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Why did the battery I bought from Contemporary Amp Technology Co., Ltd. cross the QR code?
The battery QR code of Contemporary Ampere Technology Co., Ltd. may be deleted due to the following reasons:

1. Counterfeiting. In order to prevent the appearance of counterfeit and shoddy products, Contemporary Ampere Technology Co., Ltd. may add anti-counterfeiting measures such as scratches to the battery QR code to ensure that consumers can buy genuine products.

2. Secondary sales. In order to reduce costs, some merchants may recycle second-hand batteries for resale, while in Contemporary Amperex Technology Co., Ltd., in order to prevent secondary sales, they may scratch the batteries for identification.

3. Quality problems. In the production process, if the battery has some quality problems, it may be crossed out on the QR code to mark the problems of this batch of products, which is convenient for traceability and handling.

Generally speaking, the battery QR code of Contemporary Ampere Technology Co., Ltd. was crossed out to ensure the quality and safety of products and protect the interests of consumers. When purchasing, consumers should choose formal channels to avoid buying fake and shoddy products.