In general, it is OK to use 25W chargers for devices that support 15W fast charging, but the output power of the charger does not affect the charging speed of the device, because the device will adjust the charging current and voltage according to its own charging circuit. If the charging circuit of the device only supports 15W fast charging, then when using the 25W charger, the device will still only accept the maximum 15W charging power, so the charging speed will not be faster. However, the use of higher power chargers may have a certain impact on the battery life of the device, so it is recommended to choose the same power as the original charger of the device or slightly higher charger when using the charger.
Fast charging refers to a fast charging technology that improves the charging speed by adjusting the output voltage, current and receiving circuit of the charging device, thereby shortening the charging time of the device. Fast Charge technology is usually developed by mobile phone manufacturers, chip manufacturers or charger manufacturers, and there are differences between different fast charge technologies, such as Huawei's SuperCharge, OPPO's VOOC fast Charge, and Qualcomm's Quick Charge. Fast charging technology requires compatible chargers and devices to achieve fast charging, so you need to use the appropriate charger and device to enjoy the convenience of fast charging.
The 15W charger can charge 25w mobile phones. What can be charged is nothing more than charging faster than slow, not the original can also be charged, because the rated power and rated voltage of 15 watts fast charge are smaller than the rated power and rated voltage of 25 watts mobile phone.
So when using a 15-watt fast charge to charge a 25-watt mobile phone, it will only slow down the charging speed of the mobile phone without damaging the mobile phone battery, so a 15-watt fast charge can charge a 25-watt mobile phone.
Under normal circumstances, 15w fast charge can be charged with 25w charger. Under normal circumstances, devices that support the 15 watt fast charge protocol, if the fast charge protocol matches, the use of 25 watt charger can also be fast charged, even if the fast charge protocol does not match, you can also charge 10 watts of power.
Yes, but not as fast as 25W