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Google warning: Try not to use non-standard USB charging

Date: 2024/10/22 12:50:25
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Introduction: Currently, there are many fast charging products on the market. Google recently released a document showing that it is best to use a standard Type-C charger to charge your phone. Using fast charging products may have an impact on the phone battery.

At present, there are many fast charging products on the market. Google recently released a document showing that it is best to use a standard Type-C charger to charge mobile phones. Using fast charging products may have an impact on mobile phone batteries.

The document states: "We strongly recommend that Type-C devices do not support fast charging proprietary charging methods, such as modifying default voltage standards or adjusting Sink/Source current logic, as this may affect chargers and devices that support standard USB Power Delivery charging methods. Although it is currently only a 'strong recommendation', in future Android versions, we may 'require' all Type-C devices to only support standard Type-C chargers." The Android market is now flooded with various fast charging technologies, such as Qualcomm Fast Charging, MediaTek Pump Express Fast Charging, and so on. Some fast charging technologies require special data cables instead of traditional chargers for fast charging, and due to different internal configurations and charging rates of each phone, if users mix devices, it may pose a safety hazard.

However, Qualcomm has clearly stated in its explanation of Qualcomm QC3.1 charging technology that mobile phone manufacturers can use fast charging technology to set charging voltage values compatible with the USB interface to be used, while also ensuring that the voltage value at that level can safely operate on the USB Type-C interface. This means that Qualcomm is not certain that using its Quick Charge 3.1 technology can use high voltage.

The Huawei phone PORSCHE DESIGN Mate 9, which has just been released overseas, adopts "SuperCharge". Huawei Charging Research Institute stated that its new technology is completely different from traditional fast charging. It introduces heteroatoms to change the graphite molecular structure of the negative electrode, which does not affect the energy density and service life of the battery. Therefore, it does not damage the battery during charging. Unlike Qualcomm and others who focus on charging protocols, Huawei has adopted a new approach that is similar to OPPO's.

It is reported that due to the Qualcomm QC 3.1 increasing the charging voltage to 9 volts or 12 volts, the charging time of HTC 10 and LG G5 is much faster than usual. However, according to the specifications of the USB Type-C 3.1 interface, the Vbus cable should maintain a voltage between 4.45-5.25 volts. As a result, the voltage required for Qualcomm QC 3.1 far exceeds the standard for USB Type-C cables - if the current passing through low specification cables is too high, the consequences can be unimaginable. So the USB 3.1 Type-C interface equipped on Google Nexus phones does not recommend using Qualcomm Fast Charge for charging. In theory, the standard 3A Type-C charger
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