Do you frequently purchase counterfeit batteries? Teach you how to identify lithium battery products!
Lithium batteries have the advantages of small size, large capacity, and no memory effect. In some applications, they have basically replaced traditional nickel hydrogen rechargeable batteries and other batteries. Currently, many high-end products on the market use lithium batteries. However, due to the high price positioning of lithium batteries in the market, the phenomenon of using counterfeit batteries to impersonate original batteries has been repeatedly banned.
1. View anti-counterfeiting labels
The key is to check if there is an anti-counterfeit label. Generally speaking, most branded batteries will have an anti-counterfeit label attached to the joint of the battery casing when they leave the factory. So when purchasing, pay attention to whether the anti-counterfeiting label is properly attached, and if necessary, scrape off the password coating of the anti-counterfeiting label to verify its authenticity. Finally, it is also important to pay attention to the production date of the machine printed on the lithium battery.
2. Charging process inspection method
Generally, genuine lithium batteries should have an overcurrent protector inside, which automatically cuts off the circuit in case of external short circuits or excessive current to prevent burning or damaging electronic products. Lithium batteries also have an overcharge protection circuit, which will automatically cut off the power supply when non-standard appliances are used or when the AC current is too high. If the battery is found to be severely overheating, smoking, or even exploding during the charging process, it indicates that the battery is fake.
3. Performance identification method
Testing battery performance is usually a relative concept, and the rated capacity of the battery should not be less than 95% of the standard capacity. After being fully charged and placed for 28 days, the minimum capacity should not be less than 60% of the rated capacity, and the battery service life should not be less than 400 times; If the battery does not meet the above standards, it can be judged as counterfeit.
4. All genuine lithium batteries should have a neat appearance, no excess burrs, a certain degree of roughness on the outer surface, and a comfortable hand feel; The inner surface feels smooth, and fine longitudinal scratches can be seen under light. The width of the battery electrode is the same as that of the mobile phone battery cell, and the corresponding positions below the battery electrode are marked with [+] and [-] marks. The isolation material of the battery charging electrode is the same as that of the shell material, but not integrated.
5. Compare the size of battery capacity
Typical cadmium nickel batteries have a capacity of 500mAh or 600mAh, while hydrogen nickel batteries have a capacity of only 800-900mAh; The capacity of lithium-ion mobile phone batteries is generally between 1300-1400mAh, so the usage time of lithium-ion batteries after being fully charged is about 1.5 times that of nickel hydrogen batteries and about 3.0 times that of cadmium nickel batteries. If it is found that the working time of the lithium-ion phone battery block you purchased is not as advertised or specified in the manual, it may be counterfeit.
When distinguishing between genuine and fake batteries, people often overlook a small detail, which is the contact pads of the battery. Because the contacts of various famous brands of real mobile phone batteries are mostly annealed, they should be matte rather than shiny, so based on this, the authenticity of mobile phone batteries can be preliminarily determined.
Additionally, it is important to carefully observe the color of the contacts. The contacts of fake mobile phone batteries are often made of copper, so their color may turn red or white. However, real mobile phone batteries should be pure golden yellow, and any red or white color could be fake.
The above is the product identification method for lithium batteries introduced to everyone. Using fake lithium batteries may require frequent charging due to low battery capacity, and counterfeit and inferior lithium batteries may also explode. Therefore, when purchasing lithium batteries, users must beware of unscrupulous merchants replacing the batteries and carefully check the authenticity of the batteries in the packaging box.
