Is the quality of the charging treasure you bought qualified?
Recently released by the State Administration for Market Regulation
National supervision and random inspection of electronic product quality in 2021
The bulletin shows that
The found rate of non-conformity of mobile power supply is 25%.
State supervision and random inspection of mobile power supply products in the past 3 years (source: State Administration for Market Regulation)
Mobile power supply, commonly known as "charging treasure". This time, a random inspection of 108 batches of mobile power products produced by 107 enterprises found that 27 batches of products were unqualified, and the unqualified discovery rate was 25%. In the past three years, the unqualified detection rate of the product under the national supervision and random inspection was 39.7%, 19.8% and 25%, respectively.
This spot check focused on 16 items such as heat generation requirements, effective output capacity at room temperature, conversion efficiency, short circuit protection, overload protection, overcharge, and heavy object impact. According to the analysis of technical institutions, unqualified projects such as overcharging and thermal abuse may lead to risks such as overheating, fire and explosion of the product, and there are potential safety hazards.
How to pick it
Safe charging treasure?
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Pay attention to these when choosing a charging treasure!
1. Battery cell
Now the market batteries are generally divided into two kinds: lithium polymer batteries and 18650 lithium batteries, polymer batteries because there is no liquid so it will not explode at high temperature, but 18650 lithium batteries have the possibility of explosion, so pay special attention when purchasing.
2. Capacity
5000 mAh charging treasure is enough for a smart phone to use, but most people are pursuing large capacity, but the larger the capacity, the greater the manufacturing cost, the higher the technical level requirements, and the more likely to have quality problems.
And now many of the large-capacity charging treasures sold are false electricity, and the purchase needs to be cautious and try to buy big brands.
3. Conversion power
If the efficiency conversion rate of the mobile charging treasure is below 80%, the loss is very large, and the heat generation itself is also large, which means that the efficiency is very low and there may be security risks.
Pay attention to these when using the power bank!
1, do not squeeze, shake the charging treasure
Squeezing can cause damage to the internal structure of the lithium battery, resulting in a short circuit, and if the battery or circuit board is inferior, it may also explode, as well as throwing and shaking violently.
Try to separate the charging treasure and other metal small objects, if you accidentally insert the USB output port, it is easy to cause a short circuit in the power supply.
2, do not put in high temperature, humid place
The temperature is too high or too low will have an impact on the charging treasure, especially in the summer, to avoid long-term exposure to the sun, and do not leave the charging treasure in the high temperature, closed car, spontaneous combustion may occur.
3. Avoid overcharging and retain a little power when not in use
After full charge, unplug the charging treasure as soon as possible, if it is an inferior charging treasure, the discharge charge is not fully protected, it may cause an explosion.
In addition, it is best to retain half of the power when idle, and try to charge and discharge once a month to extend the service life.
(Source: Visual China)
4. Do not charge with the charger of the tablet
The tablet charger is larger than the input specification of the charging treasure, and long-term use will cause the charging treasure to be unable to charge, and even cause a fire due to overload, so it is best to use the original and matching charger.
5, do not disassemble and transform the charging treasure without permission
The power supply contains ingredients that are harmful to the human body, and the disassembly process will cause discomfort to the human body and may even damage the eyes.
In addition, when the lithium battery electrolyte encounters a large amount of water, it will quickly dissipate heat, causing an explosion, so do not disassemble it because of curiosity.
6, bad charging treasure is no longer used
If there is discoloration, deformation, leakage, and it is easy to be hot, but it can still be charged, it is necessary to stop using it immediately, and there is a great safety hazard in the corrosion and flammability of the electrolyte.
Long knowledge!
When everyone usually chooses and uses the charging treasure,
Be sure to pay attention to Oh~
Source: Xinhua News Agency, Science Popularization China
Editor-in-Charge: Sihua Zhao
Editor: Wu Yinlin