REVIEW: Sofirn SD05 Scuba Diving Flashlight

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Zappaman
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The SD-05 can use ANY 21700, but for my personal preference I’ll take the 50G or another good HIGHER capacity battery (Vs. higher current batteries as turandot lists above).

The SD-05 is quite a good light above water too. I have been using one the last few months by the back door. It really throws better than I thought it would too. And the 21700 is a real plus. I like both the new IF25a and this “dive” light the most lately and the SD-05 doesn’t heat up as fast as the IF25a, but gets VERY close in beam-width and throw with one emitter (Vs the four in the IF25a).

I AM a real fan of this light and as a diver I am looking forward to “taking her down” this winter in Cozumel IF covid doesn’t *@$! that trip up like it did last month (when I got my SD-05 for THAT dive we canceled). Flat Stare

ZappaMan

turandot
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The Sofirn brand has confirmed to me that I can use any 21700 batteries in the max length 71mm, max diameter 21.9mm

turandot
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Nachtfeuerzeug wrote:

@ turandot, 4000mAh batteries and above are what you want but compare the specified battery diameters of those in my review with the ones you’re interested in.  The Samsung 50E will fit fine.


Ok, thanks!
What’s the difference between 48A max current output (Sofirn 21700 4800mAh / 48A) and 10A (Samsung INR21700-50E 5000mAh – 10A) max current output for flashlight operation (brightness, temperature,…..)?
Nachtfeuerzeug
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turandot, Welcome to BLF!!! 

 

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, XPL HI 5000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | TIR Upgrades | EagleTac clip | Ultrafire C2 w/6A 20mm & LH351D | S2+, Biscotti, Nichia 219C 2700K |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3) || Sofirn SC31 Pro 5000K

Nachtfeuerzeug
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turandot wrote:
Nachtfeuerzeug wrote:

@ turandot, 4000mAh batteries and above are what you want but compare the specified battery diameters of those in my review with the ones you're interested in.  The Samsung 50E will fit fine.

Ok, thanks! What's the difference between 48A max current output (Sofirn 21700 4800mAh / *48A*) and 10A (Samsung INR21700-50E 5000mAh - *10A*) max current output for flashlight operation (brightness, temperature,.....)?

The A refers to the current (amperage) that the battery is rated to produce. In my example SD05, it doesn't pull more than 7.1 amps.

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, XPL HI 5000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | TIR Upgrades | EagleTac clip | Ultrafire C2 w/6A 20mm & LH351D | S2+, Biscotti, Nichia 219C 2700K |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3) || Sofirn SC31 Pro 5000K

turandot
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Nachtfeuerzeug wrote:

turandot wrote:
Nachtfeuerzeug wrote:

@ turandot, 4000mAh batteries and above are what you want but compare the specified battery diameters of those in my review with the ones you’re interested in.  The Samsung 50E will fit fine.


Ok, thanks! What’s the difference between 48A max current output (Sofirn 21700 4800mAh / 48A) and 10A (Samsung INR21700-50E 5000mAh – 10A) max current output for flashlight operation (brightness, temperature,…..)?

The A refers to the current (amperage) that the battery is rated to produce. In my example SD05, it doesn’t pull more than 7.1 amps.


Perfect! Thank you very much.
xevious
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Great review, Nachtfeuerzeug! Beer

Nachtfeuerzeug
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xevious wrote:
Great review, *Nachtfeuerzeug*! :BEER:

Thank you xevious!

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, XPL HI 5000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | TIR Upgrades | EagleTac clip | Ultrafire C2 w/6A 20mm & LH351D | S2+, Biscotti, Nichia 219C 2700K |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3) || Sofirn SC31 Pro 5000K

Zappaman
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Quote:
The A refers to the current (amperage) that the battery is rated to produce. In my example SD05, it doesn’t pull more than 7.1 amps

- which is exactly why putting a 40T or other super high current battery in the light is fine and all; but your not getting any more output from the light over the average high capacity 21700 (which run around 10 amps continuous… covering the light’s max draw by almost 3 amps).

