pkcell 14500. surprise! rated 750mah got 844@500ma

esr meter

Nice find!

Made a search looking for a seller with free shipping to where I live. Result summary for anyone interested: “14500” search in DURNERGY store

10440 #1
366mah@200ma

the wrapping is not cheap.if the effort to trim the bottom overlap on the 10440 is any indication they will hold up just fine.

Well, just looking at HKJ's discharge graphs and crunching a few numbers my cold cell internal resistance estimation for the Sanyo UR14500P is almost 190mΩ.

Before HKJ reviewed the TrustFire IMR14500 (red-gold) I had already cooked a homemade internal resistance estimation for it, which came out at 80 & 82mΩ for the couple cells I had lying around at the time. Cold cell values, remember. Done by measuring cell resting voltage before and after applying charging current to it, averaging this value, and measuring cell voltage while charging current was being applied (at middle charging time lapse).

Also did that to six LiitoKala INR26650-50A cells, attaining nearly 23mΩ on average.

I'm not holding my breath with regards to discharge performance for these PKCELL cells.

Yes, nice find !

I have been searching for some good budged 14500 for some days now. So I will give them a try.

@Barkuti
Found the store as well with free shipping to Germany … ordered one lot. :+1:

Barkuti dont hold your breath.
they fall on their face at 2a.
still beats the sanyo at 1a
they are rated at 1.5c max continuous.
remember these are icr.
and my sample of 1 sanyo droops even worse than these at 2a.
so its a cheap cell that still beats the sanyo at 1a

So much more than Efest which is 308mah@200ma or 281mah@2A according to HKJ and 276mah@2A according to accudb.
I wonder what are the discharge curves…

The PK cells look to be unprotected ICR, where the Efest are IMR? That would account for the greater capacity.

I need more 14500, but I want either protected ICR or IMR chemistry.

this is where things get muddy.
pkcell is an oem.
efest a relabler.
who has been caught in lies before.
pkcell calls this cell icr.
it and the efest tested within 10mah under the same conditions.
physically the efest and pkcell are identical.the ir is identical.
who is lying?
guess.
at the price point of these i know which i would buy.
dont need to pay a middleman to slap a fancy sticker on it and charge more.

thx for info… still happy with your pkcell batteries ??

Not yet … still waiting for delivery. :rage:

Has anyone here tried their luck with those PK RCR16340 cells I’m tempted to grab a few…

Tempted as well, but I will wait for those 14500 first.

Has anybody ordered Pkcell 16340 ?

my 10440 and 14500 are fine.
need someone with test gear to test the others.
or some to find their way here.

Got 4 X of their 18350 900mah. I’ll discharge test two and report back.
I’ll do some ceiling bounce test with a cheap lux meter against Keeppower 18350 too. Haven’t got the Aspires yet

if i had something to use them in i would have gotten some.
looks promising if they are anything like the 14500.

got these in my watch list pending reviews from you guys :slight_smile:

Subscribed :wink:

Discharge four 18350 at 0.5a. Got 888, 892, 893 and 909mah.

Also did a ceiling bounce test with a cheap UNI-T luxmeter and Emisar D4 XPL. Pkcell got 240 and Keeppower got 284.
I got four Pkcell for $10aud. So they are a bargain. The same seller on ebay even sells 12 for $23aud.