Survey: What is your best 18650 cell and what is it capacity.

Hi, new to the forum but not to battery testing. Have tested about 200 cells so far. My best cells are purple Samsung's ICR18650-28A coming in at 2200mah. using a West Mounting Radio CBA III at a discharge of (.2C) and with a 1 amp discharge they will come in at 2150mah. Mytest procedure is to charge at 1amp to 4.2v and cut off at 2.8v.

I like to see what others are harvesting and what your test results are.
Please include
Cell brand model and type
Cell charge voltage
Cell charge current
Cell cut off voltage
Test current

Test equipment

Reply's are much appreciated and many thanks to all.

2647 mah
IMR 18560E22 BE00319 000790 (Green)
Opus BT at 1000ma

2677mAh
Sony US18650gr-8a 2600mAh rated
charge up to 2.6A
discharge up to 5.2A
2.75 - 4.2V
ICR / LiCoO2


2668mAh
Samsung ICR18650-26C 2600mAh rated
discharge up to 5,2
2.75 - 4.2V
LiNiCoMnO2


charge and discharge current 1A
Opus BT-C3100 v2.2

looks like these packs were like untouched huh?^^

2910mAh
LGDBD11865 L156F042A1 (pink coloured)
Tested using Opus BT-C3100 v2.2 with 1A charge and discharge.
Harvested from alaptop pack containing 9 batteries and all are good
These were exceptional though. Out of 200 batteries so far, my next best is2454, and my average is 1839.

3356mAh
CGR18650D
no manufacturer printed on it (made in Japan)
mint green
with Opus BT-C3100 v2.2 @ 1A charge/discharge
don't remember, where it came from, too many packs disassembled ;-)
next best are about 50 cells with ~3000mAh (NCR18650A), coming from an almost brand new eBike battery that had an accident
tested 2460 cells so far, average is 1805.74 mAh

I have a few in the 2900s. Don't know which specific model they were, the dark brown ones though. I haven't managed to break the 3000 barrier yet.

3391 mAh
Panasonic NCR18650B
Discharge Test at 1.3A With Imax B6Mini
Charge at 4.2v Discharge until 3.0v

jesusangel said:

3391 mAh
Panasonic NCR18650B
Discharge Test at 1.3A With Imax B6Mini
Charge at 4.2v Discharge until 3.0v

Click to expand...

That great I see that comes in at 105% of Panasonic's specs for this cell tested at 20deg C or 101% for a cell tested at 25deg C. Did this cell get warm? Also do you use a PC with that Imax B6 Mini?

Thanks

BamBamsBatteries said:

jesusangel said:

3391 mAh
Panasonic NCR18650B
Discharge Test at 1.3A With Imax B6Mini
Charge at 4.2v Discharge until 3.0v

Click to expand...

That great I see that comes in at 105% of Panasonic's specs for this cell tested at 20deg C or 101% for a cell tested at 25deg C. Did this cell get warm? Also do you use a PC with that Imax B6 Mini?

Thanks

Click to expand...

1.3A is less than 0.5C so doesn't get warm at all. The manufacturer shows discharging graph even at 2C and until 2.5v so I think it is really a good cell, a pity that I own only two.

Normally I don't use the Imax with PC, it would be a good idea to paste the discharge graph.

Regards

2938mah panesonic ncr grey wrap white ring , just got some 40 cells all above 2700mah from laptop packs nr 2 cells are samsung icr 18650-28a blue wrap w ring 2752mah , most above 2430mah tested at 0,5 amp lii 500s

3135mah Sanyo NCR18650BF measured with lii-500 at 0.5A
also got a few panasonic NCR18650B in the 2900's

Oh, best cell for me is my favourite one, actually it isn't the highest capacity cell nor the newest or the best make... it's my personal fav like when I was a kid I had my best plastic soldier.

NCR 18650 - LiIon - MH12210 - Made in Japan
Gray - around 2700mAh
Age: 8 to 10 years at least!
Dirty cells with perfect wrap

Can't use them in powerwall so I use them for my bike and for my little power boxes around the house. They are quite old cells found them in old notebook batteries thrown in a box at my dad's old shop. Love them!
Short circuited two some time ago while inserting them into a modified 18650 plastic holder (serial to parallel)... They made a load of white smoke, holder's metal contact became hot bright red and I was real frightened because I didn't know how to get the cell out... got the first tool I had next to me and extracted the cells. Binned both cells.

Second best:
NCR 18650PF - same writings as above
Light green - between 2800 and 2900mAh
Quite new I suppose.
Sent to me by my friend from WeSellCells but too high capacity for my powerwall.

Liitokala 500 for all test, discharge is max 500mAh, sometimes good to get full capacity out of ICR cells (at 1000mAh you'd get a lower capacity).

Got a 3500mAh Red Panasonic B, followed close by a 3400mah series C.

Those are brand new, I received them for testing.

The best cells I have and have ever seen I covered in this post -

Some of these cells are testing into the low 3600s mAh.