[Available again! - BLF special edition light] new Sofirn AAA twisty high CRI 5mm LED

Who has the skills to disassemble it to see if the potting material harden (like Sofirn said) or will it still be gooey?

Ha. I still have a bunch of Arc AAAs, “snow white” — in regular use on keychains, and several on the shelf with different color LEDs —aqua, red, blue. Never did get a red-orange.

I’d love to know if these are indeed as tough as the E01.

Have four coming my way.

Let’s not get too far ahead of ourselves just yet. There’s only a couple of these in that have been in the hands of forum members so far, the E01 and Arc didn’t gain their fame over night with just a few lights tested. A nice LED won’t save this light if QC doesn’t measure up or if the tested samples were hand selected.

About 5 hours later price changed from 17.76$ to 13.00$. Paid.

My thoughts exactly.

Thank you for testing, at least short term there will be no damage. Not sure about long term, I guess I will see. I mean the driver will briefly see the higher voltage but like I did say the voltage drops under load. I just figured it wouldn’t hurt to ask.

Obviously lithium primary will kick alkaleak out of the water at high loads. Not so much at really low loads.
Though even at low loads the lithium primary will still be measurably ahead, up to around 40-45mA load, below that the difference will be so low it’s not worth mentioning.
At 100mA constant current it has 15% more capacity and 30% more energy. (Yes, I know 100mA is 1.6x 60mA)
So…zooming in on the datasheet, Energizer claims that at 60mA CC load (to 0.8V) their lithium primary does 12.6% better (1242mAh) than alkaleak (1103mAh). Sounds about right to me.
But I’d focus on the energy part. Especially after you consider…

…that this 60mA current draw you measure is only at full voltage with fresh cells?
The lithium primary will hold the voltage higher for longer. “Area under the curve” rules in my mind. Lithium primary wipes alkaleak off the table in that regard.
I will leave these links for reference:
I don’t know what is the absolute best alkaleak AAA but let’s just take Fujitsu Premium as an example. It sounds good and I did browse through a bunch of them and it’s curve looked nice at 100mA.
https://lygte-info.dk/review/batteries2012/Fujitsu%20Premium%20AAA%20UK.html
And here’s Energizer Ultimate Lithium
https://lygte-info.dk/review/batteries2012/Energizer%20Ultimate%20Lithium%20AAA%20UK.html
If some people don’t care to look behind the links for discharge graphs the main point would be that at 100mA CC load that particular alkaline drops below 1.4V/1.3V after 1h/3h while for Energizer Ultimate Lithium primary it is 8h/12h respectively.

Now because lithium primary holds voltage higher for longer my brain says that it means that with lithium primary the C01 will stay in regulation for quite a bit longer than it would stay with an alkaleak.
Because when the alkaleak voltage drops > boost circuit draws more current > alkaleak voltage drops and so on and so on.

That is, alkaleak will leave regulation and drop intensity sooner than it would with lithium primary.
This would also mean that when lithium primary leaves regulation it would be after really big chunk of the energy has been extracted.

What will the runtime with output lm look like? I seriously don’t know and I don’t have the equipment to test it.
I expect the runtimes to be similar. Maybe lithium will be slightly ahead. Whether it’s on par or slightly ahead or quite a bit ahead I fully expect that it will have a much longer regulated runtime and that would be more important to me.


Since you mentioned NiMH, I hope no one intends to use NiMH with the C01. I imagine the lower nominal voltage won’t be good for regulation time and if you forget to recharge it…
Yes I know the environment and such. To each their own.


I would be ready to send some euros through Paypal to someone who has the equipment and who is willing to do the runtime test with output lm logging between high quality alkaline and Energizer Ultimate Lithium.

If signing up for the interest list means Sofirn is more likely to make more of these, then I’ll take two 5600k and a 3200k

Read post 1:

You can buy the lights from AliExpress,the list was to express interest on the flashlight, I’m not sure Sofirn will do more lights now, besides the 2000 above mentioned!

Thank you for the update Tally-ho!! I just happened to see your post minutes after you posted it & went straight to AE & placed my order for 9 of the 12 I asked for. (Saving the other three in case they really do make the Red & Blue models. :wink: )

I was not sure I had ordered correctly, but much to my surprise the price changed to $6.50 each a few hours later & I paid. :+1:

Thanks again for the ‘heads up’ Tally-ho & thanks to Sofirn also. :beer:
…………

Format is:
Qty 3200K; Qty 5600K – Username (post#)

  • 3; 2 – litenutz (277, 528)
  • 4; 8 – teacher (278, 677, 937) // [purchased 3; 6]
  • 3; 3 – sma (280)

I realize it’s still only an interest list, but I was hoping the favorable response from the community would mean Sofirn would make more of these. Even if the Yuji LEDs are unavailable, a not-completely horrible 5mm LED would still be palatable in such an otherwise great light. Admittedly I know nothing about manufacturing and business management in China, but I would have thought the math for Sofirn would work out to “making/selling more of these” == “good idea.” Oh well. Sofirn has been a very cooperative company with the BLF community; if they don’t continue manufacturing the C01, I can respect their decision.

Can I make an impassioned plea to change the title from tint to color temperature? 3200k and 5600k are color temperatures NOT tints. Tint describes something different.

That being said, I cannot wait for mine :smiley:

12 hours later… sold out again? this seriously sucks.

is it possible to set a pre-order for when it is back in stock somehow?

I think that the release of this new Sofirn light in this busy sale period is seriously affecting production capability. And I remember Barry telling me last month that for the 11-11 sale Sofirn had to produce old models and that it was holding up the production of new models. This is very chinese: they give priority to products that they have an idea of how well they sell over new models that have not proven themselves yet, however promising they seem. This is still true while Sofirn is way less conservative than other chinese budget flashlight manufacturers.

ok… but something is weird… I always get to the dutch ali express when I click on the link in post#1. When I set the page back to english there is no way to find the product on aliexpress with the search bar. are out of stock items not searchable?

also it still says 151 orders. so if there was a second batch available yesterday evening, why are the new orders not shown?

As soon as the C01 was out of stock, I could also only get the page via the link in this thread. Maybe their new stock was not ready after all and just the old page (that they did not link anymore via the Sofirn store) became active again for some reason.

If someone can change the OP link to this one it's the "general" shop instead of NL one

That “someone” is only slowtechstef. He’s around a bit more often now so the OP is updated more regularly too. :slight_smile:

This link in the first message goes straight to sofirn’s store on the global Ali in english :

Tally-ho, thanks for the help and heads up when these became available

fwiw, that link gave me a German version of the page, until I deleted my history (others call that clearing the cache).

The link now loads a page correctly, for me, in English…

Hello, i would like 2 Qty of the 3200K, and 2 Qty of the 5600K. THANKS !

One of mine is ordered (wouldn’t let me order two for some reason) and I briefly chatted with the Sofirn person, asking when the blue and red were ready. They said ten days. Hope this helps.