[BLF special edition light] new Sofirn AAA twisty high CRI Yuji 5mm LED (CCT 3200K or 5600K) for 6.50 USD

2863 posts / 0 new
Last post
Agro
Agro's picture
Online
Last seen: 2 min 43 sec ago
Joined: 05/14/2017 - 11:16
Posts: 5756
Location: Ślōnsk
Cosmodragoon wrote:
thisnameisvalid wrote:
What over 7 months on a keychain looks like Big Smile

This is my general complaint with aluminum. You can get a nice surface treatment on there. It will look pretty when new. The underlying metal will still be aluminum. Let it bounce around a hot pocket with coins, keys, etc. and this is what usually happens. Some people don’t mind but it bugs me. So I try to take steps to avoid the tumbler action with my aluminum lights.


This always reminds on the following post:
https://www.candlepowerforums.com/vb/showthread.php?120599-Show-your-bea...
"FREI" wrote:

Inova after 2 years of use, Xeno after 3 month:

Some alu lights last much longer than the others.

Silent_Star
Silent_Star's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 06/09/2016 - 14:52
Posts: 217
Location: Tel-Aviv

Di_Joker wrote:
Barry0892 wrote:
Omega_17 wrote:
We need a similar BLF edition of this fantastic AA light!

https://www.aliexpress.com/store/product/Sofirn-New-SP10-V2-0-LED-Flashlight-AA-14500-Flashlight-EDC-Pocket-Light-Cree-XPG2-550lm/2933049_32841154512.html?spm=2114.12010612.8148356.3.17944773ZjzAJu

Actually sofirn change SP10 V2 to SP10S by using LH351D 5000K 90CRI, and same UI.

This is great news, need more flashlight models with emitters LH351D !!! I think many will be interested in the LH351D 4000K 90CRI and maybe even 3000K. Good to have a choice. I use TIR – optics in my Sofirn SP10b, maybe a Sofirn will also sell such an option?

Yes, I am want 3000K too. Hope, Sorfin will done it.

 Genesis 1:3 "And God said, "Let there be light,"  and there was light."

sbslider
sbslider's picture
Offline
Last seen: 2 weeks 6 hours ago
Joined: 01/22/2017 - 13:41
Posts: 1555
Location: United States

slowtechstef wrote:

Once the C01 is running, the LED just keeps converting electrons in photons with much lower voltages (down to an OCV of 0.2-0.3 Volt), although the output is just much less bright (“moonlight mode”). This means that once you turn off your C01 and the cell voltage has decreased below 0.8V or so, the C01 will not light up again. However, with alkaline cells if you let the cells rest, the voltage of the cells will slowly rise up again. With alkaline cells you can even see this happening when measuring with a DMM. So, wait and after a while you can then turn on your C01 again. No need to keep it on continuously. The same is also true for lithium primaries to some extend, although it takes much more time for the cells to rise up in voltage again.

I guess I should have searched for this before doing my own testing, but here it is. I put a 1.5 ish Volt alkileak cell in a C01 (neutral white output) yesterday. When I got home today, it was much dimmer. After taking the cell out, I measured 0.55V. A bit later I created a setup to measure the voltage and current out of the cell into my C01 with gravity, some props and a bit of tape. After running with this measurement setup for over an hour, the light seems to have stabilized (for now) by drawing about 6.5mA from the cell. The cell voltage is down around 0.3V. When my DVM measuring voltage shuts off the display, the light from the C01 flickers as the lead going to my DVM measuring current touches it, so it slightly disturbs the setup. After one such event the voltage of the cell is up to 0.39V and stable, with still 6.6mA of current. I’ll let it run overnight to see if its still running tomorrow. It been almost 2 hours since I started the test back up, with the cell at 1.0V or less the whole time. Certainly a vampire light if I’ve seen one.

Update 1:
good morning. 9h40m since I started this run, my 5000K C01 is still putting light out. 0.24V on the cell, 4.5mA being delivered, and the brightness is about the same, (slightly brighter) than moonlight on my Manker E01. I never imagined it would run all my sleeping hours on a cell down to 0.4V already.

Update 2:
Nighttime: 25h since the CO1 drained this cell below 0.6V, and started it on again. Still at 5mA level, I have seen the voltage as low as 0.24V, but typically its at 0.35V. Right now its at 0.4V and 5mA. How many more days like this? The light output is brighter than my Manker E01 on moonlight mode, maybe 3-4x lumens. Noticeably brighter.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

Backpacker Light
Offline
Last seen: 2 weeks 10 hours ago
Joined: 01/30/2013 - 20:15
Posts: 441
Location: Rochester, NY USA

sbslider wrote:
Certainly a vampire light if I’ve seen one.

Update 1:
good morning. 9h40m since I started this run, my 5000K C01 is still putting light out. 0.24V on the cell, 4.5mA being delivered, and the brightness is about the same, (slightly brighter) than moonlight on my Manker E01. I never imagined it would run all my sleeping hours on a cell down to 0.4V already.

Update 2:
Nighttime: 25h since the CO1 drained this cell below 0.6V, and started it on again. Still at 5mA level, I have seen the voltage as low as 0.24V, but typically its at 0.35V. Right now its at 0.4V and 5mA. How many more days like this? The light output is brighter than my Manker E01 on moonlight mode, maybe 3-4x lumens. Noticeably brighter.

