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Panasonic CGR18650CG 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:Panasonic
Model:CGR18650CG
Capacity:2250mAh Rated
Voltage:3.60V Nominal
Charging:4.20V Maximum
1500mA Standard
--- mA Maximum
Discharging:3.00V Cutoff
430mA Standard
4330mA Maximum
Description:Green (Light) Cell Wrapper
White Insulator Ring
18650 Form Factor

Data References:
http://www.meircell.co.il/files/Panasoni...8650CG.pdf

Pictures:
bfleury likes this post
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#2
Just had a strange experience with these cells.

One of my cellbanks 112p was indicated low by my Batrium, so I swapped in another cellbank.

ICharger reported 182 Ah cap, (should be 250)???

Desoldered all fuses on the positive side and found that 24 of these cells were zero volts which were the number mounted. ?? Seems that they had committed collective suicide.
What I, so far have checked of the Remaining 88 cells of various makes and models, seems to be OK.

Think I will have to inspect my other cell banks to see if any more of these cells are mounted and if they are OK.

ChrisD
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#3
It would be interesting to find out what the IR of these cells is or was.
My findings on any CGR******* Panasonic cells is anything >65mΩ  (AC Impedance, 1000 Hz 4 wire kelvin as per manufacturer) is suspect to SD and degradation.


Wolf
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#4
I had 2 of these cells trip CID in storage. Sounds like all your cells tripped CID during use.
Check out my long-term capacity test of 18650s: https://secondlifestorage.com/showthread.php?tid=6868
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#5
Update data sheet

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Attached Files
.pdf   Panasonic CGR18650CG.pdf (Size: 64.53 KB / Downloads: 3,200)
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#6
If You accidentally charge these cells in sub-zero temps, this is what they do. Last spring I had 42 cells that just stopped working.
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#7
i have a few that tested fine 2 years ago.
they were in a case with a flashlight and forgotten.
they were fully charged at that time.i did a check to see how much if any degredation had occurred.
they were both at 4.15v and ir around 50mohm.
i topped them which took little time.
at a 1a load on the triton they stay around 4.05 a while like a good cell will.
about 30 min later get the discharge end tones.
about 300mah.rest a while and do it again with similar results.
passivation?
i will discharge slowly to get em empty and see if its reversible.
if i read the code correctly they are 2009 12 19
so dec 19 2009
9z19
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