Help me identify these 18650 cells

Take this one

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



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

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…

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…

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.

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.

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

Welcome to BLF arztt!

Very informative first post. Thanks for jumping in!

Welcome arztt. Good to have you here.

Thanks for the information

Great info, arztt.

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

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

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.

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.

Aloha and welcome to BLF arztt!

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

Good to have you here, arztt.

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.