So why not add capacity? I ALSO can confirm using my Molicel P42a in my IF25a from Sofirn that it gets hot VERY fast compared to the 50G (which does get as hot, but not as quickly). Wink I’m sure there is a “smidgen” more output on the Molicel, but I really can’t see the difference when I light up the back pasture with both the IF25a and SD-05 using the 50G (actually a wrapped 50G called an “Epoch 5k” from 18650batterystore- great company I’ve been buying from this year- ALL authentic and everything disclosed re. their own wraps).

ZappaMan

JaredM
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Sorry if I missed it, but are these using 3V or 6V variants of the 50.2? Has anyone pulled the driver?

EDIT: Found this post here
http://budgetlightforum.com/comment/1597622#comment-1597622

Seems to be 6V.. at least that sample was.

pennzy
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The newer version use the 3 volt 50.2.

JaredM
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Thanks pennzy!

Wanting to go high CRI.. 144 was my only good option at 6V. 3V opens a lot of doors.

deeuubee
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Anybody have information about the new SD05 SST70, and how it compares to the XHP50.2?

(Other than what’s on Sofirn website.)

I would imagine any reviews or beamshots on the website are from the XPH50.2

Seems like they ran out of XHP50.2 and changed to SST70.

They say better throw, it would be nice to see a comparison.

Nachtfeuerzeug
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Hey Deeuubee, That's interesting about the SST70. According to Djozz test, https://i.imgur.com/3YlpAhC.jpg

and if the driver doesn't push that Luminus more than 8 amps, it should be quite similar. Perhaps a throwier beam!

EDC

FW3A, SST20 4000K || S21A, Crescendo Mtn20DD, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, XPL HI 5000K | L2 w/Mtn17DD Zener Guppydrv, XHP-50 | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | TIR Upgrades | EagleTac clip | Ultrafire C2 w/6A 20mm & LH351D | S2+, Biscotti, Nichia 219C 2700K |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3) || Sofirn SC31 Pro 5000K

deeuubee
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Nachtfeuerzeug – Thank you for all the information. It’s overwhelming sometimes trying to figure changes out.

I think I’m just gonna have to guinea pig it. Smile

JaredM
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I bet it is quite a bit of tighter beam. Wouldn’t be surprised if its nearly double the cd/lm.

Tendou
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What kind of driver did the old and new sd05 uses? Which one are more efficient? I want to buy them but cancelled buying since I don’t know what other difference they made to the light.

pennzy
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The old was regulated and the new is not . Old emitter was 6 v and new is 3 v. There are differing opinions as to which is better. I have the new and the one good thing is it does not have a timed stepdown, only thermal stepdown. This could be a huge difference in actual use, especially in water.

Tendou
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The new one using fet driver?
And I guess the new one have pwm?

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Yes, FET driver. I can’t see pwm but I am not sensitive to it.

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Pretty sure yes to both (fet/pwm). With that said, this is one of my favorite winter outdoor 21700 lights (in the rev2 with the XHP-50.2; no step down). It THROWS for it’s size and doesn’t heat up as fast as my IF25a. Beam isn’t too bad color-wise either.

I WAS going to do an actual diving review for the (XHP 50.2) SD-05 last August for Sofirn, but Covid “effed” those plans up. We tried again for this X-mas in Cozumel and had to cancel again when Covid got “hot” again this fall.

I have an old SD-02 that worked well for a night dive taken back a few years ago. What was cool is our dive-master was using a small dive light to “strobe” so our group didn’t get mixed up with several other groups on the same reef that night. This was the FIRST time I though of a strobe being VERY useful.

Time will tell on the SST70 and I do hope it’s not too narrow in output. I typically “hang” a few feet off the coral and like turning under for cave or shelf views from between 3 ft. away to 15 ft. I want a nice wide beam but some “punch” on high if I need to see further. From what I can tell on land so far- the SD-05 XHP-50.2 will do good when I get it down (one day) Cool

ZappaMan

Tendou
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What I understand, the old 6V 50.2 is regulated.
The newer 50.2 3V is not regulated.
And the newest sst70 is not regulated.
Am I correct?

