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Need some help to ID the Li-ion cell
#11
Yes, they are 2500mAh Sanyo cells.
3.7x2x3x2.5 = 55.5Wh.
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#12
(08-29-2019, 07:13 AM)Overmind Wrote: Yes, they are 2500mAh Sanyo cells.
3.7x2x3x2.5 = 55.5Wh.

so the cell used is the Sanyo UR18650FK?
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#13
(08-29-2019, 07:33 AM)Lockon Wrote: so the cell used is the Sanyo UR18650FK?
Lockton,
You said that you pulled the cells from a dell pack that said 56Wh
So Overmind showed you the calculation  that indicates that they are UR18650FM cells rated at 2500mAh.
3.7 volts x2 parallel x 3 series x 2.5 Ah is equal to 55.5Wh

If you pulled the cells from a 46Wh or 47Wh pack then they would be UR18650FK cells rated at 2100mAh.
3.7x2x3x2.1 = 46.6Wh.

So according to your dell pack at 56Wh, no the cells are NOT UR18650FKs but they ARE UR18650FM.
Do not pay attention to the insulator ring as Sanyo has used blue, green, black, etc for the UR18650FMs
Not sure we can explain it any better that that.

Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6149
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2760
For Info Google Drive
Not your average Wolf       
            Cool
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#14
I see. thanks for the enlightment.
now i know i can use this way also as an additional intel to ID the cell that i salvage.

Thanks Wolf and Overmind!!
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#15
(08-28-2019, 05:29 AM)Geek Wrote: Please take photos. Wrapper and top colours help identify a cell.

i tried to google and alibaba it for some info but none is found
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Korishan (09-13-2019, 11:36 PM), Overmind (09-02-2019, 11:31 AM), Smokealarm (09-02-2019, 05:35 PM), romcek (08-31-2019, 05:12 PM), 3xtr3m3 (08-28-2019, 06:13 AM), rakso (Yesterday, 11:02 AM), LeoKK (09-05-2019, 04:44 PM), niels (08-30-2019, 08:09 AM), hschlech (08-28-2019, 05:15 AM), Lockon (09-02-2019, 12:57 AM), James-w (09-03-2019, 11:52 PM), Vladimir-P (09-02-2019, 09:42 PM), BrettAtkins (09-02-2019, 02:21 PM), kevinjaye (08-28-2019, 09:04 PM), ajw22 (08-28-2019, 11:45 AM), ozz93666 (08-28-2019, 06:27 AM), jdeadman (Yesterday, 03:08 AM), Geek (08-30-2019, 04:22 AM), Oz18650 (09-13-2019, 11:09 PM), Ibiza (Yesterday, 12:18 AM), thunderheart (08-29-2019, 03:23 PM), Riplash (08-29-2019, 12:07 AM), jaeger-audiodesign (08-28-2019, 12:44 PM), clupton (08-29-2019, 12:08 PM), Wolf (Yesterday, 10:33 AM), Generic (08-28-2019, 02:38 PM), stevelectric (08-29-2019, 10:30 AM), BAILIYAT (09-13-2019, 10:56 PM)

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