Help me identify these 18650 cells

58 posts / 0 new
Last post

Pages

33696933
33696933's picture
Offline
Last seen: 5 years 53 min ago
Joined: 02/19/2011 - 01:27
Posts: 431
Location: Newburgh, NY
Help me identify these 18650 cells

I need help identifying capacity and brand of these cells. I got them from Lenovo battery packs but I didn't see anything that showed capcity.

The red ones are embossed with Sanyo UR18650FM M51A , and have a light blue insulator ring on top.
  

The other is green with "SE US18650GR T 8A123B23v"
18650 

and my other 18650 next to my recovered ones
18650 collection 

Edited by: 33696933 on 04/02/2011 - 16:10
Don
Don's picture
Offline
Last seen: 2 years 7 months ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

They are Sony cells.

2200mAh capacity.

http://www.centrix-intl.com/details.asp?productid=6052

They will very likely be well down on that capacity, laptops are outright cruel to their batteries.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

33696933
33696933's picture
Offline
Last seen: 5 years 53 min ago
Joined: 02/19/2011 - 01:27
Posts: 431
Location: Newburgh, NY

Thanks after looking at your link it looks like the 2 characters on the bottom line determines the version or something.  Sony 18650 8A brings me to links of 2600mah versions like http://evva.en.ecplaza.net/catalog.asp?DirectoryID=202839&CatalogID=1249436 . I still can't find anything on the Sanyos .

Don
Don's picture
Offline
Last seen: 2 years 7 months ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

The Sanyos - also very good cells but they will likely have had an extremely hard life

http://ancoo18650.en.made-in-china.com/product/wqImWhxEYlVH/China-UR1865...

 

The M51A bit, I've no idea about.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Piers
Offline
Last seen: 7 months 3 weeks ago
Joined: 01/18/2011 - 20:31
Posts: 896
Location: Bolton, UK

"Sanyo UR18650FM M51A"

This cell has a green card insulator around the top button isn't it?

UR18650FM  is Sanyo's main production 18650, it's 2600mah. Here's a mini datasheet - http://shop.battex.cz/pdf/1S1P-UR18650FM-K.pdf

All I can think is that the "M51A" part is a batch number or something like that.

I assume these are the cells that are in the new XTAR's 

33696933
33696933's picture
Offline
Last seen: 5 years 53 min ago
Joined: 02/19/2011 - 01:27
Posts: 431
Location: Newburgh, NY

Don: Could you please explain why laptops are cruel to batteries and why the had an extremely hard life? 
Pook: The Sanyo's have a light blue top.

I was going to use these in Battery packs with many in parallel in my HID and bike lights, do you think they would hold up?

and thanks for the help

Don
Don's picture
Offline
Last seen: 2 years 7 months ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

Laptops run hot. Their batteries get hot. Very hot. This is a Bad Thing.

They pull serious current out of the cells - I have an old Vaio laptop that wants 120W from the cells - which is cruel.

They get stored fully charged and hot - and their chargers tend to over charge the cells.

Heat is bad for cells, heavy current draw is bad for cells. They get stored with fully charged cells that rarely get a chance to spill some charge - how often do most users run them on battery?

Not how cells ought to get treated. My 3 year old work (And everything else) laptop can barely boot before the battery gives out. My 5 year old Vaio can't get through a boot before the cells die.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

fishinfool
fishinfool's picture
Offline
Last seen: 4 months 2 weeks ago
Joined: 03/09/2010 - 00:30
Posts: 4342
Location: Hilo, Hawaii

33696933 wrote:

I need help identifying capacity and brand of these cells. I got them from Lenovo battery packs but I didn't see anything that showed capcity.

The red ones are embossed with Sanyo UR18650FM M51A , and have a light blue insulator ring on top.
  

The other is green with "SE US18650GR T 8A123B23v"
18650 

and my other 18650 next to my recovered ones
18650 collection 

Wow!  That's a lot of li-ion batteries.

 

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

33696933
33696933's picture
Offline
Last seen: 5 years 53 min ago
Joined: 02/19/2011 - 01:27
Posts: 431
Location: Newburgh, NY

Yes , I love my li-ion cells , now all I need is to find a decent hobby charger to tend to them as the trustfire tr-001 aren't cutting it. 

Piers
Offline
Last seen: 7 months 3 weeks ago
Joined: 01/18/2011 - 20:31
Posts: 896
Location: Bolton, UK

fishinfool wrote:
Wow!  That's a lot of li-ion batteries. 

 

Indeed...It looks like you have competition:P

fishinfool
fishinfool's picture
Offline
Last seen: 4 months 2 weeks ago
Joined: 03/09/2010 - 00:30
Posts: 4342
Location: Hilo, Hawaii

Pook wrote:

fishinfool wrote:
Wow!  That's a lot of li-ion batteries. 

