<p>Switched capacitor techniques provide a simple way to achieve high voltage levels using minimal DC sources. They efficiently store and transfer energy through capacitors. However, designing high-voltage multilevel inverters with fewer switches and sources remains challenging. This paper proposes a scalable high-gain switched capacitor multilevel inverter (HGSC-MLI) to address this issue. The proposed inverter produces nine output levels with four times the input voltage. It requires only a DC source, two capacitors, two diodes, and nine switches, significantly reducing the overall hardware count. Additional voltage levels and higher gains can be achieved by adding switched capacitor units (SCUs), each containing one capacitor, one diode, and two switches. The design includes a self-balancing mechanism for capacitor voltages, eliminating the need for external sensors. Comparisons with existing topologies show that the proposed HGSC-MLI has better voltage boosting capability and fewer components. Simulation and experimental results from a laboratory-scale prototype validate the feasibility and effectiveness of the design.</p>