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Aliexpress Battery Scams: Lessons from my LF304 Tests

Simon0x

New Member
Joined
Sep 12, 2024
Messages
6
Location
Thailand
I’ve read a ton of warnings about buying cells on Aliexpress, and I know it’s not the best place to get them. But I just want to spread the word about how important it is to choose a reliable supplier. And why are prices on Aliexpress so cheap? It’s like they’re too good to be true!

Buying​

There are a lot of sellers on Aliexpress, and surprisingly, some of them have the same name as each other. Like Diankaishou Cell No.9 Store or Diankaishou Wholesale Channel. And there are more!

IMAGE 2024-12-04 11:12:37.jpg

I’m just starting to explore this topic, so I thought I’d give a few things a try. I’m not too worried about buying something that’s not exactly what it’s cracked up to be, so I went ahead and purchased an EVE LF304 from a seller.

The cell arrived pretty quickly, but it was in a bit of a rough package. I think there are some regulations about how cells are supposed to be packaged, but it didn’t seem too bad.

Testing​

I didn’t have the charger yet, so I couldn’t test the cell right away. It took about two months for my EBC-A40L to arrive. When it did, I connected the cell to the charger and started testing.

I watched some of Andrews Off-Grid-Garade videos and read the data he provides to get an idea of what I was looking for and how to set up the charger. I also looked at the spec sheet of the cell to understand the settings for the EB Tester Software.

Screenshot 2024-12-04 at 11.09.00.png

I wasn’t sure about the 5Ah cutoff, but I don’t think it’ll make much of a difference in capacity if I had set it to a different value. So, there you have it! I suspected that I was sold a 280Ah cell instead of a 304Ah. My next thought was to remove the black cover on top of the cell to see what’s underneath.

IMG_5535.jpeg

So, it’s no surprise that the original QR code was replaced with a different one from a different cell type. A few days back, I got another LF304 from a different seller, and I tested it too. As you can see, it gave different results compared to the first tampered cell.

Screenshot 2024-12-05 100245.png

Communication with seller​

I reached out to the seller about this issue and shared some pictures and test results. He said that the QR code was removed from the manufacturer because the cells were originally made for companies and are now sold for retail. (I’m not going to go into that story…). He also mentioned that it’s common for a 304Ah battery to only have 280Ah. When I told him I’d report this case to Aliexpress, he offered me either a return or a partial refund for the cell. When I confronted him about being a scammer, he only responded with a laugh emoji. It seems clear to me now that the seller is aware of this. So, I stopped talking to him and will let Aliexpress handle the rest.

Aliexpress and return​

So, what can I do next? I paid around $70 including shipping for the cell, and 15 days for the return have passed a long time ago. It’s now been 3 months since the delivery date. However, after contacting Aliexpress, they reopened the return request for me, so I was able to file a claim. I’m waiting for the seller’s response now and will see how Aliexpress handles it. My hope is to get a full refund without having to send back the product. I’ll update this thread once there’s a decision.

About the seller​

I was surprised to see that there are many positive reviews for this seller and that he’s selling quite a few cells. I read somewhere that Aliexpress isn’t allowing buyers to review a product if there’s a dispute or return request open. This might explain why there aren’t many negative reviews. However, I did find one review that mentioned the exact same “problem” I was facing.

Screenshot 2024-12-04 at 15.19.36.png

I’ve come to the conclusion that most buyers don’t have the means to test the cells or have testing equipment.

Final words​

I recently heard from a friend who bought 16x320Ah batteries from Aliexpress. I’m not aware of any EVE 320Ah cells or other companies that sell them. He’ll be able to test the cells soon, and I’ll let you know how it goes! I assume they are just 304Ah or lower than that.

Choosing the right seller is crucial. You can’t rely on the QR codes on the cells, especially since there’s no serial number registration database or similar. It would be fantastic if manufacturers had to register the serial number in their database and if you could query that number to see how often that QR code or number has been checked. A high number would suggest that others have scanned the QR code multiple times already. Right now, anyone can create a QR code with random data and it will pass validation since there’s no cross-check with the manufacturer.

I’m not seeking advice on the refund process. My goal with this thread is to raise awareness about the issues surrounding the sales of the cells. As the refund isn’t processed yet, I’ll update this thread with any updates I receive.
 
I’ve read a ton of warnings about buying cells on Aliexpress, and I know it’s not the best place to get them. But I just want to spread the word about how important it is to choose a reliable supplier. And why are prices on Aliexpress so cheap? It’s like they’re too good to be true!

...
I would say you did pretty good to get 280ah. If this is a repeatable test (and your testing parameters and methods are good) you have a decent cell for the money spent. Yes it is not as advertised. But you knew going in that it likely would not be.

I doubt highly that you will get a refund without return shipping (might not even after doing that) and the cost of that is prohibitive. My advice is to use what you got allowing for the fact that the capacity is less.
 
Absolutely! The 280Ah battery is a great deal for the price. I’ll run another test on the cell and see if the results change.

The seller has until December 9th to respond to the dispute. If he doesn’t, Aliexpress should refund the money without a return. Since the product isn’t as advertised, the seller would have to pay for shipping. He hasn’t said anything yet. I don’t think he wants to risk losing his account, since his business is going well. There are certain things you can and can’t buy from Aliexpress. I’m not saying that Aliexpress in general is bad, and I can understand that it’s not easy for them to verify such cases.
 
Based on my experience with Aliexpress but not with cells I would have thought that Aliexpress will offer a partial refund only. When you report a double din unit that was sold as Android 13 but its 12 or lower they will give you 20% back, not a full refund. Has to be supported by screenshots from an Android App that verifies actual version and reported version.

Hope I am wrong and you do get a full refund.
 
the lesson learned here is to be ready to test any cells as soon as they arrive, and first thing the physical inspection to check the QR code. I have read about the QR code being sanded off before but not seen pictures posted - I wasn't building batteries so didn't deep dive the topic.

And this is a good price for the batteries as they are - I just wonder if they are B grade or have some other issue that got them into that sellers hands to sand things off.

A very close physical inspection in addition to cycle testing is a must. And if you don't have one you should get a YR-1035 meter to measure the internal resistance so you can match them up.
 
Short update, I received a full refund from Aliexpress without returning the cell. They asked me to provide a video and proof that the QR code was tampered with. I uploaded a video and the picture of the QR code I also show in the first post and Aliexpress confirmed it as sufficient evidence. Then it was a little of back and forth with the seller and Aliexpress as they wanted be to return the cell which is not possible due to local shipping restrictions.

Took a while but I got the refund.
 
Short update, I received a full refund from Aliexpress without returning the cell. They asked me to provide a video and proof that the QR code was tampered with. I uploaded a video and the picture of the QR code I also show in the first post and Aliexpress confirmed it as sufficient evidence. Then it was a little of back and forth with the seller and Aliexpress as they wanted be to return the cell which is not possible due to local shipping restrictions.

Took a while but I got the refund.
This is great news!
 

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