Test/review of Samsung INR18650-25R 2500mAh (Green) Ebay

[HKJ]

[size=+3]Samsung INR18650-25R 2500mAh (Green) Ebay[/size]

Official specifications:

• Type: Lithium-ion
• Composition: LiMn Hybrid (IMR)
• Rechargeable: Yes
• Positive terminal style: Flat top
• Protection: Unprotected
• Capacity: 2500mAh
• Max continuous discharge: 20A
• Nominal voltage: 3.7V

Batteries marked Samsung from ebay.

The two cells matches fairy well, i.e. it is probably new cells, but they cannot deliver more than about 10A and they are strained to do that.

[size=+3]Conclusion[/size]

This is definitely not a Samsung INR18650-25R battery, it is some, probably old, low capacity cell and not designed for high current.

The cell works and would have been a acceptable cell about 10 years ago.



[size=+3]Notes and links[/size]

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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

 

[john61ct]

Why not mark these as counterfeit right in the title? Should not IMO use the Samsung 25R label without prominently stating "supposed" or "fake" right there

Most people searching / scanning this info would miss that these are a scam.

 

[DayofReckoning]

I have to agree. These should be clearly marked as fake/counterfeit.

 

[WalkIntoTheLight]

He did say it was counterfeit right in the title. It says "Ebay".

 

[HKJ]

Ebay is a good clue that they may be fake. I have tested a cell with this name four time, two was genuine, two not, both from Ebay.

You can check them here: https://lygte-info.dk/info/batteryIndex.html
Type the battery name into the search box.

 

[john61ct]

Thanks, and in general for your very valuable service.

Just a suggestion. . .