Sofirn SC31 vs SC31B

38 posts / 0 new
Last post

Pages

jch10400
Offline
Last seen: 1 month 3 weeks ago
Joined: 07/28/2016 - 06:38
Posts: 239
Location: California
Sofirn SC31 vs SC31B

I bought a Sofirn SC31 several months ago, and recently saw that they have introduced an updated model SC31B. I mainly use flashlights in my work and wouldn’t consider myself anything close to an expert, so I’ll leave the in depth technical reviews to the people who know what they are doing. During an email discussion with Sofirn about another flashlight, they asked if I would provide a comparison of the SC31 and SC31B so here goes:

SIMILARTIES: Both flashlights are the same size, and both have the same basic UI. Both have a high quality black anodization, and the on / off switch includes a “breathing” function. If you hold the switch down while the light is off a blue light built into the switch will slowly pulse from on to off and back on again. This function is why I bought the SC31, as I travel a few times a year and it makes it easy to find the light in a dark hotel room.

CONSTRUCTION DIFFERENCES: The only differences I could see are in the design of the head. The SC31 has a round head that could allow the light to roll if the clip isn’t attached. The SC31B has been updated with flat spots machined on the part of the head that contains the switch and charging port, thus preventing the light from rolling. The method of holding the switch into the head has also been changed. The SC31 has a square plate that holds the switch in, with this plate being held in place with four small screws. The SC31B has a more familiar threaded circular piece that is screwed into threads on the head.

LIGHT DIFFERENCES: Sofirn has added a fourth brightness level to the SC31B. The specs I found online for the three level SC31 are 10, 200, and 610 lumens. The SC31B levels are a little different at 10, 150, 400, and 1,000 lumens. I’m not familiar with the different LED’s, but the SC31B I received has a whiter (I believe it would be called “cooler”) light. The beam patterns look about the same when shined on the side of my house at night.

I realize this write up isn’t to the technical level usually seen in this forum, but thought it would be useful to someone who was looking for the basic differences in the two lights.

blind-eye
Offline
Last seen: 3 months 3 weeks ago
Joined: 05/27/2019 - 00:32
Posts: 125

Good comparison at a good time considering Sofirn’s national holiday sale.

Sofirn
Sofirn's picture
Offline
Last seen: 2 hours 37 min ago
Joined: 04/06/2017 - 04:22
Posts: 662
Location: Shenzhen, China

Thank you very much. Thumbs Up

Petr J.
Petr J.'s picture
Offline
Last seen: 1 month 13 hours ago
Joined: 05/20/2018 - 10:07
Posts: 385
Location: CZ

The comparison is very useful. I have the original model SC31 and I did not know what are the differences with the new version of SC31B. Interesting is another distribution of power levels and increase the maximum power to 1000 lumens. I modified my flashlight slightly. He replaced the tube and now I have a Sofirn SC31 mini flashlight for 18350 battery.

Muto
Offline
Last seen: 4 hours 50 min ago
Joined: 09/04/2012 - 16:42
Posts: 2362
Location: Southeast, PA

Have both as well.
The older SC31 has a much rosier tint compared to new SC31B.
But the new tint is nice bright white.

Non scientific Quick ceiling bounce test in the small Toiletron test space using both factory supplied batteries at 4.10 volts yields approx this;
Please keep in mind cooler tint is giving more bounce back so it is no real surprise that the SC31 readings are a little low.

SC31
Low 8
Med 160
High 490

SC31B
Low 18
Med 180
High 500
Turbo 1060

Later,
Keith

“History doesn’t repeat itself, but it sometimes rhymes,” Mark Twain

..
Well I don’t know if I’m coming or going
If it’s them or me
Oh, but one things for certain
Willie Nelson only smokes the killer weed

After the Apocalypse there will be only 2 things left alive, Cockroaches and Keith Richards

amishbill
amishbill's picture
Offline
Last seen: 2 months 3 weeks ago
Joined: 05/01/2019 - 10:03
Posts: 695
Location: GA

That exactly mirrors my observations. In informal testing, the B has a cooler tint, a more ‘standard’ looking power button, and for lack of a better term, a Turbo mode at the end of the standard brightness levels.

DIY LT1 battery wrap image. "PDF on Google Drive":https://drive.google.com/open?id=1IHIEOi1NXu868IYNCzIM7D2Ulpxchmww

Fresh Sanyo NCR18650GAs already wrapped "for sale HERE":http://budgetlightforum.com/node/69120 if you like.

rb0nd007
Offline
Last seen: 7 months 2 days ago
Joined: 09/20/2019 - 18:13
Posts: 13

This is great. Thank you for the quick overview.

Helios azimuth
Offline
Last seen: 3 hours 40 min ago
Joined: 04/08/2019 - 22:23
Posts: 259
Location: Sierra Nevada Mountains

Very useful information. Looking forward to receiving the SC31B.

djozz
djozz's picture
Offline
Last seen: 7 hours 48 min ago
Joined: 09/07/2012 - 17:04
Posts: 16937
Location: Amsterdam

I wished that the new version would have reserved the long press from off to the lowest mode instead of switch-breathing. The breathing function is much less important to me and could be activated by a triple-click or so.

Also, I like the construction of the switch plate with 4 small screws, pity that they abandoned that.

Also, I liked the lower max of the old version that is sustainable without any thermal regulation.

Conclusion for me is that the SC31B, with all Sofirn’s good intentions, is moving towards what any other tube-style 18650 light is doing. For me that is a downgrade.

Streamer
Streamer's picture
Offline
Last seen: 5 months 1 week ago
Joined: 12/01/2011 - 21:06
Posts: 3792
Location: TX

For those with no lights at all, SC31B is a serious Cash BUDGET Cash UPGRADE Cash for the muggles on the planet. Get it while you can. Thumbs Up

flightless22
flightless22's picture
Offline
Last seen: 4 hours 58 min ago
Joined: 11/19/2018 - 12:07
Posts: 287
Location: California

The bezel on the new version is easy to open up with a strap wrench. Thumbs Up I couldn’t ever get the old version to budge Angry .

The UI needs improvement, nothing fancy just simple shortcuts to low, turbo and strobe would suffice.

All in all it’s a great gift light.

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Double click from on or off for strobe

The UI is just fine for the intended user … your mom

Considering that it comes with usb charging and bat this light is cheaper than a convoy s2+ Or clones once you add in those costs

And is more user friendly overall when you consider they dont need to take out the bat and plug it into the charger

If the reliability holds up as well as sofirns CS then its fair to say that this light would be yardstick against which all simple sub $20 dollars 18650 lights should be judged against

Not to mention there no big purple halo around the beam like my s2+ Wink

contactcr
Offline
Last seen: 10 hours 4 min ago
Joined: 05/19/2017 - 18:52
Posts: 2955
Location: US

SC31B from Amazon US from Low to High:

Ambient = 725.7 Lux, CCT = 6752K (Duv 0.0010)
Color Rendering Index (Ra) = 65.4 [ R9 = -33.4 ]

Ambient = 6218.6 Lux, CCT = 6820K (Duv 0.0006)
Color Rendering Index (Ra) = 65.5 [ R9 = -32.4 ]

Ambient = 17191.5 Lux, CCT = 6771K (Duv 0.0007)
Color Rendering Index (Ra) = 65.5 [ R9 = -32.4 ]

Ambient = 40755.6 Lux, CCT = 6635K (Duv 0.0014)
Color Rendering Index (Ra) = 65.8 [ R9 = -33.0 ]

LightObsession
Offline
Last seen: 1 month 3 weeks ago
Joined: 02/21/2018 - 00:15
Posts: 428
Location: Illinois, U.S.

Thanks for the comparison.

I should receive my SC31B in two days.

I also would prefer direct access to low from off, but couldn’t pass up the Sofirn combo price for the SC31B.

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

Just thought I’d add that the SC31B lumens tested on High are no greater than 760 840 at turn on and 720 815 at 30 seconds. This is the cool white version. The 4000K version would be even lower

Modes are Eco, Low, Med, High

Measurements taken a a PVC lumen tube calibrated with maukka lights. Battery used was a Samsung 30Q

Has a firmware bug currently where turning off on Medium switches back on High

Yet again another overrated flashlight from Sofirn. They used to be almost spot on when they first began.

EDIT: cleaned, re-calibrated my equipment and used a new 30Q for the new lumen measurements above.

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

And yet no one cares about the firmware bug or the “700 lumens” (ill wait for a few more testers to confirm)

It is literally the best deal simple to use USB charging lamp right now

Haters can hate, but ive given a few to “muggles” and they dont give a damn about what some flashaholic thinks Wink

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

Bearbreeder wrote:
And yet no one cares about the firmware bug or the “700 lumens” (ill wait for a few more testers to confirm)

It is literally the best deal simple to use USB charging lamp right now

Haters can hate, but ive given a few to “muggles” and they dont give a damn about what some flashaholic thinks Wink

Very few know it’s 700 lumens. It’s good to actually know what you’re buying so you know a genuinely rated light at 1000 lumens is a better upgrade in the future.

I’m trying to do my best fighting a marketplace filled with fake ratings. I’m probably one of the few store owners in the world that sell lights at their true rating.

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Oh you mean yr test tube numbers that dont mean a thing in the real world?

I mean BLF flashaholics swore up and down that the sc31b has no stepdown, yet they COULDNT EVEN NOTICE a halving of lumens by eye

http://budgetlightforum.com/node/69411

The difference between 700 and 1000 is minimal in real world usage

Maybe you should “go after” convoy for their RECURRING biscotti issue that bins the light into a single mode group

Now THAT is a real firmware issue for the last 3 years, yet convoy keeps selling lights with the issue

https://www.reddit.com/r/flashlight/comments/bymyt3/beware_convoysimon_i...

