The QR code B to A Grade problem
Q. What is a QR Code? A. Its a 3D barcode
Q. What is a Barcode? A. A visual representation of data
Q. Can a barcode be scanned to verify authenticity of unique products?
A. NO! A QR code does not authenticate product genuineness because it can be easily copied or duplicated by anyone.
Put Simply, if I have some text or numbers, I can quickly and easily generate a QR code. It is static data. It does not connect to EVE or any other manufacturer.
QR Codes for DUMMIES
Below this paragraph I have given you a QR code generator. You can make it do whatever you want within a set number or characters. It can create any data, like
If I have a spreadsheet with genuine QR codes, I can then generate a QR Code. If someone gets a hold of a spreadsheet like this one, attatched here. 
Click it to download the spreadsheet of real QR codes, from a real EVE spreadsheet
24 character and numbers or “string” of numbers and letters or take you to a website.
Add your title here
Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts. Separated they live in Bookmarksgrove right at the coast of the Semantics, a large language ocean.
Add your title here
Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts. Separated they live in Bookmarksgrove right at the coast of the Semantics, a large language ocean.
QR CODES DO NOT AND CAN NOT VERIFY AUTHENTICITY
THIS QR WILL have the data https://www.lifepo4.com.au. You can scan this with a camera app, or QR Code scanner and it will take you to this website.
spreadsheet with genuine QR codes, I can then generate a QR Code.
If someone (think shady chinese battery mafia figure) gets a hold of a spreadsheet like this one, attatched here. They can then upload the data onto the Laser Machine, then one by one, they will write over the top of the Invalid or B Grade QR Code. Thus making a Battery cell with 280ah appear to be a 330ah cell.
It is really simple, the entire process takes a few seconds at most per cell. I have seen a video of this being done, I did not have the ability to save that video, and I can not seem to find it no matter how hard I google, and Baidu it. The videos are private for obvious reasons. But they do exist.
Click it to download the spreadsheet of real QR codes, from a real EVE spreadsheet
2024 June – 5200pcs of EVE MB31 Spreadsheet – Real data, real QR Codes
Q How does QR replacement take place, and who is doing it?
A. In china, there are vast warehouses full of products that did not meet specifcations for use in commercial or high voltage battery pack use.They are still batteries, and they work, but for how long I hear you ask?
“how long is a piece of string”
Summary
A QR code is like a sticker. Anyone can print the same sticker and put it on anything, so it doesn’t prove the product is real. Only trusted sellers, like us, can guarantee the product’s genuineness.
Millions of cells are produced every month, and cells are graded by the manufacturer, its cheaper to sell them as lower grades that to remanufacture them.
The cells are sorted into groups by EVE, they then, sell by tender all the B grade (Solar Grade) cells off for a big discount, most of the reports indicate that it is about 50-60% of the usual A Grade price. The quantities, are very large, think high tens of thousands of cells, from production runs of about 600,000 to 800,000 per factory per month. EVE has many factories, and makes tens of millions of batteries per month, they dont just make LF280 or MB31. They make at least 50 sizes and shapes in various chemistries. Like NMC, NCA, and even Lithium metal, and even non rechargable batteries.
How to decode the data from EVE LFP Batteries
Why Does all this even matter?
The dilemna
In a high voltage battery pack, it’s crucial that the batteries in series are matched and high quality because:
- Balanced Performance: Matched batteries ensure consistent performance, as each battery will charge and discharge at the same rate.
- Safety: High-quality batteries reduce the risk of failures, such as overheating, leaks, or explosions.
- Longevity: Using matched and high-quality batteries extends the overall lifespan of the pack by preventing weak batteries from causing the entire pack to degrade faster.
- Efficiency: Ensures that the battery pack operates at optimal efficiency, providing reliable power output without losses due to imbalance.
By ensuring batteries are matched and high-quality, you maintain the safety, efficiency, and durability of the high voltage pack.
But wait there is more!
If a single battery cell in a high voltage pack is faulty, it impacts the entire pack because:
- Chain Reaction: In a series configuration, the current flows through each cell in the chain. A faulty cell disrupts this flow, reducing the pack’s overall performance.
- Reduced Capacity: The faulty cell limits the pack’s capacity to the weakest cell, causing the whole pack to discharge faster and reducing its overall capacity.
- Safety Risks: A single faulty cell can overheat or fail, potentially causing damage to adjacent cells and posing safety hazards like fires or explosions.
- Increased Wear: The healthy cells are forced to compensate for the faulty one, leading to uneven wear and shortening the lifespan of the entire pack.
In summary, a single faulty cell can degrade the performance, capacity, and safety of the whole pack, highlighting the importance of ensuring all cells are high quality and well-matched.
Now the best way to explain this. using math
if you have 16 cells in series, all of which are 330ah, though a single cell has only 150ah of capacity, then the entire pack will loose 55% of its capacity.
In this example the single cell, limits the pack to a total of 16 x 150ah. Making your pack only 7.6Kwh, when it should be 16.8kwh.
In dollars in todays market, this would mean,
A $5000 investment would loose $2750 in value.
Making your battery worth only $2250
Not only this but the cell will continue to cause problems, causing your power to cut off regularly, and remain out of balance, and it will strain every other component in your pack.
