Trustfire Flames "3000"mAh discharge

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joerch
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Trustfire Flames "3000"mAh discharge

Just played with my new Graupner Ultramat 25 hobbycharger and discharged a Trustfire 3000 flame full loaded at 4,20V down to 3,0V at 2,8A (as that is what I use them for, 8x 7135) and got 2445mAh as a result, would have been more down to 2,8V or even 2,5V but that is shortening the lifespan of the battery. Open circuit voltage was 3,42V after discharge.

Sure it is not 3000mAh but seeing the high discharge current and the high end-voltage I think it is quite a good result, I will order some more Smile

Buwuve
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Could you please run a discharged test with 3,5A?

I ordered this batteries 14 days ago and hope they will work fine with 3,5A.

Light up the darkness.

joerch
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I can do this tomorrow, I guess the result is about 2200-2300mAh.

Buwuve
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This is great, thank you.

Light up the darkness.

pounder
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seem to be about the same as flames..I got a set of these in the mail to try em out..for the extra buck I decided to give em a shot..if they're only 2400 mah then they're the same capacity as the flames..i'll save the buck next time lol

joerch
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Well, if you look here http://lygte-info.dk/info/Batteries18650-2011%20UK.html ,

the 2400mAh flames are about 2150mAh @2A discharge,

your decision what to buy....

pounder
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well if you look at this test they're 2400a or so discharge at 3a..I always remember seeing them perform at 2400a in tests at CPF and other sites..

http://www.bestatomizers.com/mod-batteries-and-chargers/trustfire-flame-18650-2400-mah-and-14500-900-mah-performance/

2100
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Nice....

But then pay $2 more and you get near faultless PCB protection (definitely cuts at 5A without fail, also LV cut off is precise and triggers easily) and Sanyo heart from the XTAR 2600....   But then got the urge to buy one pair to try though....  Big Smile

joerch
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I do not trust any results I have not falsified myself Smile

2100
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joerch wrote:

I do not trust any results I have not falsified myself Smile

That reminds me, is the offer over yet?!  I might want to get another 4 pairs, too many flashlights!  (DRY is coming)

BTW, there are more tests and XTAR 2600s floating in this forum than you can imagine. It is a very well tested cell.

Another thing, it is a well matched cell. 6 of them used in my DRY triple XM-Ls (and also another 3 Sanyo 2600 unpro) and discharging low 4A plus regularly.

joerch
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I can not see the end voltage of those tests, if I would have discharged down to 2,7V or 2,5V I would have got a higher result but shortening the lifespan of the battery.

2100
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I do discharge till 2.6V, but my Uni-T UT58E shows about 0.1V higher.  heh.... stupid IMAX B6 imprecise resistors.  But it charges and terminates ok and safely for my LiCo, Pb, NiMH AAs and Ds, just that i don't use the balance feature.

I think DasFriek quotes 3.0V termination figures.  Anyway a discharge graph is all "variable", no ending voltage needed, you choose your own termination voltage.  Smile

Seriously don't worry about shortening the lifespan of the cells by charging to 4.22V or overdischarging a little. We have too many cells (I think I am approaching 50).

joerch
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Overcharging is no matter to me as my chargers will cut off pretty precisely at 4,20V, discharging down to 3,0V is more useful to me as I will not use any battery on purpose (only in emergencies) to go much  lower than this,I rather charge them early.

This "test" is not about what the battery could perform but what it perfoms in my most common purpose.

2100
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Well if you are talking about real-world usage, the discharge plateau matters a lot more most of the time then. (yes i do charge up early as well, so the 2100/2900/3100mAh talk about NCR18650CH, NCR18650 and NCR18650A is pretty academic)  Unless if you are talking about 2 x 18650 current regulated lights.  The Sanyo 2600s has one of the flattest curves around for lower mid-end voltage in the curve upwards, a lot of area, sharp knee.  For single 18650 lights, all of them kick out of regulation somewhat early due to insufficient juice. (even the low LED Vf of a XM-L doesn't help, think it's a combination of the cell plus driver or something).....eg my Jetbeam RRT-2 XM-L.

But you are welcomed to contribute the 3000mAh Trustfire flames. For all we know, it could be pretty good, as long as you win in the battery lottery. (we need a larger sample base).