Indeed...It looks like you have competition:P

He's waaaaaay ahead of me when it comes to li-ion batteries.

 

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

fishinfool
fishinfool's picture
Offline
Last seen: 4 months 2 weeks ago
Joined: 03/09/2010 - 00:30
Posts: 4342
Location: Hilo, Hawaii

33696933 wrote:

Yes , I love my li-ion cells , now all I need is to find a decent hobby charger to tend to them as the trustfire tr-001 aren't cutting it. 

I think you'll need several chargers. Wink

 

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

Budgeteer
Budgeteer's picture
Offline
Last seen: 6 years 2 months ago
Joined: 08/24/2010 - 02:19
Posts: 3087
Location: Slovenia (EU)

33696933 wrote:

The other is green with "SE US18650GR T 8A123B23v"
18650 

Definitely Sony 2200mAh. Pretty popular in mainstream HP laptops. Thats where my identical ones came from.

Be sure to grind off the tabs leftovers or you might damage flashlights if the intended use is that.

My samples have still around 2000mAh capacity but are really inadequate to power a good driven XM-L.

Beware to not overdischarge them.

kragmutt wrote:

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

hitchhiker
Offline
Last seen: 8 years 2 weeks ago
Joined: 03/01/2011 - 13:35
Posts: 13
Location: germany

33696933 wrote:

Yes , I love my li-ion cells , now all I need is to find a decent hobby charger to tend to them as the trustfire tr-001 aren't cutting it. 

Take this one

http://www.xtarlight.com/en/05-chanpin/p-001-1.asp?styleid=69



cessnapilot
cessnapilot's picture
Offline
Last seen: 2 years 7 months ago
Joined: 02/28/2011 - 22:15
Posts: 159
Location: USA

33696933 wrote:

Yes , I love my li-ion cells , now all I need is to find a decent hobby charger to tend to them as the trustfire tr-001 aren't cutting it. 

IS there  something wrong with the TR-001 model?  I have had mine for a couple of months and am pretty happy with it.  I know there is probably better out there, but is it still decent?

33696933
33696933's picture
Offline
Last seen: 5 years 53 min ago
Joined: 02/19/2011 - 01:27
Posts: 431
Location: Newburgh, NY

cessnapilot wrote:

33696933 wrote:

Yes , I love my li-ion cells , now all I need is to find a decent hobby charger to tend to them as the trustfire tr-001 aren't cutting it. 

IS there  something wrong with the TR-001 model?  I have had mine for a couple of months and am pretty happy with it.  I know there is probably better out there, but is it still decent?


Not that there is anything wrong with it , a tad slow but its more like that I dont have enough chargers Wink 
ChangchungLeds
ChangchungLeds's picture
Offline
Last seen: 4 months 1 week ago
Joined: 09/20/2011 - 20:18
Posts: 299
Location: Venezuela
I just receive from a friend a old laptop battery and I find 6 sony green 18650 in good shape and good voltage... I find the mha capacity in this thread... By the way, this is a BIG 18650 collection... Congrats...

Zebralight Spark Princeton Inova Petzl Maglite Bushnell a lot of Cree XM-L Lights 18650's Intl-outdoor 3400 Panasonic 3100 Hobby Charger

ChangchungLeds
ChangchungLeds's picture
Offline
Last seen: 4 months 1 week ago
Joined: 09/20/2011 - 20:18
Posts: 299
Location: Venezuela
Charger??? I think that you need a couples of XTAR WP6, I think that I am going to buy one of these. 33.80$ shipped from USA in ebay...

Zebralight Spark Princeton Inova Petzl Maglite Bushnell a lot of Cree XM-L Lights 18650's Intl-outdoor 3400 Panasonic 3100 Hobby Charger

wiljen
Offline
Last seen: 3 weeks 2 days ago
Joined: 04/28/2011 - 16:04
Posts: 399
Location: East TN, SW VA

I've found that a good test for laptop cells is to test the voltage during salvage.  Anything under 2.8 gets gone.  Those that make the cut get charged to 4.20 and then set aside for 2 weeks.   If they don't hold a charge when measured at 2 weeks out, they go in the junk bucket with those below 2.8.   Generally, I find that if they hold 4.2-4.1 for two weeks they will likely be usable in single cell lights.   I'll occasionally put a few on the hobby charger and see what the capacity is, but I have found that generally the ability to hold a charge is a pretty good predictor of which cells will also still hold most of their rated capacity.

