Power supply adapter capable of charging directly

The invention discloses a power supply adapter capable of charging directly, which comprises a charging interface, an AC-DC conversion unit and a control unit. The power supply adapter capable of charging directly performs timing communication with a mobile terminal acting as a charging object so as to acquire voltage variations of a battery inside an electronic product, then dynamically adjusts charging voltage outputted by the power supply adapter according to the voltage variations of the battery, and carries out direct charging on the built-in battery of the electronic product by using the charging voltage, thereby realizing great improvement in charging current, accelerating the charging speed of the battery, and shortening the time required by one-time charging of the electronic product. Therefore, inconvenience brought about by frequent and long-time charging of the electronic product for daily use of users can be reduced, and the satisfaction degree of the users in use is improved to a great extent.