Shenxing Battery , CATL new product

[Joeboy]

Thanks Joeboy, I've never been one for accepting info without being sceptical, especially from salespeople but I'm also happy to admit when my scepticism was unfounded.

But with such expensive transactions it's definitely a sensible starting point for anyone looking at buying new cells from the other side of the planet.

Happy to share my deep dive into it

I'm also looking forward to building my 24v 26kWh LFP battery bank on the barge, hopefully I'll be starting a thread by October!

Can't wait, exciting times. Getting that sort of energy density? Absolutely .

[Colin Deng]

Sorry @Colin for doubting your information! I found a video testing the new LF280K V3 @ 310Ah



So EVE really are confusing everything by still calling it LF280K! breaking the sectors whole naming based on Ah system

That will also now make it easier for the less honest Alibaba stores like Docan and the many others who rewrap B Grade cells and claim they're A grade, to use B grade 304's and claim they're the new 280 V3's (although the new stud pads are octagonal)

So buyer beware on Alibaba It's a shame as often B grade are absolutely fine for us as storage, if they're properly matched and batched, and sellers were just honest about it, because they're much more affordable.

The cell market is a bit in chaos already with re used cells and B grade rewrapped cells all over Alibaba claiming to be new A grade, how do you feel about this Colin, does Deriy use B grade and explain this?

GobalPower and Shenzhen Luyuan on Alibaba are both clear about whether the cells are A grade or B grade. EVE also sell direct, so only grade A from them. In the UK Fogster also sell cells and clearly state A or B grade, but they're expensive. I couldn't tell from the Deriy Alibaba store what was what, and there are hundreds of listings for almost identical cells, which is hard to navigate.

This is an explanation from Gobelpower:
High Speed Electric Vehicle (HSEV) = A grade new from manufacturer
Low Speed Electric Vehicle (LSEV) = B grade cells, rejected by manufacturer

"LSEV Grade cell, these cells usually did not pass the strict testing by the manufacturers and with a B-Mark code (or reprinted intact OR code by some sellers, this may be due to optical imperfections, higher self-discharge, lower capacity and/or higher internal resistance, Unfortunately the manufacturers don't explain which aspects are the reasons to mark a specific cell as B-Mark, we will do some sorting and matching work before using, and test the voltage and internal resistance (lR), capacity for the LSEV grade cells and discard cells with a nominal capacity lower than required..."

Hi

Sorry for the late reply , having a busy weekend
Some company selling the B grade cells and some are selling the A grade cells
We sell the cells with the test report from EVE, Which can proves that the battery are A grade
And the capacity of the new version battery , it reach 310ah+ or more , but still name it for 280K
The reason why they still do so also beats us

Since the EVE 280K already has the high capacity , the EVE 304Ah is not easy to find and buy now..

The battery with the B mark on it , from China, we got a different "story"
EVE wants to distinguish the real reseller and others
The one they have contract with, they supply the cells without the B mark while others are now

Hope it will be helpful