For the 2400mAh flames, they have a slightly higher internal resistance than the others, like NCR18650/NCR18650A/Solarforce 2400/XTAR 2400.  In current regulated lights, they always give you a slightly higher current reading than the others of course we try to do the same open circuit voltage for the cell.  Sag is more under load.  But nothing too serious of course.  I consistently get 43-45 min runtime for the Trustfire Flames 2400 on a Sky Ray SR3800 which takes 2 x 18650, compared to Solarforce 2400 it is 50 mins, XTAR is 53min and Sanyo NCR18650 2900 is 60 mins. (tests actually repeated 2-3X and underwater so that the temp is constant).  I get 2300mAh @ 1A discharge thereabouts (to 2.7V) for the TF Flames.

 

joerch
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I can not show any graphs of discharge or any comparing results, I just wanted to share my result I got playing with my new charger in terms suitable to my purposes (I guess they are not that uncommon).

Discharging below 3,0V shortens the lifespan of batteries as far as I know, no matter what, in real life I will not get this far.

All I wanted to show is these batteries are not that bad.

I have some 2400 flames too, they will go thru the same test.

joerch
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Sorry, just saw that the max. discharge current on my charger is 3A Sad

Budgeteer
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Emm, excuse me but what the heck is DRY. I'm familiar with all the flashlight acronyms but this DRY is still obscure to me.

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

Stephen Wallace
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It's a popular budget triple 18650, triple XM-L flashlight: -

http://www.sbflashlights.com/-Dry-3x-Cree-XML-Flashlight-2500-lumens-p133.html

Hikelite
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It's that flashlight that is being discussed everyday here on BLF.

http://cnqualitygoods.com/goods.php?id=1177

Ventsi
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Hi Joerch, could you please put them to a discharge test of 1A? There are a lot of tests on 1A and I think this is the best way to compare them to the others. Thanks Smile

joerch
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@Ventsi: test started

Ventsi
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Cool. I just ordered a pair from Manafont based on your previously posted data. Probably close to the stated capacity under 1A, let's see.

The old Flames 2400 have 2250 mAh under 1A, according to this test: http://lygte-info.dk/info/Batteries18650-2011%20UK.html

joerch
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Just finished and got 2494mAh @1A when discharging down to 3,0V, would have been more when discharging to lower voltage but I do not like that. This cell has been charged and discharged about 5 or 6 times before.

Ventsi
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Thanks again, you should put your data on the BLF Battery Data Base thread Smile

So it seems the 3000 flames have about 10-12% higher capacity than the 2400 flames, which is ok I guess.

CheapThrills
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Got today, 1 pair from Manafont.

1st: 2502mAh @1A -> 2,7V.

2nd: 2496mAh @1A -> 2,7V.

ChibiM
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Looks promising , except for the big difference in capacity !
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ChibiM wrote:
Looks promising , except for the big difference in capacity !

 

IMO 2%+ difference is not that bad comparing to ones I got from Dino...

They had more like 25% difference............

scdaf
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your figures reflect ~ 20% difference.  Typo?

CheapThrills
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scdaf wrote:

your figures reflect ~ 20% difference.  Typo?

 

Oh my, not only a typo but I also misread my own typing Big Smile

Sorry, edited now.

Less than 2% of difference...

CheapThrills
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I might add a note about the ability to put out large amounts of current.

I have one pair of supposedly Panasonic NCR18650 2900mAh, with UF-980L they give 3,86A.

 

These Trustfires give 4,06A.

For reference, all my previous TF 2400 "Flames", even UN-Protected ones give less with same DMM and same setup.

Up to date, NCR18650 has been my powerhouse in terms of max amps. Seems like not anymore, interesting!

jonhobart
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Posted in the sticky on the 2400 mah TF Flames above before seeing this thread.  Thanks for the tests.  Seems to agree with the tests others have run on these.  I don't see it as a negative that they have a higher percentage less capacity as indicated, than the "2400 mah" Flames, as long as they have a higher capacity than "2400 mah" Flames.  If these results are typical, then I believe that despite their being $1/pair more they are a good buy.  So far (1 week) I am happy with mine, but I have no way of testing them to see what their capacities are. 

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