The charging power supported by the mobile phone is generally determined by the following factors: the hardware design of the mobile phone (including the charging chip, the battery control chip, etc.), the quality and specifications of the charging line, and the power of the charging head. Therefore, the charging power supported by the mobile phone 66W May also be affected by these factors, and may not be able to reach the maximum 66W. Specific to the case of only 15W charge, may be due to the following reasons:
1. The power of the charging head is insufficient. For example, the power of the original charging head is only 15W, which cannot support higher power fast charging, or the non-original charging head uses a chip that is lower than the phone needs.
2. The quality of the charging cable is poor. When using a poor quality charging cable, there may be problems with data transmission, resulting in the fast charge power not reaching the maximum supported by the phone.
Of course you can. 66W Fast charge means that the maximum output power of the charger or charging bank is 66W. This means it can provide up to 66W of fast charging for compatible electronic devices. When you use a 66W charger to charge a device that only supports 15W charging, such as some smartphones and tablets, the charger automatically recognizes the charging needs of the device and adjusts the output power. In this case, the charger will limit the output power to 15W instead of charging at full speed of 66W.
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In short, the 66W fast charge can be backward compatible with 15W devices and provide them with an appropriate charging speed. However, please note that for the best performance and protection of the device, it is recommended to use an original or compatible charger with the device.
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Yes, high-power banks are generally low-power compatible.
Therefore, 66W can charge 18W mobile phones, and the highest will be maintained at about 18W, which can be used normally. When charging with a non-original charger or a charging bank of a different brand, the input power is still 18w, no matter how many w fast charges the phone supports.