Thorfire 5000 mah 26650 cells

Anybody tried these cells in Convoy L6? If they are 67.5mm they should be ok but the Amazon US page it warns that they are longer than other cells.

My Thorfire 26650”s are definitely 66.6mm long, I have just remeasured them.
I do not have an L6 so can”t comment if they will fit but power wise they should be fine for the L6 as I am running them in an S70 which has very similar power needs to the L6.

If they are 66.6 mm long then you have UNprotected bare 26650 cells. No protection.

I haven”t tested whether they are protected but Thorfire confirmed via email that they definitely were & they don”t seem like the sort of company that lies.
Even so I am running them in a light that has visible battery status via an illuminated switch that changes colour (green, orange, red) has low voltage warning & low voltage cut off so personally am not worried if they are unprotected.
All my other 26650”s are unprotected anyway.

They’ve already lied that they manufacture cells - they don’t - it is cell made in Taiwan and not by Thorfire.
Protected cells are much longer you can compare them.
5000mAh bare cell is longer then smaller capacity cells even without protection.

Quick check for brave guys :
Piece of wire
Short the cell for 1 sec
See if DMM reads zero volts after you shorted your cell(that means that protection kicked in and circuit is open)
With protection cell will not have time to heat up so no risk of some damages.
If it reads zero volts place it in your charger it should have “soft” start, and circuit will close again. All good.

Chinese telling the truth :slight_smile:

are you saying you got them for about $5 each? the thorfires on amazon are about $9.50 each… how did you get them for 5?

I am not arguing with you & am only stating what Thorfire advertise & backed up by email when I specifically asked them about the cell.
I did mention in a previous post that I was surprised how short the cell was considering it was claimed to be protected.
However the cells tested well against my Keeppower, Basen & Liitokala 26650”s (all unprotected) on my analysing charger in terms of capacity & IR & perform fine in the flash light (which has lots of protection/warnings built in) so I am really not concerned.

Thorfire had a 1 day sale on Amazon UK.
If you bought one of their 18650 motion sensing head lamps you could buy any pair of their 14500, 18650 or 26650 cells half price, that is how I got them so cheap.

From the picture in the forth post it appears your batteries have a protection circuit board on the positive end of the battery.

So these likely aren’t really protected cells are they?

I use these thorfire cells in my s70 and plan on using them in the l6 when it lands this week. Haven’t had any issues with them and honestly I’ll probably by more of them next time im shopping on Amazon. Takes awhile to charge back up but I’m using xtar vc2. But I’d rather slow charge my cells and get more useful life. I have another set to switch them out with and like 16 18650s. The lg hg2 work well in the s70 but with 3000 mah it goes in turbo. Panasonic 18650b is a really bad fit light ran but had to keep adjusting tailcap hg2, and 30q had no problems

I can vouch for these batteries, using them in my L6 right now with no problems. Tested capacity at 5148 and 5276 @ 4.21v. Better than my AWT 26650 “4500mah”, i tested these at around 3700 to 3800mah @ 4.21v (I think there are same as efest re wraps). I like these Thorfire guys, they warrantied a light I bought of Amazon after the 30day period (it was actually 3 months after I bought it) and it came from a West coast warehouse in 4 days. They asked me to do a amazon review, I refused but still got the light!

I have received 2 examples of Thorfire 26650 5000mAh for testing from a member of German TLF.

I will post discharge curves for 1/3/5/7/10A (maybe 15A too) this weeekend.

But I can say one thing for sure already: they are NOT PROTECTED

I discharged them with up to 30A (my equipment’s limit). The cell voltage at this current rapidly goes below 2,0V, but the battery does not switch off.
Apparently there is neither any overcurrent nor any undervoltage cutoff.
There is also no visible sign of a protection circuit on the negative or positive pole.

So no matter what “Thorfire” writes on the wrapper: these are unprotected cells! IMHO this puts them in line with other infamous “brands” doing the same thing.
But at least the capacity rating is not inflated.
And the 10A rating is also ok.

Is there anyone else out there , with any type of knowledge whether or not these

Thorfire 26650 (5000mAh) batteries are protected or not-protected as factory claimed ?

Please help us find out , what the truth is.

I’ve been using these in my L6 and… I assumed they were protected. I guess that light has a good low voltage cut off.

The truth is: they are unprotected, as many have suspected already because the batteries are too short to carry a PCB.
And they can’t stand more than 10 amps, show very rapid voltage decay at 15 amps, probably a PTC kicking in (so it wouldn’t be totally unprotected).

This confusion may be why flashlight manufacturers are beginning to use proprietary batteries in high output flashlights as a hedge against product liability.

We need certain amount of regulation to restrict misinformation being used in product advertising and promotion.

Damn, i just ordered a coupple of these…I’ll have to return them then if this is true, I do not want unprotected batteries…
I guess it was too good to be true.

LW , I hope you’re not thinking that I was implying that you don’t know what you are saying. Not the case at all !
I’m just looking for more verifications to the cells being not protected as they are advertised !—This meaning the
second , third and so on , other opinions about the veracity of their stated protection.

“ThorFire 5000mah 3.7V 26650 Battery Protected Rechargeable Li-ion Battery for Flashlight (Pack of 2) by Thorfire”

Amazon.com U.S.

Under specifications there is no mention of being ‘protected’.