CATL 202ah - new supplier, potential problem

[Oscarfish]

Hello All,

I ordered 4 202ah CATL cells from new supplier. The shipment came yesterday and the cells are bloated to the extent, that i cannot properly install busbars. What do you think of them ? Seller insists they werent like that when they shipped them.

Thanks for help

 

[HRTKD]

Some expansion of the case is normal. I don't see an issue with those cells. Put them in a compression fixture, top balance them, charge them up and then test them for capacity. If they don't reach capacity then you have an objective reason for a warranty claim.

 

[740GLE]

How much did you pay, including shipping, to have them arrive at your door?

 

[Oscarfish]

Thanks for reply, @HRTKD. Will top balance them and test for capacity.
@740GLE 463usd (4 CELLS, 100A 4S JBD BMS with bluetooth and lcd screen, 4 busbars with shipping, tax, customs - DDP)

 

[miran90]

Hello All,

I ordered 4 202ah CATL cells from new supplier. The shipment came yesterday and the cells are bloated to the extent, that i cannot properly install busbars. What do you think of them ? Seller insists they werent like that when they shipped them.

Thanks for help

Even the 300ah catl are bloated from factory..

 

[AntronX]

Even the 300ah catl are bloated from factory..

You probably got used cells. New cells should be near perfectly flat. Example:

 

[SolaroSsaurius]

The shipment came yesterday and the cells are bloated to the extent, that i cannot properly install busbars.

If they're supposed to be "A Grade", brand new, than it's not your problem.
Something is wrong.
Compare to advertising pics and if different get all your money back