Brandonlucky
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Shenzhen Basen CATL 310ah Capacity Test
- Thread starter Brandonlucky
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Looks good, 302Ah on this test.
Did you fully charge the cells? I do see the default crappy leads which came with the supplies, so it might be possible to add some more charge. And from the other side, you can go down to 2.5V, so there might be some more Ah, so I think they will come pretty close to the advertised 310Ah
edit: Didn't read properly, 302Ah and not 306Ah.. There is always some variation between the cells, the EVE's tended to be slightly lower than their rated capacity also, the Lishens were somewhat higher than advertised, but I won't complain since they are 'grey marked' cells.
Wondering about other cells if the testresults of other cells are similar, or if there is a huge difference between the various cells.
My first reaction would be: Nice, still 20-30Ah more than the common 272/280Ah cells, for only a few $$ more.
Are these the ones with welded studs?
(I have some ordered also from Basen)
Did you fully charge the cells? I do see the default crappy leads which came with the supplies, so it might be possible to add some more charge. And from the other side, you can go down to 2.5V, so there might be some more Ah, so I think they will come pretty close to the advertised 310Ah
edit: Didn't read properly, 302Ah and not 306Ah.. There is always some variation between the cells, the EVE's tended to be slightly lower than their rated capacity also, the Lishens were somewhat higher than advertised, but I won't complain since they are 'grey marked' cells.
Wondering about other cells if the testresults of other cells are similar, or if there is a huge difference between the various cells.
My first reaction would be: Nice, still 20-30Ah more than the common 272/280Ah cells, for only a few $$ more.
Are these the ones with welded studs?
(I have some ordered also from Basen)
Last edited:
Brandonlucky
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Charged to 3.65 and discharged to 2.61. My tester kept triggering the low voltage cutoff to get to 2.6 flat.
I wanted to do this as safely as possible so I stayed between the 3.65 and 2.6 parameters.
Just to clarify - my readout said 302 and you said 306. Am I missing something? I’d like to be as accurate as possible when providing tests for the community.
Brandonlucky
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John Frum
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The lower value for the test is 2.5 volts.
I doubt there is very much capacity in the final 100mv though.
John Frum
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Same as the eve 280N
EVE LF280N
This Datasheet corresponds to the LF280N, which is the newer model of 280 Ah cell produced by EVE. This is probably not what you have if you bought 280Ah EVE cells on the grey market (Alibaba, etc) unless you bought direct from the manufacturer...
diysolarforum.com
CanadianEH
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Interestingly.. I belive catl sells these sells as 302. Not 310 as advertised on basen. Not surprised It tested out at that.
Brandonlucky
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Good call.
Attachments
Thanks for testing these batteries and publishing your results. Can you please upload the spec pdf to https://diysolarforum.com/resources/categories/battery-cell-data-sheets.3/ I would be interested in having a look.
Alkaline
Solar Wizard
Someone post here how to read the QR code for CATL, I hate this baloney that sellers post, ohh its 310, no its now 302.
Personally I find it ridiculous a company would make a 310 and a 302 cell, more like well the cells that don't meet our 310 requirement we'll sell as 302, which means they are grade B 310s.
Why stop there, they could just as easily call it a GRADE A+++ 295A cell
Personally I find it ridiculous a company would make a 310 and a 302 cell, more like well the cells that don't meet our 310 requirement we'll sell as 302, which means they are grade B 310s.
Why stop there, they could just as easily call it a GRADE A+++ 295A cell
What was the voltage measured at the cells terminals with a DMM? It's my understanding the voltage at the cell will be apx. .2 of a volt higher than the voltage reading on the capacity tester due to voltage drop. 302ah capacity is great
ShockinglyAverage
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Was this the 5 year old Basen or the 9 year old Basen company? Does anyone know if one is more reputable then the other?
Hello @Brandonlucky, what discharge current did you use in your test?
I will soon test these cells myself, but at high current values (40-65A or around there).
I will soon test these cells myself, but at high current values (40-65A or around there).
houseofancients
Solar Wizard
They are exactly the same size as the 280k cells.
Good thing to remember is that EVE doesn't make 310 cells.
These are grade b eve LF304 cells.
They will test the first few cycles between 305-320 ah, but will return to 304ah.
Hello @houseofancients
I doubt original CATLs are grade B EVEs since CATL is the larger company.
I doubt original CATLs are grade B EVEs since CATL is the larger company.
houseofancients
Solar Wizard
CATL doesn't make 310ah cells
They produce 302ah cells, and are in fact grade b, as CATL doesn't sell their automotive grade cell outside car / aviation customers
Same thing applies
Company size has absolutely -0- to do with it
I know they don't openly sell. We get them from gray market.
Anyway, just tested one of mine at 36A discharge and it shows over 313Ah from 3.65 to 2.65V.
I'll probably mount them today to my solar if everything goes well.
I can also QR-code scan them if that helps with anything; it may provide relevant info.
Anyway, just tested one of mine at 36A discharge and it shows over 313Ah from 3.65 to 2.65V.
I'll probably mount them today to my solar if everything goes well.
I can also QR-code scan them if that helps with anything; it may provide relevant info.
