The design of CMOS-process-compatible solid-state glucose fuel cells intended for integrated circuits remains challenging due to the low output power. To this end, we developed an electrical equivalent circuit model to estimate the equivalent electrical properties of a CMOS-process-compatible glucose fuel cell of 5 mm x 5 mm area by considering the voltage measurement results using single-walled carbon nanotubes (SWCNTs). The electrical properties, internal resistance, and capacitance of the equivalent circuit model of the fuel cell were evaluated, to serve as a basis for the design of integrated circuits wherein CMOS-process-compatible glucose fuel cells are used as a power supply. The maximum time constant is estimated to be 50 ms by fitting a curve to the measured voltage from the transient measurement result. The electrical properties, internal resistance (1.94 k Omega), and equivalent capacitance (25.8 mu F) determined using this model will be beneficial for the design of integrated circuits wherein such biofuel cells are employed to supply power.