Looks like they updated Sofirn SP10A on 15 December with the same driver SP10B uses. So basically both of them A and B are now the same. :confounded:
No idea about resistor modding the driver. However I did mod one of these yesterday.
- Driver is 17mm. I replaced it with a Mountain Electronics 17mm driver with Emisar D4 UI.
- I kept the switch. Chopped up the stock driver and salvaged the switch. Glued it to the new driver with arctic alumina and a plastic support strut.
- Replaced stock emitter with XPL HI 5A2 on copper Noctigon.
- Added a thin metal ring around the switch button. Cut from 0.025” aluminum sheet and then filed down into shape. This turns the raised button into a flush button. Risk of accidental pocket activation is much less.
Overall fairly happy with the mod. For a side-switch mod, not too hard and the light is now much brighter with a better UI. Now only runs on 14500 though.
Some other observations from a modder perspective:
- The metal switch boot has a rubber seal underneath. This is all held to the inside of the head with the metal switch retaining ring. This is good as the light remains waterproof even if you change the switch on the driver.
- The driver is 17mm and is held in place with a reverse-threaded retaining ring. There are slots on either side to prevent the driver from turning. On the stock driver, the piece with the switch on it fits those slots. For a my modded driver I cut a small section of large paperclip, then filed a notch in the right side of the driver and soldered it into place. Because of the retaining ring having something keeping the driver from rotating is a good idea.
- The star is thin aluminum and about 14mm in diameter. The stock emitter and star won’t stand up to a FET driver and IMR cell.
Is the MCU from AVR series? would be glad if you posted a few pictures 
thanks for the comparison to the utorch, and overall review
I’m with you on the asking for a brighter turbo for more WOW as you put it.
please post back if you experience issues with it down the road
I have blinded myself more than once getting use to the UI. If I have never before used a multi mode flashlight the SP10b UI would be no big deal. I really like the Olight batons UI a lot. If I could improve anything about the SP10b I would add a strong magnet in the tail cap. 
I received mine today, and the memory on this flashlight…well, it takes me a bit “off” of it! It is not unbearable, but I just wish it didn’t have it! I wish it always started always on ML mode (which I think is a GREAT moonlight mode, lower than the 0.5 Lumens of the Olight S1R Baton). Personal preferences as always 
Does anyone know if memory can be taken by removing any physical component / chip of the driver?
Sorry, I don’t know much about electronics :person_facepalming:
Also, the long click for ON…well, I have to get used to it!
It does have memory mode. It can start on ML, low, or medium. Turbo takes double click. Just chose moonlight, low, or medium and then turn off flashlight in selected mode. Then one fast click opens the chosen mode.
Yup, I know, but I wish I didn’t have to remember in which mode I used it last time. The Olight UI is great for that because you can always start on the lowest mode. The Sofirn Sf14 always starts on the lowest mode as the Manker E11 (I’m referring to lights I have).
I wish the SP10B would be like that 
But it’s just a preference as I mentioned
And at least on mine, it is not a fast but a long click for ON. (Maybe we have different versions of the light? Or maybe I’m just mistaken… :person_facepalming: Gotta check it tonight!)
Not a short click (brain fart) but a long click opens saved mode once chosen. Operator error once more.
The only 14500 batteries I own are Xtar protected. They fit just as well as eneloops. Photo proof above.
Why the hell did they update SP10A with the same firmware SP10B uses even though everyone did not like it?? :person_facepalming:
I just ordered a blue SP10B as it looks like a very decent 14500 EDC light with side switch for the price… and a possible affordable replacement for the UT01 - have a pile of them i can’t honestly gift out considering the reported potential issues in another thread.
However, reading the above comments regarding the UI… it reminds me of the Astrolux S42 fiasco - great light with a terrible UI. I’ll see for myself when i have it in hand.
The SP10B has a nice UI (for me)!
–3 regular modes: a true Moonlight mode; a nice Low (despite there is a “high” jump from moonligh); and a Medium that on 14500 Li-Ion has a similar level as the High mode on AA Alkaline or NI-MH ;
- 2 special modes: Double click for High and 3 clicks for Strobe!
- And lockout with 4 clicks (initially it was hard to enter it, but with some use you get the timing to lock/unlock).
I use it with 14500 battery and it is quite nice! Maybe UT01 / Manker E11 has higher output on the highest level, but the SP10B is quite nice, specially for the price :+1:
I’d only change it to not have memory and always start on Moonlight, but that’s me
And the LED tint is good as well, a Neutral white, no artifacts or major tint shifts! (at least on mine).
I guess it will depend on your use and your personnal preferences of the UI! But overall it is nice!
I don’t like memory either. Also would like another mode group without moon mode. LV warning for NiMH should be included.
I like it. No memory was the only thing I disliked about my TG06. Always starting on high/turbo, was generally too much. The UI on this takes a little getting used to, but after carrying for a couple weeks, I’m used to it. Memory start on high, double click for turbo :+1: Reversible clip and I would buy stock.
Hum, please note that on the User Manual, the manufacturer doesn’t say it takes Ni-MH batteries (although it takes it of course). Maybe it is because of that specific aspect that it doesn’t mention use the Ni-MH!
I will avoid using Ni-MH on it. Had bad experiences with lights that drained some batteries too much, ’cause they don’t have LV warning nor protection.
Yup, it gets a bit to get used to it, specially because you always think it has 2 modes as the moonlight is so low
And I agree with you, reversible clip should make this light even better!
Sofirn could revise this, not only on the SP10A/B but also on the SF14 (all use the same tubes…).
Enable/disable for Mode memory and Moon mode should please all folks I believe.
Sofirn already revised SP10A on dec15th with the same firmware as this current SP10B uses. I guess they didn’t listen afterall :person_facepalming:
Just playing with mine in more “detail”…
Hate alkaleaks at this point, got a bunch of LFP cells instead which I’m using.
First thing I noticed is that LFP (3.2V) levels are equivalent to alkaleaks (1.5V), not Li-ion (3.7V+). Odd. No idea why. Thought the higher voltage would give me the higher levels per mode. Both sets levels look identical, even after a few times flipping back’n’forth. I might be wrong, though, but to me, turbo(alkaleak) = turbo(LFP).
Now, there’s nothing scientific I’m doing, no lumenometer, nothing, just white-ceiling tests for both cells.
Forgot about damned strobe. Thought it didn’t have any, but yeah, mine can get to it in 3 clicks. 
Lockout/Unlock can be 4 clicks or sometimes 5 (random). Doesn’t bug me.
Yeah, would prefer not so high a jump between firefly and low, but it doesn’t bug me… yet. For looking up-close, it’s absolutely perfect, but for, say, checking a clock on the far wall, it might be too dim, and low will definitely be too bright. My SF31W and TK4A have a perfect clock-on-wall moonlight level. Nice and low without being too low. But this is true firefly mode, not even moonlight, so is quite nice for just looking down to see where your slippers are.
Yeah, nice beam, not too fried-eggy at all, just a bit of a yellow corona around the hotspot.
Still, rather nice for an AA-based light, overall! Think I’ll put this in rotation…
Are there any deals/coupons on this light currently?
The price I’m seeing on AE is $12.92 right now.
Wellp, 16 - 10% on Amazon ~= 14.
But you get it in days instead of months. :smiling_imp: