If anyone else has bought from these seller please post here. Most people do not have the testing capabilities I do, and I feel bad for people who have been scammed by this seller thinking they got "A Grade" cells when in fact they bought old, used, and potentially dangerous cells.
I am putting together a list of all the multiple stores this guy runs. Its the same people running multiple stores on AliExpress.
--Yinlong specs state a minimum capacity of 45ah at 1C (45 amp discharge) and slightly under 40ah for a higher amp discharge.
This testing below, I only did a 0.5C discharge (20 amps) so I should have easily got 45 + Ah
Also, I started the test at 2.9V which is the absolute max you can charge.. you really should not charge over 2.8 Volts per cell - I also took it down to 1.4 volts and these cells are only supposed to go to 1.5V - so I did everything imaginable to try and squeeze extra capacity out of these cells.
The truth is, these are not 45ah cells. They are also very used.
I tested several others from this batch of 6 I bought and its the same story, or even worse with a jagged discharge graph which looks like it has poor internal resistance from being old and used/cycled thousands of times.
The weight of these cells is around 1170 grams each. They should be 1250+ grams each.
30ah, 35ah, 40ah, and 45ah Yin Longs are all physically the same size, so the higher capacity cells are heavier due to having more electrolyte inside them. .
I have owned 40 ah cells and 35 ah cells and they were approximately
1200 grams for the 35ah cells
1244 grams for the 40ah cells.
So the 45ah should be 1250 grams.. probably more like 1300 grams. But the Yin Long spec sheets shows 1.22kg - close enough to tell me that there is something wrong with these cells before I even broke out the internal resistance meter and the capacity tester.
I saw battery acid leaking and loctite/thread locker on the threads which indicates these are for sure used cells. Yinlong does not put on thread locker from the factory. These also did not come in original Yinlong packaging.
And then comes the capacity testing.. Wow (see attached images) all cells are only pulling 33-35ah. And thats only at 20amp discharge or 0.5C!! I have tested dozens of cells before and I am beyond confident in my capacity tester. It is accurate within 0.1 Ah.
These cells are just a straight up scam. Or should I say the seller "Small Den Lithium" and "Liiokala" and "Battery Supplier Store" is a scammer.
After all the crazy evidence i decided to remove the wrapper to try and find more evidence
So i took off the label and I saw scraped off barcodes where the seller scraped off the barcodes that had the model # and the capacity which said 30ah or 35ah... it was mostly scraped off and it is beyond obvious to me that this seller is an outright scammer. They know what they are doing and they are stealing from people.
AliExpress ruled in my favor and accepted and they are counterfeit cells. But they keep insisting on me working with the seller to come up with a solution. And things have just gone downhill to the point where I am just writing curse words to him calling him a fu**ing scum scammer.
He insists on me sending them back, and I refuse to pay hundreds of dollars for shipping when he knowingly scammed me... if I had changed my mind that is different.. but he knowingly sold me used cells that are only 30 or 35ah.... they are worth only a small fraction of the $280 that i paid for the 6 cells... in fact, I cannot use them at all because they will damage the rest of my LTO bank if i mix them in with it.. its just all around bad.. they are next to worthless to me.
Because AliExpress has still yet to give me a refund and my dispute has been open for over a month, I have started sharing this story everywhere I can. I am going to post a review and share this everywhere. This scammer needs to be held accountable. I did pay with PayPal but I am hoping AliExpress does the right thing and gives me my money back because i feel like I have been stolen from... this is a complete joke.
It is guys like this that gives all the legitimate sellers in China a bad name. Everyone thinks its all scammers and I know that is not true... its just guys like this "small den lithium" guy that make all of China look like scamming thief's. I actually get stuff I like off AliExpress quite often... my capacity tester... my IR meter... all sorts of cool stuff.... I really hope they do the right thing.. because after a month of back and forth I am beginning to feel like I am screwed on getting my money back...
Sorry for the rant, I will post all the pics and evidence I have. Lets keep this thread gong and names of known associates updated so we can keep people from getting scammed by this gang of scammer companies in the future Here is my list of companies I know are the same people. I have done research and found out these 3 are ran by the same people on AliExpress.
"Small Den Lithium"
"LiioKala"
"Battery Supplier Store"
I am putting together a list of all the multiple stores this guy runs. Its the same people running multiple stores on AliExpress.
--Yinlong specs state a minimum capacity of 45ah at 1C (45 amp discharge) and slightly under 40ah for a higher amp discharge.
This testing below, I only did a 0.5C discharge (20 amps) so I should have easily got 45 + Ah
Also, I started the test at 2.9V which is the absolute max you can charge.. you really should not charge over 2.8 Volts per cell - I also took it down to 1.4 volts and these cells are only supposed to go to 1.5V - so I did everything imaginable to try and squeeze extra capacity out of these cells.
The truth is, these are not 45ah cells. They are also very used.
I tested several others from this batch of 6 I bought and its the same story, or even worse with a jagged discharge graph which looks like it has poor internal resistance from being old and used/cycled thousands of times.
The weight of these cells is around 1170 grams each. They should be 1250+ grams each.
30ah, 35ah, 40ah, and 45ah Yin Longs are all physically the same size, so the higher capacity cells are heavier due to having more electrolyte inside them. .
I have owned 40 ah cells and 35 ah cells and they were approximately
1200 grams for the 35ah cells
1244 grams for the 40ah cells.
So the 45ah should be 1250 grams.. probably more like 1300 grams. But the Yin Long spec sheets shows 1.22kg - close enough to tell me that there is something wrong with these cells before I even broke out the internal resistance meter and the capacity tester.
I saw battery acid leaking and loctite/thread locker on the threads which indicates these are for sure used cells. Yinlong does not put on thread locker from the factory. These also did not come in original Yinlong packaging.
And then comes the capacity testing.. Wow (see attached images) all cells are only pulling 33-35ah. And thats only at 20amp discharge or 0.5C!! I have tested dozens of cells before and I am beyond confident in my capacity tester. It is accurate within 0.1 Ah.
These cells are just a straight up scam. Or should I say the seller "Small Den Lithium" and "Liiokala" and "Battery Supplier Store" is a scammer.
After all the crazy evidence i decided to remove the wrapper to try and find more evidence
So i took off the label and I saw scraped off barcodes where the seller scraped off the barcodes that had the model # and the capacity which said 30ah or 35ah... it was mostly scraped off and it is beyond obvious to me that this seller is an outright scammer. They know what they are doing and they are stealing from people.
AliExpress ruled in my favor and accepted and they are counterfeit cells. But they keep insisting on me working with the seller to come up with a solution. And things have just gone downhill to the point where I am just writing curse words to him calling him a fu**ing scum scammer.
He insists on me sending them back, and I refuse to pay hundreds of dollars for shipping when he knowingly scammed me... if I had changed my mind that is different.. but he knowingly sold me used cells that are only 30 or 35ah.... they are worth only a small fraction of the $280 that i paid for the 6 cells... in fact, I cannot use them at all because they will damage the rest of my LTO bank if i mix them in with it.. its just all around bad.. they are next to worthless to me.
Because AliExpress has still yet to give me a refund and my dispute has been open for over a month, I have started sharing this story everywhere I can. I am going to post a review and share this everywhere. This scammer needs to be held accountable. I did pay with PayPal but I am hoping AliExpress does the right thing and gives me my money back because i feel like I have been stolen from... this is a complete joke.
It is guys like this that gives all the legitimate sellers in China a bad name. Everyone thinks its all scammers and I know that is not true... its just guys like this "small den lithium" guy that make all of China look like scamming thief's. I actually get stuff I like off AliExpress quite often... my capacity tester... my IR meter... all sorts of cool stuff.... I really hope they do the right thing.. because after a month of back and forth I am beginning to feel like I am screwed on getting my money back...
Sorry for the rant, I will post all the pics and evidence I have. Lets keep this thread gong and names of known associates updated so we can keep people from getting scammed by this gang of scammer companies in the future Here is my list of companies I know are the same people. I have done research and found out these 3 are ran by the same people on AliExpress.
"Small Den Lithium"
"LiioKala"
"Battery Supplier Store"
