Hi, I’m Jessica Liu, the Founder and co-owner of ietcharger.com, I’ve been running a factory in China that makes charger equipment for 11 years now, and the purpose of this article is to share with you the knowledge related to charger from a Chinese supplier’s perspective.
Because of the high-pressure sparking phenomenon caused by poor contact, pressing and sparking will oxidize the metal layer of the plug, leaving a layer of black substance after oxidation, which is oxidation.
The chargers seem to have the same function but often very big different at price. So why does this happen? Where is the different? What should we pay attention to when purchasing a charger?
Qc3.0 are 18w and 24w, in most of quick charge 3.0 is 18 watts, a few quick charge 3.0 is 24 watts, and the supported charging specifications are 9V2A, 5V3A, 5V2A and so on.
The chargers that have been certified (CE/RoHS/FCC/UL/GS etc) to meet the requirements of the national mandatory safety standards will generally not present the risk of electric shock under normal use.
whether the charger can be mixed to used, the first prerequisite is that charger (including usb cable) and devices support same protocol, also need to consider the power issue.
If want to find a charger manufacturer with guaranteed quality to cooperate, we need to find a trustworthy manufacturer, good reputation and quality must not be less.
If you strictly distinguish the description of the interface colors, it is clear that green represents Qualcomm QC, and purple represents Huawei fast charge. Other colors of charging interfaces are not clearly defined.
The phenomenon that the charger has a buzzing sound, the official said that this situation is generally caused by the vibration of a piezoelectric effect of a inside parts in the charger, and the frequency is relatively high, but this phenomenon has no safety hazard.