EVE Lf280K - terminals with corrosion and weird safety vents !

[LaFabrik]

Hi,
I received this week a new batch of 20 EVE Lf280k cells from Qishou,
- 4 cells have terminals with corrosion and
- 5 cells have weird safety winds.

I would like to have your opinion on these 2 problems please ?

on the photos bellow, i show you "normal" teminal and the 4 with corrosion, ans one normal safety vents, and the weirds ones

 

[houseofancients]

did you scan the cell's qr code with qr code scanning app ?
corrosion could have a number of reason, being used, but also beong stored for a while being 2 of them

 

[LaFabrik]

did you scan the cell's qr code with qr code scanning app ?
corrosion could have a number of reason, being used, but also beong stored for a while being 2 of them

here the scan

 

[houseofancients]

some are from januari, so have been sitting a while which could cause some corosion.
would clean the terminals and test them after.
corrossion could cause resistance ( heat) , so make sure you clean