Help me identify these 18650 cells

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ledoman
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What would then be "UR18650FM R11 22" for Sanyo. Anyone can decript  "R11 22"?

Those are data I've got from Hank for http://www.intl-outdoor.com/sanyo-18650-2600mah-liion-battery-p-135.html.

nekdo12
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ledoman wrote:

What would then be "UR18650FM R11 22" for Sanyo. Anyone can decript  "R11 22"?

Those are data I've got from Hank for http://www.intl-outdoor.com/sanyo-18650-2600mah-liion-battery-p-135.html.

Same question.

arztt
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mh i dont know what r1122 means. but its not the manufacturing code, because you see r1122 on very much newer batteries from sanyo. and on those newer batteries there isnt any manufacturing code anymore. the only thing i could find, is:

http://www.img-host.de/bild.php/70302,sanyoDEJWR.jpg

ledoman
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Thank you arztt. I've got reply from Hank. He told me there is also "P23C" on it. So it is 23th week of 2011.

arztt
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ledoman wrote:

Thank you arztt. I've got reply from Hank. He told me there is also "P23C" on it. So it is 23th week of 2011.

ah ok, good to know. on the sanyos with r1122 i know, there wasnt any production code

nekdo12
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arztt wrote:

ledoman wrote:

Thank you arztt. I've got reply from Hank. He told me there is also "P23C" on it. So it is 23th week of 2011.

ah ok, good to know. on the sanyos with r1122 i know, there wasnt any production code

Yes, it is. But is hard to see.

P48A

marcl
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Sorry to bring up this old thread.  But are you guys saying that they don't have UR18650FM stamped on them anymore?  I ask because I have just received mine from kaidomain and they just say SANYO R1122.

Marc.

Eagles may soar, but weasels don't get sucked into jet engines!

attitude
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hi i just crack this http://www.ebay.com.au/itm/221094393186?ssPageName=STRK:MEWNX:IT&_trksid... open and found. this…. can you help identify ?
http://s18.postimage.org/t1e1dwpg9/IMG_0967.jpg
5200mAh & 7800mAh replacement HP Compaq Business Notebook 6730B batteries are made with high quality cells from SANYO
i feel like these are LG cells anyone confirm ?

weird i just get addicted to flashlight like in a blink of an eye.

crystalcai
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I think it’s hard to find the exact capacity of the battery .And many times even you buy a battery which told you with 3000mAh ,actually it may only have 2500 mAh ,some even may be 1000mAh .You can just compare this battery with a standard battery.For example ,you have one standard 2000mAh battery ,you can try to charge that with the same charger.Just see the time which takes for the two battery to be full .And then you can use them in the same flashlights to see the runtime for each battery. This is just my method,you can have a try Wink

Keep going ,next stop—>LightsCastle
Web: www.lightscastle.com
Email: service@lightscastle.com or marketing@lightscastle.com
Official Skype:lightscastle

attitude
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is there a website which can find out what battery it is if u type in some codes off the battery ? i heard google does that but cant find any info on these ones.

weird i just get addicted to flashlight like in a blink of an eye.

33696933
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I think they are chinese cells because the listing looks like its for a generic chinese laptop barttery and have a barcode thing on it.

Aldrevopa
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I will revive this topic as some very good info about identifying 18650’s was posted for Sanyo and Sony. I just opened 3 HP laptop battery packs and found one with Sony’s (all 6 constant at 3.84V) and two with Samsung ICR 18650 24B (huge difference for all 12, had to scrap 6 of them which were below 2.5V). As I already identified the Sony production date, I was curious if anybody knows about the Samsung codification – on my batteries there is SDI 544.
Any help is highly appreciated.

comfychair
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I have some mystery cells, too.

http://i45.tinypic.com/4griac.jpg

One on top is easy, LG 2200mAh. Got 12 of those from a very lightly used pack, work good.

The red one: printed FDMPT2 & a serial number, and either an A or B printed on the other side. Printing is on the cell body with transparent heatshrink, white insulator ring. I got a TON of those from old IBM packs, supposedly they were 'manufacturer reconditioned', but all cells were D-E-A-D when pulled... and revived when stuck in a cheapie 2-bay charger with a good cell, and then took a charge normally, and hold good voltage after and work just OK when load tested, but nothing spectacular.

And the bottom one... HOLY COW. I don't have a clue what it is, but they are monsters. Came from a virtually new aftermarket replacement pack, but it was only a 6-cell. ;[

I don't have a hobby charger or anything to properly check capacity, so here's what I did... all cells fully charged, stuck in a generic 501b/XM-L T6. Checked start voltage, tailcap amps on HI, tailcap amps on LO. Ran each one 70 minutes on LO, and rechecked volts & amps.

The red ones:

start: 4.21 volts, 2.70 amps HI, .51 amps LO.

end: 3.90 volts, 2.27 amps HI, .40 amps LO.

