Real or fake samsung 25r's

[webstaff]

I've had some inr18650-25r greens cheap £2.29 each and they are missing the stamp on the bottom and the cans don't have any markings on either.
They test well though which has throw me as they measure up on capacity, but they are weighing in at 46.3g not the 45g max that sumsung say is the max.

What do you recon fake or real?

Regards
Dave


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[Chalo]

If the capacity is there, and you don't mix them with cells from another batch, then what does it matter?

 

[eee291]

B or C grade cells aren't marked in some cases.
But since the Capacity checks out then maybe you could try measuring their internal resistance.

 

[Bg-electric-cycle]

The clones are virtually indistinguishable from the genuine. Capacity testing won’t give them all away.

 

[multifrag]

Try discharging it at 10/15/20A and see how it goes with temperature and capacity. Discharging at 1A for capacity is useless unless you're planing on building a battery with a lot of parallel cells.