 

kbark
kbark's picture
Offline
Last seen: 4 years 1 week ago
Joined: 07/12/2011 - 13:22
Posts: 370
Location: North Carolina

I've salvaged a bunch of 18650's from dead laptop packs. In every single case an AW or TF flame out performs them hands down. Salvaged cells are good in a pinch, but do yourself a favor and invest in some good protected cells.

arztt
Offline
Last seen: 1 year 9 months ago
Joined: 03/15/2012 - 04:42
Posts: 13
Location: Germany

The Sonys are 2600mAh

on Sony lithium ion cells look at the first two digits in the second row.

8A = 2600mAh

G7= 2400mAh

G6, 6A, 6B= 2200mAh

G5= 2150mAh

G4= 1950mAh

The last 5 digits of that row tell the manufacturing date.

digit 1: year. Q=2008, R=2009, S=2010 and so on

digit 2: month. A=Jan, B=Feb, ...J= Oct

digit 3+4: day

digit 5: electrode history

so the cell on the photo was produced on Oct 29, 2008 (QJ29)

 

on the Sanyo, M51A is the manufacturing date-code

M= 2008 (N=2009....)

51= week number 51 of the year

A is some internal reference

_the_
_the_'s picture
Offline
Last seen: 1 week 1 day ago
Joined: 07/08/2011 - 06:22
Posts: 3633
Location: Finland

Welcome to BLF arztt!

Very informative first post. Thanks for jumping in!

=the=

 

Don
Don's picture
Offline
Last seen: 2 years 7 months ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

Welcome arztt. Good to have you here.

 

Thanks for the information

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

raccoon city
raccoon city's picture
Online
Last seen: 30 sec ago
Joined: 10/06/2010 - 02:35
Posts: 13474
Location: रॅकून सिटी Palm Desert CA USA

Great info, arztt.

Welcome to BLF.  I have fun here and I think you will too.

nekdo12
Offline
Last seen: 5 years 9 months ago
Joined: 02/07/2012 - 12:17
Posts: 403
Location: Slovenia

arztt wrote:

The Sonys are 2600mAh

on Sony lithium ion cells look at the first two digits in the second row.

8A = 2600mAh

G7= 2400mAh

G6, 6A, 6B= 2200mAh

G5= 2150mAh

G4= 1950mAh

The last 5 digits of that row tell the manufacturing date.

digit 1: year. Q=2008, R=2009, S=2010 and so on

digit 2: month. A=Jan, B=Feb, ...J= Oct

digit 3+4: day

digit 5: electrode history

so the cell on the photo was produced on Oct 29, 2008 (QJ29)

 

on the Sanyo, M51A is the manufacturing date-code

M= 2008 (N=2009....)

51= week number 51 of the year

A is some internal reference

Can someone tell more codes for determine production year for Sanyo and Sony cells?

bibihang
bibihang's picture
Offline
Last seen: 2 weeks 5 days ago
Joined: 11/10/2011 - 09:32
Posts: 2387
Location: Malaysia

Are the laptop batteries protected?

Don
Don's picture
Offline
Last seen: 2 years 7 months ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

bibihang wrote:

Are the laptop batteries protected?

 

The batteries are - extensively. But the individual cells in the battery are not.

OK pedant mode off.

They aren't.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

arztt
Offline
Last seen: 1 year 9 months ago
Joined: 03/15/2012 - 04:42
Posts: 13
Location: Germany

nekdo12 wrote:

Can someone tell more codes for determine production year for Sanyo and Sony cells?

Its very simple, because its alphabetical.

Just keep in mind that production year 2008 is Q for Sony and M for Sanyo, then look on your cell and count backwards or forward to your letter while each letter is a year.

fishinfool
fishinfool's picture
Offline
Last seen: 4 months 2 weeks ago
Joined: 03/09/2010 - 00:30
Posts: 4342
Location: Hilo, Hawaii

Aloha and welcome to BLF arztt!

Don wrote:

"But as I said long ago, you are more likely to be killed by a dead fish dropped by a seagull in the Sahara Desert than by a lithium ion

nekdo12
Offline
Last seen: 5 years 9 months ago
Joined: 02/07/2012 - 12:17
Posts: 403
Location: Slovenia

arztt wrote:

nekdo12 wrote:

Can someone tell more codes for determine production year for Sanyo and Sony cells?

Its very simple, because its alphabetical.

Just keep in mind that production year 2008 is Q for Sony and M for Sanyo, then look on your cell and count backwards or forward to your letter while each letter is a year.

Production year 2003 and still 1,16AhLaughing at 1,6A current. Unfortunately just one of six. One 0,76Ah, other four 0,08AhUndecided

raccoon city
raccoon city's picture
Online
Last seen: 30 sec ago
Joined: 10/06/2010 - 02:35
Posts: 13474
Location: रॅकून सिटी Palm Desert CA USA

Good to have you here, arztt.

Pages