Best deal for a dozen or so of good quality 18650s - INTERNATIONALLY

Capacity 1980maH to 3,0V (@ 1A) (I set discharge to 2,8V so it still lasts)

Not bad regarding capacity, but I expected to get very littly voltage sag like on that diagram I liked.

Now I dont know in what to doubt: cells, my equipment or my understanding of it all :slight_smile:

But, I used that hobby charger lot of times and these results are not very dissimilar with results I get with good Trustfire flames (2400mAh)

I wonder did anybody else, with better equipment, ordered them recently…

You can find them in my battery comperator.

FInished discharging - first cycle - 2293 up to 2,80V

Thanx HKJ (btw, can you out time on ghorizontal axis maybe?)

(Illpost comparison diagram later I dont have time now)

But thats precisely source of my doubting.
Himax cell Im testing right now gives resultrs as trustfire flames 2400mAh cell, not Himax - especially regarding voltage drop…

Maybe some other cell from the package will perform better, but if they are oscillating so much from cell to cell - thats not acceptable…
Im not prone to pay more just for the label or just few mAh higher capacity

I was waiting for this!!!
My 80th post:-)

I will post the full review later today, this includes also charts with a time axis and all HI-MAX curves in the same chart (Like all my other battery reviews).

On what voltage is undervoltage protection of these cells?
žI just continued discharge of this same cell, put end voltage at 2,50V, so Ill see, fif anything happens.

I still didnt had any cell, as far as I know, with working undervoltage protection - and im ordering good, high capacity Trustfire flames.

It delivered 99 more mAh to 2,50V. (from 2,80 to 2,50V)
Im not aware of undervoltage protection kicking in… (but I didnt watched the charger whole time - if that matters…)

Can somebody help me understand this - I asked this questiuon on several other topics, still struggling with answer.

The under voltage protection is somewhere between 2.0 and 3.0 volt, you order the protection chip for the specific voltage you need. That is the theory, but for the number of chips used here, the manufacturer only have a few fixed voltages to select between.

The review is posted now.

From where are you ordering them? :slight_smile:

I already said, Pingyi seller from ebay… http://www.ebay.com/itm/12pcs-18650-2600mAh-Protected-Li-ion-Battery-3-7V-/220944817348?pt=US_Rechargeable_Batteries&hash=item3371565cc4

Hmm… I guess I got it wrong, I meant Trustfire flames, it is ok though.

Im ordering them from kaidomain.
But still didnt found any cell with undervoltage protectiion : (and I dont want to discharg/torment them all to 2,0V just to see weather undervoltage protection is on 2,2 or something like that)

Thanks.

Second cell measured 2113mAh to 2,80V…

Im testing third cell.
COnsistently, these cedlls are nothing better than trustfire flames Im getting from kaidomain. Maybe even worse in some aspects.

Ecig, do you think these could be fakes?

No I dont think thats it. I just think that it happened what over time often happens with originally good quality products - quality drops. Unfortunately for us.

Although its little suspicious that there is nowhere “Himax” mentioned in seller’s listing, so listing cant be find if searching for “himax”.

PS: But its still a puzzle for me how HKJ gained somewhat better results than me… I dont know.
But my results couldnt be so wrong. I have Trustfire flames as reference (tested on same equipment), even if results are slightly off, they are pretty the same as results for trustfire flames.

Oh dear, I just got a batch of 12 too, better test them now.

Oh rats, I think Himax is unbuyable now. Testing first cell, discharging @ 2.5A. 0.6Ah into the test and the cell voltage is already 3.33V.