Alkaline
Solar Wizard
Also another option is that you may be getting cells form 2021 when EVE was not putting B on grade B cells... either way the prices that you are being quoted by the WangHeng seem dubious.
That's what I got out Amy's explanation as well.Those are not tested and batched. I know from my experience. The extra cost for tested and batched by internal resistance is worth it.
Someday I'll probably pull those battery cells out and use them in the golf cart.
yes it isIs this the store/seller?
Wangheng (shandong) Information Technology Limited - Lithium Ion Batteries, LifePO4 Battery Cells
Wangheng (shandong) Information Technology Limited, Experts in Manufacturing and Exporting Lithium Ion Batteries, LifePO4 Battery Cells and 301 more Products.whbattery.en.alibaba.com
hidden QR code?
Okay there is a B after the QC in the serial codehidden QR code?
Not sure she has gone for the day and I haven't received the clear QR image or a good test reportThe ones she is claiming are grade A have B on the qc code?
| 16 | USD 92 | USD 1,472.00 | ||
Total Order Amount:USD 1,792.00 |
Did you ask for the test report?Decided to pay a little more and bought 16 cells from Shenzhen Basen Technology. Shipped from China and baba fee $ 320. They are suppose to be a reputable reseller and I was given all the assurances of matched, new cells
EVE 3.2V 280K( the laser attached double terminals with expansion bus bars and screws) 16 USD 92 USD 1,472.00 Total Order Amount:USD 1,792.00
from reading lots of posts it's hard to trust lfp battery sellers as an entire group except the US based ones where consumer protection laws help.Hopefully you'll have better luck then me, I got screwed over by Alex Chen From Basen:
What is going on here? Just got ZKE-40
Recently, I am thinking relying on AH is not enough to determine cell quality, so I finally ponied up the cash and bought a ZKE-40 tester and tested 1 of my Luyuan 280K cells, matched & batched genuine. As you can see it falls a bit short on the AH, but at the same time exceed the WH of the...diysolarforum.com
These were supposed to be grade A Perfect Cells... All Alex said was to "trust him"...
Wouldn't surprise me if Shenzhen Basen uses the name to grab orders from Shenzhen QishouHopefully you'll have better luck then me, I got screwed over by Alex Chen From Basen:
What is going on here? Just got ZKE-40
Recently, I am thinking relying on AH is not enough to determine cell quality, so I finally ponied up the cash and bought a ZKE-40 tester and tested 1 of my Luyuan 280K cells, matched & batched genuine. As you can see it falls a bit short on the AH, but at the same time exceed the WH of the...diysolarforum.com
These were supposed to be grade A Perfect Cells... All Alex said was to "trust him"..
from reading lots of posts it's hard to trust lfp battery sellers as an entire group except the US based ones where consumer protection laws help.
I haven taken the gamble before and hope Basen does me right. I got all the same assurances. I don't mind if they aren't EV quality as long as they work for my intended purpose a 48v battery for RV and home use.
So, if you buy a B that's sold as an A and the QR tag is intact it's a fake?If you get a test report its real, if not, it's very likely grade b.
As for ESS or EV that is based on the manufacturer e.g.
Example here is the LF280K, its rated for Energy Storage System:
https://diysolarforum.com/resources/eve-lf280k-s04.296/. download the file and go to page
search for GB/T 36276-2018 in that PDF and you'll find this is a test for Energy Storage. So EVE only got this cell certified for Energy Storage applications.
On the other side if you look at the 304 its been certified for electric traction battery:
EVE LiFePo4 LF304 (3.2V 304Ah) Product Specification Data Sheet (version B) 2020-06-18
Data sheet for EVE LiFePo4 304AH cells received from Shenzhen Qishou Technology Co., Ltddiysolarforum.com
if you go to page 4 on the 304 pdf, you'll see they tested this to GB/T 31485-2015 which is an electric vehicle battery test. So this would make it an EV cell.
Basically you can make cells to meet different requirements, however, many people get confused by this and say if I cell is rated for EV and fails then it becomes an ESS cell. No, if you fail Medical School, you don't get to go around calling your self a Dentist ( * equips ?️ to protect against angry dentist ).
So you can look at the Cell's data sheet to find out what it has been tested against, some cells have multiple certifications while others only have 1.
It has nothing to do with grade A or B, if you fail testing you get a B mark if its EVE, or they will take a Dremel and mar up the qr code if its REPT, Ganfeng, Envision and Many other manufacturers (which EVE should do as well).