8.1 Introduction8.2 Power Source: Photovoltaic Solar Cells and Solar Array8.3 Energy Storage: Lithium-ion Batteries8.4 SA-battery Power Conditioning: DET and MPPT8.5 Battery Charging Control Loops8.6 Bus Power Conditioning and Distribution: Load Converters and Distribution Switches8.7 Flight Switch Subsystem8.8 DC/DC Converters8.9 Power System Sizing: Power Budget, Solar Array, and Battery Selection8.10 ConclusionsReferences