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Sanyo UR18650F Cell Specifications
#1
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:UR18650F
Capacity:2500mAh Rated
Voltage:3.70V Nominal
Charging:4.20V Maximum
1750mA Standard
2500mA Maximum
Discharging:3.00V Cutoff
2500mA Standard
5000mA Maximum
Description:Red Cell Wrapper
Blue (Cyan) Insulator Ring
18650 Form Factor

Data References:
http://www.batteryonestop.com/baotongusa...0f-26a.pdf

Pictures:
Dietmar Rheeder-Kleist likes this post
#18650
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#2
Hi, I have few of these, as usual with sanyo almost no reference to the exact model labeled, my capacity test give even 2500 so I think it is one of these:

http://www.candlepowerforums.com/vb/show...0mAh-(Red)

Even have labeled Sanyo R1122 as others reported on that thread.

Datasheet found for these capacity:

http://www.batteryonestop.com/baotongusa...0f-26a.pdf

Attached some pictures.

Dietmar Rheeder-Kleist and Connexium like this post
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#3
Thanks! I updated the information. I too have boxes of these cells and all of mine test 2500-2600 as well. It's annoying that they don't print models on the wrappers.
Dietmar Rheeder-Kleist likes this post
#18650
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#4
I have bumped into similar cells, but these are marked UR18650FM not as text on the wrapper but as tiny bumps in the wrapper. You can only see this tiny text if you hold the cell into a bright light an turn the cell around until You spot the text.
It says "SANYO L "LR reversed, some kind of logo, I think", UR18650FM R1122", "N48B".

2 cells has "O22B" as the last line, it must be some kind of date because these cells are much healthier.

ChrisD
Dietmar Rheeder-Kleist likes this post
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#5
As others have stated, I found some that have UR18650FM R1122 N41B embossed on it.

The wrapper is a much more translucent red than other Sanyo wrappers, and it has a light teal ring.

This paper states the 'FM' variant is 2600 mAh (https://minerva-access.unimelb.edu.au/bi...sequence=1)

As does this link: http://www.simpower.co.nz/product_info.p...ts_id/5816

...and this link... ftp.ftp.ute.com/PM/Batteries/1400-202371G.pdf



More F datasheets here: http://shop.battex.cz/pdf/1S1P-UR18650FM-K.pdf
and here: https://www.master-instruments.com.au/fi...8650FM.pdf

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#6
I found another variant, got it from a medi pack

Labels (lightly printed in gray): 
SFPFK52
082435
Labels (stamped)
SANYO L JAPAN
UR18650F S29B

red with green ring

Edit: I guess they are those: https://secondlifestorage.com/showthread.php?tid=4871 so it would be wrong thread here.
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#7
90% of my UR18650F's have green isolator rings...

I've also got two different wrap colours... older cells are red whereas the newer cells are slightly pinker..

Infront of me I have

UR18650F R1112 - Red/Green
UR18650F M50A - Red/Cyan
and
UR18650F T27C - PinkyRed/Green

Hope this helps (more likely to further complicate things... but oh well).
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#8
To help those wondering about age, here's how you decode Sanyo's date. It is usually on it's own line, not with Sanyo or 18650.

1. The first letter = year. K =2006, L = 2007, M = 2008, N = 2009, O = 2010, P = 2011, Q = 2012, and so on.
2. The latter 3 numbers+letter = week.

So just grabbing one on my bench, it has L28A. So it is from 2007 on the 28th week (mid July).
DCkiwi likes this post
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#9
I also have URI18650F 2.4AH but in pink one (black top insulator) and its not getting hot when being charged unlike the red ones seems like a goodcell. URI18650F(pink)/URI18650FM(reflective red)/URI18650(red)
see pictures.
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#10
(01-03-2019, 04:22 PM)hazSolar Wrote: To help those wondering about age, here's how you decode Sanyo's date.  It is usually on it's own line, not with Sanyo or 18650.

1. The first letter = year. K =2006, L = 2007, M = 2008, N = 2009, O = 2010, P = 2011, Q = 2012, and so on.
2. The latter 3 numbers+letter = week.

So just grabbing one on my bench, it has L28A.  So it is from 2007 on the 28th week (mid July).


Very useful, thankyou.

Such a shame there is no wiki here to get this into a place where it will be seen.
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