Mobile power occasionally inevitable birth relative, if you don't have a smart phone power-hungry, and if there are no cell phones in order to thin do not replace the battery, if there is no handheld Internet devices increases, then the power does not appear. Mobile power in many people's minds is a simple accessory products, in addition to emergency charging as if nothing too many features can be used. However, a lot of battery explosion and make this simple accessory products to consumers at the time of purchase there is fear. Just Cavalli iPad case
For the market as a whole, regular brands of mobile power supply is completely secure, leak liquid, bulging, even fire power is found in the quality of products in particular batteries and circuit there is no guarantee that cottage on the quality of the product. Most of the cottage is not responsible for the products exists, using poor quality batteries, capacity deficiency, output virtual circuit quality problem has affected the quality of the products of high quality.
Question one: cheap batteries
18650 batteries for mobile power supply using insulating layer usually printed on battery capacity, production batches or brands. Shanzhai mobile power used by poor quality batteries, the insulation does not have any annotations.
Cheap low price without batteries
Mobile power supply battery low, quick loss is caused by the use of poor-quality batteries. Normal mobile power marked the real power of power of 60%, compared with 40% in the actual power of inferior products may even lower. Bad batteries in terms of performance, such as discharge stability and real life there was an obvious gap.
https://www.youtube.com/watch?v=BISfMD-fk6I
Remove electrical and mechanical dismantling of core appearance will inevitably leave traces
Quality assurance of mobile power batteries, look clean and clear
As a kind of poor-quality batteries, used split electro-mechanical component of the core is shanzhai mobile power often use. Relative to the three poor-quality batteries, used split mechanical and electrical conductor, as its main source for foreign garbage notebook, so the batteries mark on the normality of is complete. But as has been used for a long time, so the cycles, is no guarantee that the output stability.
Problem two: capacity deficiency
Capacity deficiency the problem is not merely the absence of fake products, even many famous brands of mobile power will play this trick.
A brand called 12000mAh mobile power
More common 18650 batteries currently available capacities are usually above 2000mAh. Some manufacturers in order to pursue the maximization of profit, typically use lower-capacity batteries to pose as high capacity batteries, which means internal batteries less total capacity than manufacturer in mobile power capacity values as declared on the packaging.
Four-section 18650 batteries 10544mAh for power tagging 10000mAh ensure sufficient capacity Just Cavalli iPad Mini Case
Also cause capacity deficiency problems is to use inferior and secondary batteries, because its battery capacity is not enough, so even if the battery nominal capacity beyond the parameters of mobile power supply capacity, the actual battery capacity is still not up to its nominal values advocated by the mobile power.
Remove electrical cores are more prone to ageing, resulting in decreased battery capacity
Consumers cannot be cheap, buy no guarantee that cottage brand, essentially to prevent the capacity deficiency damage to their own interests. That normal 18650 batteries is not a lot of difference in the price, so a super low price bulk product for mobile power supply is basically empty sign.
Source: Zol
Problem three: output empty sign
Some nominal output parameters of 5V/2.1A, actually in the case of 2.1A, it can only provide voltage of 3V or less.
Output there is deficiency of mobile power discharge curve
For mobile power supply, output current and output voltage is charging efficiency of the two most important factors in the output voltage, most products are marked on the nameplate for 5 v, but the reason because the charging wire and interface, it is difficult to achieve true 5V output, usually between the actual output voltage is 4.5V-5.3V is normal.
An ideal output discharge curve
If power were not in its nominal parameters provides ample output capacity, then, this mobile power when in actual use appears slow to charge or not filled in. Output deficiency relatively invisible, many consumers are not aware of. And output empty sign for manufacturers to reduce costs, and improve power conversion in a disguised form, and its professional is easy to present on the instrument.
Question four: circuit quality
Mobile power internal circuit boards are responsible for an important part of energy conversion. Judge a mobile power supply materials and workmanship the most simple way is to see its internal circuit board welding process and layout, and quality of components.
Rough internal circuit boards of mobile power
As mobile power is another core component, circuit board mostly bears seems more important tasks: the management of battery charging and discharging. Offers a wide variety of protection, fully automatic adjustment. Prevent damage to batteries on the one hand, on the other hand nature is to protect the safety of users to charge mobile phones and other devices. Such as mobile power is full, it automatically turns off charging.
Structured materials for solid workmanship dismantling of mobile power compactor
Structured materials for solid workmanship dismantling of mobile power compactor
Many shanzhai mobile power in addition to poor-quality batteries, capacity deficiency, a fuss at the PCBA on the Protection Board, Jerry, ills. To the user device, or even a serious security risk to security of person.
Summary: mobile power quality is consumer recognition more difficult, and buy well-known brands of mobile power is more insurance choices. Buy brand mobile power when many quality certification is more conducive to consumer understanding of product quality.
Now mobile power, generally without 3C, but its portable Chargers must have 3C certification. While many mobile power products are to be exported to Europe and the United States, its identity has FCC,ROHS, and CE certification, these certifications to product quality and safety certification. Therefore, with this type of certification of product quality is relatively good.
Source: Zol
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