Test/Review of Samsung ICR18650-22F 2200mAh (Green)

[HKJ]

Samsung ICR18650-22F 2200mAh (Green)



Official specifications:

• Nominal Capacity: 2200mAh
• Charging Voltage: 4.2V ±0.05 V
• Nominal Voltage: 3.6V
• Charging Method: CC-CV (constant voltage with limited current)
• Charging Current: Standard charge: 1100mA, Rapid charge : 2200mA
• Charging Time: Standard charge: 3hours, Rapid charge: 2.5hours
• Max. Charge Current: 2200mA
• Max. Discharge Current: 4400mA
• Discharge Cut-off Voltage: 2.75V
• Cycle life: 300 cycles to 68%
• Cell Weight: 44.5g max
• Cell Dimension: Diameter(max.):18.4mm, Height: 65mm max
• Operating Temperature: Charge : 0 to 45°C, Discharge: -20 to 60°C
• Storage Temperature 1 year: -20~25°C, 3 months : -20~45°C, 1 month : -20~60°C

The datasheet for this cell says 2008, i.e. it is a old design, this can also be seen on the limited capacity and current capabilities.










The discharge curves looks good enough, good tracking between the cell when not overloaded.















Conclusion

Not the most interesting battery today, but the cell is good enough within its limited capabilities and it can easily surpass some cheap brands.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries

[djozz]

Thanks for the test. If these are cheap, they have their purpose I guess.

[veer (vēer)]

I dont understand - do these come with protection circuit or not?
How do they cut off at 2.75V?

What are they good for, aside from lower capacity?

[Ronin42]

Mine dont set any records but for my C8/S7 lights they work just fine.

[HKJ]

@vēer

I dont understand - do these come with protection circuit or not? How do they cut off at 2.75V? What are they good for, aside from lower capacity?

No protection board and you must control the cut-off.

Today they are old cells and not very interesting.

[veer (vēer)]

I see, thanks, folks!

Ive noticed that Gearbest have them for 2.85$ per cell, so wanted to know whether I should buy a couple for lights:
http://www.gearbest.com/batteries/pp_196911.html

[veer (vēer)]

So I bought them back then and now pulled out of storage to charge and use in light for the first time :D!
Nothing to report, 3.6v after years of storage, not bad, huh?

[Barkuti]

@vēer

So I bought them back then and now pulled out of storage to charge and use in light for the first time :D!

Nothing to report, 3.6v after years of storage, not bad, huh?

Do you remember at what voltage your cells were stored? That is a meaningful detail to determine the overall outcome. If you stored the cells fully charged, bad start.

You can use an analyzing charger to see how they're doing capacity wise.

Cheers :-)

[veer (vēer)]

To be honest, I dont remember, but you can check out my experience with Pananocis 3400mAhs, no scientific data:

After storing some of my Pana’s protected 3400 ICR’s(green ones) for a year fully charged, not properly “cycled” and rarely used before being put into storage and/or after being taken out from storage showed 3000-3100mAh capacity with Lii-500 charger.

Quick look at how much have NCR18650B degraded after two years of rather light use and improper long term storage.

So, as most/some of you know according to Battery University article lithium ion batteries should be kept at ~40% of their capacity for long term storage which is around 3.82V. I have owned for about two years(ordered brand new) 8 pieces of protected Panasonic's NCR18650B batteries with claimed capacity of 3400mAh. Upon receiving them I never tested their capacity due to lack of charger with test function for lithium batteries. Somehow I had an impression that lithium batteries dont have consi…

Will see how well these green Samsungs hold up after couple of cycles as my bicycle light batteries on S2+.