Funtastic
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Tendou wrote:
What I understand, the old 6V 50.2 is regulated. The newer 50.2 3V is not regulated. And the newest sst70 is not related. Am I correct?

The SST70 is 6V which means they must be using the old driver

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

Tendou
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Funtastic wrote:
Tendou wrote:
What I understand, the old 6V 50.2 is regulated. The newer 50.2 3V is not regulated. And the newest sst70 is not related. Am I correct?

The SST70 is 6V which means they must be using the old driver


So the sst70 should probably be regulated?

Waiting for review of the new sd05 with sst70

Funtastic
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Tendou wrote:
Funtastic wrote:
Tendou wrote:
What I understand, the old 6V 50.2 is regulated. The newer 50.2 3V is not regulated. And the newest sst70 is not related. Am I correct?

The SST70 is 6V which means they must be using the old driver


So the sst70 should probably be regulated?

Waiting for review of the new sd05 with sst70

I doubt there’ll be a review when Sofirn are changing back to the XHP50.2 version once they’re available again, there’s a supply issue.

Texas Ace Lumen Tube calibrated with maukka lights

New Zealand store – https://www.piercingthedarkness.co.nz (NZ customers only)

YouTube channel – https://www.youtube.com/channel/UCIUWi2vYp4CWrRkOJM70t_w/videos (Demos for my customers, and reviews)

Tendou
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Funtastic wrote:
Tendou wrote:
Funtastic wrote:
Tendou wrote:
What I understand, the old 6V 50.2 is regulated. The newer 50.2 3V is not regulated. And the newest sst70 is not related. Am I correct?

The SST70 is 6V which means they must be using the old driver


So the sst70 should probably be regulated?

Waiting for review of the new sd05 with sst70

I doubt there’ll be a review when Sofirn are changing back to the XHP50.2 version once they’re available again, there’s a supply issue.

That’s unfortunate. So what do you think the differences in the sst70 and xhp50.2 do you think are there?

And somewhat related will they again use xhp35 for c8g again?

Tendou
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Zappaman wrote:
The SD-05 can use ANY 21700, but for my personal preference I’ll take the 50G or another good HIGHER capacity battery (Vs. higher current batteries as turandot lists above).

The SD-05 is quite a good light above water too. I have been using one the last few months by the back door. It really throws better than I thought it would too. And the 21700 is a real plus. I like both the new IF25a and this “dive” light the most lately and the SD-05 doesn’t heat up as fast as the IF25a, but gets VERY close in beam-width and throw with one emitter (Vs the four in the IF25a).

I AM a real fan of this light and as a diver I am looking forward to “taking her down” this winter in Cozumel IF covid doesn’t *@$! that trip up like it did last month (when I got my SD-05 for THAT dive we canceled). Flat Stare

So For non diving use do you think someone who already have IF25A need to get the SD05 or it’s very similar?

I probably get the SD05 anyway. Big Smile Just waiting for SST70 review.

Zappaman
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All bets are off as the SST70 is an unknown (kinda, in this light anyway). But generally speaking… the SD-05 has more MASS than the IF25a and so it CAN run longer given basic physics. I WAS waiting for the 5k forever and now I see only the 6.5k SST70 and so… I’ll “stay on the fence like you and wait for the review” Big Smile

ZappaMan

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Would it be safer to use a protected battery in the SD05 just in case water does creep in and creates a short?   I've always been using protected in my Sofirn SD02 diving light just in case.

Zappaman
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Hum… I’m not sure protected Vs. unprotected would matter much if water were a factor. I’d guess the protection circuit would be “bi-passed” by the water itself- but not sure. I have dove with the SD-02 and didn’t think twice about it Big Smile

ZappaMan

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