LG 2200mAh:

start: 4.22 volts, 3.81 amps HI, .60 amps LO.

end: 3.88 volts, 2.93 amps HI, .44 amps LO.

The mystery blue cells:

start: 4.22 volts, 4.34 amps HI (what?? lol), .64 amps LO.

end: 3.87 volts, 3.12 amps HI, .46 amps LO.

JML
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You guys are utterly crazy … and know what i count me in too Smile

This battery-pulling is highly infectious. I got an old laptop-battery from a Thinkpad and pulled it open.
The battery was good for about a minute or so in the laptop then it shut down.
I found 6 green cells (SF US18650GR T6A) in it that i just could identify (thanks to this thread) as Sony 2200mAh.

Now to the strange part
I measured them with my DMM and got 4.16V from every cells of the pack.
Hmm… No bad cell ??? I tested them in my EDC (1×18650 ~2.5A) for a few seconds and it worked well

I just learned that waiting a week or so and measuring them again would give me more info.
Is it possible to measure the internal resistance with an DMM?
As i understand a DMM aplies voltage through a measured part to determine resistance
so it should give odd values or am i wrong?

MO

dchomak
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You should be able to calculate the internal resistance for a cell as it discharges, it will probably increase as the cell is discharging. But at any given point it should be the delta V / delta I

(open circuit voltage minus under-load voltage then divide this difference by the load current)

JML
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Thanks dchomak

But i’m not shure if i understand.

Delta V —- i.e 4.2/3.8 = 1.10
Delta I —- load current 1A

1.1.0 / 1 = 1.1 Ohm ??? Can this be right ?

Mo

dchomak
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JML wrote:
Thanks dchomak

But i’m not shure if i understand.

Delta V —- i.e 4.2/3.8 = 1.10
Delta I —- load current 1A

1.1.0 / 1 = 1.1 Ohm ??? Can this be right ?

Mo

If the open circuit voltage is 4.2 and it drops to 3.8 while drawing 1 amp then the internal resistance would be 4.2 minus 3.8 which equals 0.4V. Divide 0.4V by 1 amp to get 0.4 Ohms internal resistance.

JML
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H)

Thanks – Now i get it

Mo

comfychair
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JML wrote:
You guys are utterly crazy ... and know what i count me in too Smile This battery-pulling is highly infectious.

Dang right it is - 12 LGs and 6 generic (but great) cells, for $6 shipped to my door. Seriously. Six dollars!

attitude
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I got a dell 7 cell pack genuine brand new for 17 dollars. works out to less then 2.45 each.

its green(almost Teal colour not same green as Panasonic) shrink wrap and i think its LG cell labeled as
LGDB118650
G0562602564
EB272D6B1

are they LG cells ?

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=110986706552#ht_50...

weird i just get addicted to flashlight like in a blink of an eye.

33696933
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yes

comfychair
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LGDB118650 = LG 1800mAh

The other numbers are lot numbers & serial numbers, the first line is usually the only one useful for ID.

A good one to look for is the big fat OEM battery pack for HP DV4, got 12 LG 2200mAh inside.

Data_HU
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I found this, but I don’t understand

my Samsung cell

ICR18650-30A
Samsung SDI
2A55

44D7

J06A
55D21

Archie
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comfychair wrote:
LGDB118650 = LG 1800mAh

Why you think so? Smile

anduril
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Archie wrote:
comfychair wrote:
LGDB118650 = LG 1800mAh

Why you think so? Smile

Sorry for digging that up, but I’m almost sure this info is not correct.

I just broke apart my Dell XPS 6-cell pack containing these.
The parameters were 11.1V and 56Wh, which seems to be… 2500? 2600mAh?
The exact code is:

LGDB118650
G29422*****
EJ212D2B1

EDIT: Yup, 2600 – those are the same: http://budgetlightforum.com/node/13407

snakebite
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attitude wrote:
hi i just crack this http://www.ebay.com.au/itm/221094393186?ssPageName=STRK:MEWNX:IT&_trksid... open and found. this…. can you help identify ?
http://s18.postimage.org/t1e1dwpg9/IMG_0967.jpg
5200mAh & 7800mAh replacement HP Compaq Business Notebook 6730B batteries are made with high quality cells from SANYO
i feel like these are LG cells anyone confirm ?

bak china
2200 mah.
the ones i have do fine in a modded srk.
the avatar is a brick of 96 being charged 96p
Archie
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anduril wrote:
Sorry for digging that up, but I'm almost sure this info is not correct.

Of course, it isn't.

Quote:
I just broke apart my Dell XPS 6-cell pack containing these.
The parameters were 11.1V and 56Wh, which seems to be... 2500? 2600mAh?
The exact code is:

LGDB118650

LG Chem cells are identified by two-character code before "1865x" part, in this case it's B1: that is, ICR18650 B1 cell (nominal capacity 2600 mAh, minimum 2500).

Cheers,

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