A photovoltaic powered system with an adaptive power control generating a DC voltage (Vpv) and a DC current (Ipv) through a photovoltaic panel, the DC voltage (Vpv) and the DC current (Ipv) controlled to provide an electric power to supply a load; the photovoltaic powered system comprising: a charging control unit electrically connected to the photovoltaic panel; a rechargeable battery unit electrically connected to the photovoltaic panel and the charging control unit; a first switch unit electrically connected to the photovoltaic panel; a second switch unit electrically connected to the charging control unit and the rechargeable battery unit; a power condition unit electrically connected to the photovoltaic panel, the first switch unit, and the second switch unit; and a switch control unit electrically connected to the photovoltaic panel, the first switch unit, and the second switch unit; the switch control unit receiving the DC voltage (Vpv) and the DC current (Ipv) generated from the photovoltaic panel; wherein the electric power generated from the photovoltaic panel is regulated to supply the load by the power condition unit and the electric power generated from the photovoltaic panel is controlled to charge the rechargeable battery unit by the charging control unit, the switch control unit turns on the first switch unit and turns off the second switch unit when the photovoltaic panel can provide the electric power; wherein the electric power stored in the rechargeable battery unit is regulated to supply the load by the power condition unit, the switch control unit turns off the first switch unit and turns on the second switch unit when the photovoltaic panel cannot provide the electric power, characterized in that the switch control unit is configured to produce a first control signal and a second control signal to turn on/off the first switch unit and the second switch unit, respectively, wherein the first control signal and the second control signal are complementary-level signals. a charging control unit electrically connected to the photovoltaic panel; a rechargeable battery unit electrically connected to the photovoltaic panel and the charging control unit; a first switch unit electrically connected to the photovoltaic panel; a second switch unit electrically connected to the charging control unit and the rechargeable battery unit; a power condition unit electrically connected to the photovoltaic panel, the first switch unit, and the second switch unit; and a switch control unit electrically connected to the photovoltaic panel, the first switch unit, and the second switch unit; the switch control unit receiving the DC voltage (Vpv) and the DC current (Ipv) generated from the photovoltaic panel; wherein the electric power generated from the photovoltaic panel is regulated to supply the load by the power condition unit and the electric power generated from the photovoltaic panel is controlled to charge the rechargeable battery unit by the charging control unit, the switch control unit turns on the first switch unit and turns off the second switch unit when the photovoltaic panel can provide the electric power; wherein the electric power stored in the rechargeable battery unit is regulated to supply the load by the power condition unit, the switch control unit turns off the first switch unit and turns on the second switch unit when the photovoltaic panel cannot provide the electric power, characterized in that the switch control unit is configured to produce a first control signal and a second control signal to turn on/off the first switch unit and the second switch unit, respectively, wherein the first control signal and the second control signal are complementary-level signals.