Amazing.
Thanks for reviving thread with this interesting data. I always run Eneloops/Duraloops in my lights, which is not recommended for this experiment. It could damage the battery.

But I need to find some dead low voltage alkalines laying around the house (that I am ready to throw away) and try this in one of my C01’s.

This is great to know during a power outage that I can use any old dead battery laying around and still have some useful light! Think of how many alkalines we throw away when they decline to about only 1.0 volts!

Vampire!

The lighter the brighter the better.

Henk4U2
Henk4U2's picture
Offline
Last seen: 1 hour 4 min ago
Joined: 02/13/2014 - 17:52
Posts: 3283
Location: The heart of the Netherlands (GMT+1)

But first try to sort out the almost-dead batteries from the really-really-dead batteries.
Just in case your family has to survive whatever disaster that’s waiting for you in the pitch dark.

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

sbslider
sbslider's picture
Offline
Last seen: 2 weeks 6 hours ago
Joined: 01/22/2017 - 13:41
Posts: 1555
Location: United States

It just keeps going, it was still running this morning, 34 hours into this test, which started with a depleted battery. As I mentioned, my setup is a bit rickety, and this morning one of the leads moved a tad and the light went out. Eventually I realized this and tweaked it back into position. It came on and after a few seconds the battery was at 0.75V and delivering 14mA to the light, so presently it fairly bright. And the test keeps going . . .

I was hoping I would see where the light turned back on (if it would on its own). Maybe sometime later during the test.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

sbslider
sbslider's picture
Offline
Last seen: 2 weeks 6 hours ago
Joined: 01/22/2017 - 13:41
Posts: 1555
Location: United States


48 hour update. After the bumbling in my last post, I decided to just put the battery in the light and let it run. It seems like the cell continued to deliver about 5mA at whatever voltage it is. The pic above shows my Thrunite Ti-3 on the left, Sofirn C01 in the middle, and Manker E01 on the right. 48 hours after the battery was spent, the C01 is still brighter than my Manker E01, but not as bright as my Ti-3.

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

Backpacker Light
Offline
Last seen: 2 weeks 10 hours ago
Joined: 01/30/2013 - 20:15
Posts: 441
Location: Rochester, NY USA

Thanks for posting this. We are on the edge of our seats…..

I know people will laugh at this low level of light, but it is actually plenty to navigate around a dark house without falling or bumping a toe, and has the even more important advantage of not waking a sleeping spouse or baby.

The lighter the brighter the better.

sbslider
sbslider's picture
Offline
Last seen: 2 weeks 6 hours ago
Joined: 01/22/2017 - 13:41
Posts: 1555
Location: United States

R.I.P. It was still lit when I went to bed, 74 hours, albeit close to the output of the manner e01. Just to clarify, the LED is producting light still, but you can barely see the illumination looking at the LED in a dark room. Its no longer useful. But it would be interesting to see what level of current (and voltage from the cell). I’m away from home, so another day.

Glad some folks are interested, it’s sort of fun to see the realm of possible

PocketSammich wrote: I don’t need this, but I want it. Please sign me up.

MascaratumB
MascaratumB's picture
Online
Last seen: 11 min 34 sec ago
Joined: 10/29/2016 - 12:12
Posts: 4698
Location: Portugal

Thanks for your tests sbslider ! I wanna do something alike with some of my lights but I still didn’t have the patience and time! But this is quite nice data Wink
Thanks again Beer

[REVIEWS] ACEBEAM: H20 / TK16 /// AMUTORCH: S3 / S3 vs 219c / AM30 / AX1 / VG10 /// BLITZWOLF: BW-ET1 /// BRINYTE: T28 /// DQG: AA Slim Ti /// FIREFLIES: ROT66 GEN II /// HC-LIGHTS: SS AAA /// KLARUS: XT1C /// LIVARNOLUX: 314791 /// LUMINTOP: Tool AA V2.0 + Tool 25 /// NITEFOX: UT20 / ES10K / K3 /// ODEPRO: KL52 / B108 /// OLIGHT: M2R Warrior /// ON THE ROAD: M1 / i3 / M3 Pro /// ROVYVON: A2 + A5R / E300S / A8 /// SKILHUNT: M150 /// SOFIRN: SF14 + SP10A / SP32A / SP10B /// WUBEN: TO10R / E05 / T70 / E10 / TO50R / E19 /// XTAR: PB2 Charger ///

Tricks: 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 /// TIR Lenses: 1 / 2/// Others: Biscotti 3 + 1*7135 / Triple TIR w/ XP-G2 ///// My Collection ///// My Review's Blog (PT)

OL Contest 2019

GIVEAWAY: 1 / 2

blind-eye
Offline
Last seen: 1 month 2 weeks ago
Joined: 05/27/2019 - 00:32
Posts: 125

Any chance of a new batch this year using the new led source? Question

iamlucky13
Offline
Last seen: 4 hours 15 min ago
Joined: 06/22/2018 - 09:18
Posts: 697
Location: USA
blind-eye wrote:
Any chance of a new batch this year using the new led source? Question

It sounds like there is a good chance of it, but it is not confirmed yet:
http://budgetlightforum.com/comment/1606006#comment-1606006

Pages