Do you even own a sc31b? Wink

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

The thread you linked to has my video actually showing the test of the step down and lumens lol so that must mean I own one. I also sell them.

I love the Sofirn lights, I sell almost every model but I’m still going to test and post the results.

I’ve heard about that issue on the Convoy’s yet I’ve built and sold over a hundred flashlights using that driver and haven’t seen it myself. Just like ToyKeeper says that it happens randomly on some but not all.

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Are you gonna go after convoy for their “lies” lumen claims on the s2+ too?

I mean not only is there a firmware issue that locks the light, they only put out around 700 lms too on the 8×7135 despite claiming “1000”

The sofirn “firmware” issue is pretty benign in comparison

Theres been 3+ instances of newly bought s2+ on here and reddit in the past 2 months having this issue

http://budgetlightforum.com/node/69732

Notice how no ones is helping the poor guy Wink

Time for you to take the flamethrower to convoy!!!

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

Bearbreeder wrote:
Are you gonna go after convoy for their “lies” lumen claims on the s2+ too?

I mean not only is there a firmware issue that locks the light, they only put out around 700 lms too on the 8×7135 despite claiming “1000”

The sofirn “firmware” issue is pretty benign in comparison

Theres been 3+ instances of newly bought s2+ on here and reddit in the past 2 months having this issue

http://budgetlightforum.com/node/69732

Notice how no ones is helping the poor guy Wink

Time for you to take the flamethrower to convoy!!!

Why do you have such a sour attitude? I’m only reporting my tests. How is it different than a review on pros and cons?

You sound like a Sofirn fan boy that can’t handle hearing a little criticism.

Maukka posted that his 3B tint was likely a 4C by mistake which tested 720 lumens on my same light. The Cool white variant tested at 860 – 900 lumens on mine which varied between different builds.

I report on Convoy, Astrolux, BLF among others just the same. I sell heaps of brands.

Texas Ace Lumen Tube calibrated with maukka lights

phouton
Offline
Last seen: 11 hours 16 min ago
Joined: 10/23/2019 - 19:06
Posts: 430

BearBreeder I agree the lumen wars are pointless and there’s little real-world value in the 700 lumens vs 1000 lumens. Having said that, it’s valuable for people to know what they’re getting and how a given company’s claims stack up objectively. No need to sling mud at other companies though.

Funtastic Thanks for measuring and reporting, especially since most people have no way to verify the lumen claims.

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Has anyone confirmed you 700 lumens measurement?

Wake me up when they do Wink

Yr lumens measurements dont really matter too much for real word usage

What DOES matter is the actual graph itself (regulated or not) and actual runtimes

And testing for LVP, and making sure the charger terminates properly and doesnt trickle

This vid matters much more than a test tube number Silly

Its amazing how certain companies get a pass here

Convoy for their biscotti issue, and their “send you a driver” warranty fix

Or astrolux with their lack of warranty after a month or two

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand
Bearbreeder wrote:
Has ANYONE confirmed your 700 lumens measurement?

Quite a few on BLF have the same test equipment sold by Texas Ace and their numbers are very close. Same goes for Matt’s who’s recent equipment tested almost the same.

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

But have they gotten 700 lumens out of the sc31b to confirm your numbers … Wink

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand
Bearbreeder wrote:
But have they gotten 700 lumens out of the sc31b to confirm your numbers … Wink

It doesn’t matter what light they’ve tested, it’s all the same because it’s properly calibrated. If I wasn’t confident in my test numbers it wouldn’t make sense to sell my lights below the stated rating.

You could jump on over to Maukka’s thread and inquire from the one who sells the calibration lights.

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Ummmm so no one else has confirmed your numbers …

Theres a reason why we dont rely on a single data point Wink

Perhaps you got a sc31b with an unintentional firmware throttle …

Note that the difference matters much in the real world, you can see in the vid above that the sc31b is quite close to the sp31v2

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

Did you miss where I said I sold “them” I have quite a few and I test every light before my customers get it.

The SC31B has a much tighter beam so it throws similar to the SP31 but doesn’t have the same spill

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

I didnt miss the part where no one has confirmed your numbers yet …

Since you have a few, whats the current draw on turbo? Wink

Can you tell the difference?

Funtastic
Funtastic's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 06/26/2014 - 02:14
Posts: 655
Location: New Zealand

Sorry, I’m not going to continue with this point less conversation.

As above someone else agrees that sharing numbers is beneficial

Texas Ace Lumen Tube calibrated with maukka lights

Bearbreeder
Offline
Last seen: 5 months 3 weeks ago
Joined: 09/02/2014 - 18:03
Posts: 334

Well share the current draw please

Since thats EXTREMELY important so that if someone wants a protected bat, they get one under the threshold

Oh and the LVP test which is extremely important too

Pages