Smartphone charger: Polymer batteries are more secure than 18650 batteries?

- Oct 23, 2017-

Common misunderstanding


The configuration of smart phone is getting higher and higher, while there hasn’t been any progress on the battery technology. At this time, smarttphone charger has become very important. And as the smartphone charger products in the market are varied, all manufacturers are constantly instilling a variety of concepts to consumers in order to promote their own products. So, can we still keep a clear mind and rationally choose smartphone chargers? Here I would like to show some common errors while purchasing smartphone charger. 


Authority of test reports


There are no national unified certification standards for smartphone chargers yet. The projects to be tested in so-called test reports for all brands till 2013 are negotiating between third-party agencies and enterprises. So the test report does not necessarily indicate that the product is qualified. At least we can clearly get the gold content of the product from the analysis of the most important technical indicators of smartphone charger, the discharge curve.


Polymer batteries are safer than 18650 batteries


Many people must have heard of this argument: 18650 batteries have the risk of explosion, while the worst case of the polymer battery is fire breakout, it will not explode, so the polymer batteries are more secure than 18650 batteries. In fact, it is theoretically true, but the reality is not the case. 18650 batteries are covered with steel, not easy to deform. Its process has been very mature after long-term development. The probability of explosion is very low. However, although polymer batteries are theoretically more secure, the technical difficulty is really big and the production requirements for manufacturers are high because of the paste lithium ion inside the batteries and the external use of aluminum-plastic film packaging which is soft, easy to deform and intolerant,. At present, domestic manufacturers which can produce high-quality polymer batteries are few. The overvoltage protection adopted by different manufacturers varies widely, so in the domestic market, polymer battery cell is not necessarily more secure than 18650 battery. 


The bigger the capacity is, the better the smartphone charger is.


As the capacity is the most important parameter that affects the smartphone charger’s using time, many people think that the larger the capacity of smartphone charger is, the better the smartphone charger is. So, is this the truth? The capacity of the smartphone charger is proportional to its volume. The larger the capacity is, certainly the bigger the volume is. Therefore, we should purchase according to our own needs. If not often travel, there is no need to take a "brick" everywhere. In addition, the phenomenon of the virtual standard in the market is still very serious. Poor manufacturers blinded consumers with high capacity, while the actual capacity of the product is much lower than the marked capacity, so we cannot easily believe these large capacity smartphone chargers.


Whether it would cause damage


Many friends are worried that the use of smartphone charger will cause damage to mobile phones and tablet PCs. In fact, using smartphone charger is the same as we use the mobile phone tablet and other portable adapter to charge, so it will not cause damage to the device. Of course, if you encounter some low-quality smartphone charger which cannot provides stable voltage and current for mobile phones and flat, it will do harm to these digital devices. Therefore, when purchasing smartphone charger, we must select some well-known manufacturers, so as to effectively protect the safety of equipment. Here I recommend Shenzhen Wanshuntong Science & Technology CO., LTD, which has been in this field for 18 years. Not only does it have its own brand, but also have strict quality control. WST products are top seller in many platforms domestic and overseas. Anyway, choosing a big brand can largely guarantee your safety.

Samrtphone charger.jpg