Beware of greedy and cheap to buy fake lithium batteries

Recently, since the beginning of this year, battery explosion accidents have often been seen in the news. According to investigations by relevant departments, the accidents are mostly caused by counterfeit cottage batteries. It is understood that there are a large number of counterfeit lithium batteries on the market today, and their selling prices are generally cheaper.

There are two main sources of counterfeit cottage lithium batteries, first, through self-made; second, through the recycling of branded waste batteries for modification. According to the investigation of relevant departments, some cottage batteries can be produced on site. Some bad merchants purchase low-quality batteries without any manufacturer's name and anti-counterfeiting mark for the sake of profit. The battery is made into a mold to install a protective circuit board for the battery core, and then the positive and negative electrodes are matched, and then the packaging paper of the brand battery is wrapped, and one battery can be made within 5 minutes. It is reported that the packaging paper of these brand batteries has been flooded online.

Recycling used batteries for retrofitting is another important source of counterfeit batteries. According to an industry insider, some of the brand's used batteries have a certain capacity after being abandoned. Therefore, some small workshops will carry out certain tests by recycling these used brand lithium batteries, and find out that the available batteries are repackaged outside. The branded battery pack is sold as a new lithium battery. According to reports, there are currently hundreds of small companies that make batteries in Guangdong.

The self-made cottage counterfeit battery is not guaranteed because of the quality of the battery, and it does not follow the rigorous production process, which has great security risks. Zhang Junliang, professor of the Energy Research Institute of the School of Mechanical and Power Engineering at Shanghai Jiao Tong University and deputy director of the Fuel Cell Research Institute, said that because the electrolyte materials of batteries such as lithium batteries and nickel-metal hydride batteries are extremely explosive, no special factory can produce them. If the seal of the original cell is destroyed, it is easy to cause electrolyte leakage and danger. The counterfeit lithium batteries that have been modified with used batteries have a very short life, and they will be out of power for a few times, and they are also prone to explosions due to short circuits.

Because the price of fake lithium battery is much cheaper than that of genuine lithium battery, it has also won the favor of some consumers in the market. A counterfeit battery marked 2000mAh on the market is only 40-60 yuan, which is several times cheaper than similar genuine batteries.

Genuine lithium batteries generally have the following appearance characteristics:

1. The lithium battery label adopts the secondary printing technology. Under certain light, from the side, it is obvious that the color of the barcode part is darker than the rest.

2. The surface of the lithium battery is white with a metal object, and there are traces like pencils.

3. Lithium battery shell is made of special materials, very strong, not easy to damage the general means cannot open the battery.

4. The appearance is neat, there is no extra burr the outer surface has a certain roughness and comfortable the inner surface feels smooth, and the fine longitudinal scratch can be seen under the bulb.

5. The lithium battery electrode and the mobile phone battery have the same width. The insulation material between the battery charging electrode sheets is the same as the outer casing material, but it is not integrated.

In order to prevent the purchase of counterfeit and shoddy lithium batteries, consumers should obtain information from the dealers about the sampling test of the battery by the technical quality supervision department. The indicators include the lithium battery capacity at a glance, and check the battery capacity index. Be careful to save the warranty card. Under normal circumstances, lithium batteries should be kept for at least one year. If quality problems occur during the period, you can contact the dealer to request a refund. Some experts remind consumers that when purchasing batteries, they must choose genuine batteries produced by powerful battery manufacturers through regular channels, and avoid buying counterfeit and inferior products because of cheapness.

The page contains the contents of the machine translation.