The voltage of a mobile phone charger is generally 5V, which is also the voltage used by the USB interface. On the market, some mobile phone chargers may have an additional voltage output, such as 9V or 12V, because some phones support fast charging technology and require higher voltage for charging.
A voltage of 5V can be accepted by most mobile phones and maintains a safe and stable charging environment. High voltage may cause the battery to overheat, affecting its lifespan and safety. Therefore, using a suitable voltage mobile phone charger is recommended, especially using an original charger.
Also note that if the current output of the mobile phone charger is insufficient, it may affect the charging speed. Therefore, they often prompt the need to use at least 2A output current. If you are considering purchasing a new phone charger, please make sure to check its output voltage and current to ensure compatibility with your phone while providing fast and safe charging.
