Not enough details to know about the UI or internals but as far as being able to use cr123a, AA and AAA batteries, the SF01 would appear to be a copy of the Streamlight Protact 1L-1AA, which does take cr123a and AA (and possibly AAA although with a little wiggle.)
The springs seem to be “big” to be shrunk, so maybe it can take all of the 3 types!
I assume that it would only be good for AAs or AAAs (in my case) as CR123s are expensive and it doesn’t seem to be compatible with Li-Ion’s :zipper_mouth_face:
Hi to all, i received my Utorch SF01 yesterday, and i’m being testing it.
I can confirm that it work with AA, AAA and CR123A. It’s a bit tricky to put in the AAA, you have to center it well to make electric contact but once closed i can shake it hard without any problem( a very stiff spring keep it in place).
The LED seem a cool white Cree XP-G2( in the manual title says CREE XR-G2, gearbest says XR-E, maybe a mix of XR-E with XP-G2 ), I tried to unscrew the head but didn’t managed to, yet!
This flashlight really is a streamlight copy it even has the same TEN-TAP® Programming from streamlight:
three different operating programs:
high/strobe/low 2) high only 3) low/high
Visually i only see the two differences from the PROTAC 1L-1AA, the knurling in the tail cap and having just 3 instead of 4 fins around the head.
Tail cap currents:
CR123A:
High 0.884 A
Low 0.335 A
AA:
High 1.41 A
Low 0.430 A
You can program it like the TEN TAP from streamlight, they copy everything… for me high seem more like 300 lumen with cr123a, i test it last night with ceilingbounce app and i didn’t see any drop in the first 71 minutes i had only one cr123a home and i use it to measure tail cap currents before, and other tests so was not completly new.
Low seems like 60-70 lumen on cr123a
High on AA around 150 lumen
Low on AA arround 40 lumen
Good enough for the price but don’t expect miracles, threads are triangular not square, didn’t come lubed, lens not AR coated and reasonable SMO reflector. But LED seems a original cree xp-g2, good springs and switch.
Probably not, didn’t test it because the info i gather says i doesn’t work and i don’t wanna “blow it up” … other think is that i didn’t manage to open the head(meaning didn’t see the driver yet)
I’ve run for a while (minutes) on 16340 without issue. no smoke or LED discoloration. All modes work with brighter levels but can’t say about long-term usage,
Finally tested it with a 14500 and a 16340 they work and they are brighter I estimate around 450 lumen @ 1.32A(tail cap current). I tested it briefly I don’t know how it will handle the extra power and heat…
0K, so that Utorch SF01 @ GB can take CR123/16340s, AAA/10440s or AA/14500s. From the above comments I can infer it may use a boost/linear hybrid driver. However, does it implements some sort of low voltage warning or cut-off? Piece of shit cake AA/AAAs plus one run and dump CR123s specs cell support tells me it may not, which is a bummer. :|
For the above people sticking li-ions inside beware: boost/linear driver will continue boosting and discharging li-ion/LiFePO4 cells maybe without too much discernible change in output until voltage is down to harmfully low levels, for li-ion cells at least. This is the same crap which happens with shooting range meat cheapass SK68 flashlights. :-D