety reasons than anything else (unless I were to read again that long’ish BTU pre-order thread, the answer might be there :)).

MRsDNF
MRsDNF's picture
Offline
Last seen: 2 months 1 week ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Slewfish. Its dark outside now. What should you be doing? 

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne
MRsDNF wrote:

Slewfish. Its dark outside now. What should you be doing? 

I usually take my shots past midnight, because I might accidentally shine it on the road where cars pass by.

Slewflash 

MRsDNF
MRsDNF's picture
Offline
Last seen: 2 months 1 week ago
Joined: 12/22/2011 - 21:18
Posts: 13473
Location: A light beam away from the missus in the land of Aus.

Bugger. I sleep that time of night. Tomorrow.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

2100
Offline
Last seen: 2 years 11 months ago
Joined: 05/28/2011 - 10:28
Posts: 4512
Location: SINGAPORE

This is more like it. I’d agree with your figures, plus the Crelant and 85W HID Ebay (still a bit low but ok ba as it varies quite a lot)….

2100
Offline
Last seen: 2 years 11 months ago
Joined: 05/28/2011 - 10:28
Posts: 4512
Location: SINGAPORE
Rod911 wrote:
Both your review and the’s seem to indicate that, even if you were to turn on Turbo again, the light is so well heatsinked, that it handles the heat quite well. If that’s the case, why only limit it to 3 minutes worth of Turbo? Well, if I have to answer my own question, it’d be more likely be for safety reasons than anything else (unless I were to read again that long’ish BTU pre-order thread, the answer might be there :)).

Just press it again for Turbo. 3 mins is plenty, I mean i play with lasers. Smile (try that with some lasers and nasty things might happen at the 5th minute mark, some less).

It has a timer so that people do not accidentally burn it up while tailstanding.

2100
Offline
Last seen: 2 years 11 months ago
Joined: 05/28/2011 - 10:28
Posts: 4512
Location: SINGAPORE

BTW, it doesn’t really lose 1k lumens after the 3rd minute. Just press again for that close to 3k lumens output.

BTW Slewflash, your lumens are OTF/Out The Front correct? Smile

Wonder if i should get one. I am keen on the Solarstorm L3.

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne

2100 wrote:
BTW, it doesn’t really lose 1k lumens after the 3rd minute. Just press again for that close to 3k lumens output.

BTW Slewflash, your lumens are OTF/Out The Front correct? Smile

Wonder if i should get one. I am keen on the Solarstorm L3.

Yes they are OTF.

Slewflash 

sb56637
sb56637's picture
Offline
Last seen: 4 hours 12 min ago
Joined: 01/08/2010 - 09:29
Posts: 7079
Location: The Light

Thanks very much for the review! Frontpage’d and Sticky’d.

Budget Light Forum ...where Frugal meets with Flashlight!

rikr
rikr's picture
Offline
Last seen: 2 months 1 day ago
Joined: 09/03/2011 - 21:50
Posts: 2163
Location: Fenton, MO

Great review!! Thank you!!

 

 

 New Collection / Old Collection

 
Rezolution
Rezolution's picture
Offline
Last seen: 8 months 2 weeks ago
Joined: 10/04/2011 - 13:57
Posts: 545
Location: Pennsylvania
Slewflash wrote:
This is the kind of light which will pull your pants down if you try to put it in your pocket.

That’s why they call it the Shocker Wink

tkmckay
Offline
Last seen: 8 months 1 day ago
Joined: 07/15/2012 - 10:52
Posts: 288
Location: Canada

Another awesome review! I’m just shocked by how little the BTU heats up when on Turbo because of all that mass it has. On a side note, can one of those who own this light tell me where to place the probes to get the current reading so I can measure what the driver is putting out? I haven’t taken electronics since grade 10 or about 20 years so I’m kinda at a lost here.

Macnus
Offline
Last seen: 1 year 11 months ago
Joined: 12/10/2012 - 11:38
Posts: 14
Location: Norway

Hi!

Great forum! I just had to register! And to comment on this light and your review!

New to the world of flashlights, I jumped on the pre-order on this light, hoping it would be as good/better than a TK70.
It seems that it is, and I hope we will se a comparison with the TK70 soon.

Can`t wait to get it (right now it is howering over Paris with Fedex).

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne

Macnus wrote:
Hi!

Great forum! I just had to register! And to comment on this light and your review!

New to the world of flashlights, I jumped on the pre-order on this light, hoping it would be as good/better than a TK70.
It seems that it is, and I hope we will se a comparison with the TK70 soon.

Can`t wait to get it (right now it is howering over Paris with Fedex).

Thanks everyone for the kind words, and welcome to BLF Macnus!
As for the direct comparison with a TK70, we’ll have to wait until some other members get theirs, since I don’t own one :bigsmile:

Slewflash 

DENGOH
DENGOH's picture
Offline
Last seen: 1 year 11 months ago
Joined: 10/06/2012 - 05:26
Posts: 2157

I don’t think BTU can out throw TK70 based on what I have seen so far as below:
1.Temperature is not rising high enough on heatsink in Turbo mode, this shows that heat is trapped inside.
2.Based on pictures, I find that its reflector is not as shining as TK70.
3.BTU doesn’t have AR lens, this will cut the light a few percentage.
4.I saw a picture with TN31 in another review, to me, it clearly shows that TN31 out throw BTU. It is never so clear for TN31 vs TK70.

This is nice light but I personally think it should have done below:
1.Selling at about USD100 to USD120, more expensive than Trustfire X6 is still fine since it is new product.
2.Use 4 18650 instead of 3 as in Turbo mode, it will be drawing 3.8A. It pushes many batteries to their limit.

cool i'll see you when you get there

2100
Offline
Last seen: 2 years 11 months ago
Joined: 05/28/2011 - 10:28
Posts: 4512
Location: SINGAPORE
DENGOH wrote:
I don’t think BTU can out throw TK70 based on what I have seen so far as below:

Perhaps you’d like to check out the measurements first, both OTF lumens + lux (candelas)

Lights with quite a bit of mass esp around the head area just do not heat up that fast. Unless if we are talking about a TF X100 7 x XM-L with that crazy KD driver (esp if you heatsinked the driver so it sustains the crazy output longer) or something. Even the DRY does not heatup that much in the first 45 seconds in a tropical country @ 30 deg C.

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne

DENGOH wrote:
I don’t think BTU can out throw TK70 based on what I have seen so far as below:
1.Temperature is not rising high enough on heatsink in Turbo mode, this shows that heat is trapped inside.
2.Based on pictures, I find that its reflector is not as shining as TK70.
3.BTU doesn’t have AR lens, this will cut the light a few percentage.
4.I saw a picture with TN31 in another review, to me, it clearly shows that TN31 out throw BTU. It is never so clear for TN31 vs TK70.

This is nice light but I personally think it should have done below:
1.Selling at about USD100 to USD120, more expensive than Trustfire X6 is still fine since it is new product.
2.Use 4 18650 instead of 3 as in Turbo mode, it will be drawing 3.8A. It pushes many batteries to their limit.

1. The Shocker weighs 1,200 grams without batteries, the TK70 weights just 769 without batteries – Perhaps if I ran the test for longer we would see a more significant heating up.
2. The reflector does appear to hang slight rings, although it’s not a big problem.
3. Yes, the lens may cut a few % off the OTF lumens, however it also has more lumens (3000 vs 2200), so shouldn’t be considered while comparing the two.
4. There is also a thread on a German forum where the Shocker out-throws a TN31. Who’s to say one is definitely correct?

1. It’s more worth it than the TrustFire X6 in almost every way.
2. I agree that 4* 18650s could have been used. I do not know their reasoning, but if you want to run this at maximum output, don’t cheap out on the batteries (you never should anyway, they are the ‘life’ of your flashlights)!

Slewflash 

DENGOH
DENGOH's picture
Offline
Last seen: 1 year 11 months ago
Joined: 10/06/2012 - 05:26
Posts: 2157

Ok. I could be wrong about it since both of you are so confident about BTU. If most of the weight is in the head, the only thing that makes BTU so much heavier will be the aluminum reflector as TK70 is using plastic reflector. Unless the reflector really share a lot of the heat and cause the heatsink temperature to be so low. Also I forgot it kick down after 3 minutes, so it is not really on Turbo for 10 minutes.
Can you share the German website? I would like to see how is the comparison is done between TN31 and BTU.
One more thing is that Fenix official intensity spec is 130.5kcd. So it is very close to what is measured here for BTU.

cool i'll see you when you get there

Slewflash
Slewflash's picture
Offline
Last seen: 2 months 4 weeks ago
Joined: 07/05/2012 - 08:43
Posts: 1977
Location: Australia, Melbourne
DENGOH wrote:
Ok. I could be wrong about it since both of you are so confident about BTU. If most of the weight is in the head, the only thing that makes BTU so much heavier will be the aluminum reflector as TK70 is using plastic reflector. Unless the reflector really share a lot of the heat and cause the heatsink temperature to be so low. Also I forgot it kick down after 3 minutes, so it is not really on Turbo for 10 minutes. Can you share the German website? I would like to see how is the comparison is done between TN31 and BTU.

Sure: http://www.taschenlampen-forum.de/taschenlampen/20144-kurzreview-btu-sho...

Slewflash 

DENGOH
DENGOH's picture
Offline
Last seen: 1 year 11 months ago
Joined: 10/06/2012 - 05:26
Posts: 2157

Thanks. Unfortunately I can’t see any pictures. Maybe it is blocked or I need to register an account.
And wonder why the German measure 1033g with 796g for the head, and you mention 1200g.
Nevemind, it could be error in manufacturer specification. Let me measure TK70 head weight when I have time.

cool i'll see you when you get there

Pages