Sanyo UR18650FJ Cell Specifications

LithiumSolar

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Warning: The information in this thread was obtained from various sources on the Internet, including any datasheets linked below, and is provided for reference only. It is not guaranteed to be accurate. To prevent fire or personal injury, never charge or discharge a cell before verifying the information yourself using the original specifications sheet provided by the manufacturer.

Brand:Sanyo
Model:UR18650FJ
Capacity:2100mAh Rated
Voltage:3.70V Nominal
Charging:4.20V Maximum
2100mA Standard
--- mA Maximum
Discharging:2.50V Cutoff
420mA Standard
--- mA Maximum
Description:Red Cell Wrapper
Orange Insulator Ring
18650 Form Factor


Data References:
http://www.houseofbatteries.com/documents/UR18650F.pdf

Pictures:

image_qmnemy.jpg

image_olpjwl.jpg

image_bvtazo.jpg

image_yxsdvc.jpg
 

Detritalgeo

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Nov 29, 2017
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I think I found some of these.. in a Toshiba PA3385U-1BAS 14.8V / 4300 mAh pack.

They have the translucent red wrap and a bright reddish-orange ring.

They have absolutely no outer markings or embossed marking except '130A'.

They do, however, have an 'F' stamped into the steel negative end..

image_eszffo.jpg


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Andee

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Jan 14, 2018
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I have found the same cells as Detritalgeo, mostly likely from a Toshiba laptop battery pack also.

As he described - translucent red wrap and (I would say) a red ring.

As the 'F' stamped into the negative end.

I have markings under the wrap which are "JDHFJT4"
- Above this is "C"
- Under there is 6 numbers, which are different on every cell
- Under this, is a single number towards bottom of cell which all appear different on each cell

** Please delete if this shouldn't have been posted here **
 

Terry01

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Apr 17, 2018
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I got 6 of these too. Mine have the "F" stamped clearly into the steel of the negative end too but there is a writing of sorts on mine that is so light I can't even nearly make it out. The letters are made up out of dots that are so almost not even there!
The cells also have "H43A" embossed onto the wrap that i nearly missed and mine have a single "B" printed clearly on them. Hope they are decent cells. Will find out soon :)
 

ChapStar29

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Jan 26, 2019
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I got a few of these and they have L34C embossed onto the wrap. There's a clearly printed "B" above two more lines of text and the middle is "LH7FJ12" and bottom appears to be unique to each cell...
The reason I'm posting this is because of the capacity readings, the lowest one has been 2886mAh! Most are over 3000mAh! Has anyone else had similar findings?
 

Pino

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Jan 14, 2019
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Hi, I found these cells in a battery pack of an IBM powerpc or storage array where it is used as backup battery for the write cache. In the wrapping you can read "Japan". Under the wrapper I found the "B" and two lines: OE1FJ32 and an unique number. Capacity: 1822, 1542, 1649 and 1702 according to Liitikala Lii-500 "NOR test".
 

JayRock

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May 12, 2018
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Pino said:
Hi, I found these cells in a battery pack of an IBM powerpc or storage array where it is used as backup battery for the write cache. In the wrapping you can read "Japan". Under the wrapper I found the "B" and two lines: OE1FJ32 and an unique number. Capacity: 1822, 1542, 1649 and 1702 according to Liitikala Lii-500 "NOR test".
I have found 2 of these and may have more JI2FJ12 038200 printed on the battery its self. wrapper has J39A. tested 2439mAh
 

Minor

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Mar 22, 2020
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ChapStar29 said:
the lowest one has been 2886mAh! Most are over 3000mAh! Has anyone else had similar findings?
Yes, I have something similar.
Very old Sanyobecome very hot at normal charging currents (0.5-1 A), and all the energy they receive goes to heat. I tested a dozen of these cells 2004 (I46A) and 2005 (J11A) date of manufacture on IMAX B6. At a charging current of 1 A, it was heated to 70 C and the current did not decrease until 2800 mAh was received - I stopped it. At a current of 0.5 A, the heating was up to 50 C with not decreasing current. Stopped after filling 3000 mAh. And if you immediately start to discharge hot cells, yes, it really turns out a giant capacity. But if you cool them to room temperature - 1000-1200 mAh. The same with other old Sanyos - always bad (old Panasonic - always good).

ChapStar29 your cells very old too - 2007 (L34C), and cells of Pino - 2005 (J39A). Possible the same...
 
Last edited:

nightwatch

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Jul 8, 2020
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does anyone know the maximum discharge current for these cells?
I bought 30 of them quite cheap and made a 36V 10S3P battery from them, and the seller informed that the max discharge current is 10A.
But i seriously doubt it - i think it' s no more than 3-4A, because my battery gets quite hot and the discharge rate is no more than 3A per cell.

And there are symbols on the side:
L520
M026
L106
and
LL6FJ12
LLAFJ13
LGBFJ15
do you know what these mean or how to decode it?
 

StafDehat

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Feb 3, 2021
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I just pulled 6 of these out of the laptop battery for an IBM Thinkpad T420.

Each one is a 65mm tall cylinder, 18mm in diameter.

Translucent red wrap, reddish-orange ring on the positive end.
IMG_20210203_163402711.jpg

"I35A" is imprinted into the red heat shrink wrapper on all of them.
IMG_20210203_163544369.jpg

Under the heat shrink (and just barely visible through it), all six are stamped in dotted black ink:
IH4FJT5
Directly under & aligned with that stamp, is another that differs between each cell - each is 6 digits, though.
IMG_20210203_163014968.jpgIMG_20210203_163115436.jpg

In addition, each cell is also stamped with a 'C' off by itself but always toward the '+' end,
and a single digit that varies between cells, off by itself but always toward the '-' end.
IMG_20210203_164558750.jpg
No idea what that "C" and "5" means.

So, my 6 cells are stamped with the following ink:
IH4FJT5, 096314, C, 5
IH4FJT5, 067079, C, 1
IH4FJT5, 084832, C, 1
IH4FJT5, 096307, C, 5
IH4FJT5, 069240, C, 6
IH4FJT5, 058911, C, 2

Mine also have 'F' stamped into the metal casing on the negative terminal.
IMG_20210203_165949515.jpg

The actual model number, "UR18650FJ", does not appear anywhere on the cells.

I would guess that the top row of dotted-ink stamp on the metal casing indicates the production run.
The bottom row likely indicates the serial number of this particular cell, within that whole production run.

The 4 characters embossed in the red wrap appear to be a Sanyo date code, of sorts - you can decode it by inputting the first 3 characters here:

For example:
H43A = October 2003
I46A = November 2004
J11A = March 2005
J39A = October 2005
L19C = May 2007
L34C = August 2007
 
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