However, subjecting capacitors to overvoltage conditions can have detrimental effects on their performance, longevity, and safety. Overvoltage on capacitors can lead to dielectric breakdown, insulation failure, capacitor damage, reduced lifespan, and altered capacitance and. . The basic end-of-life failure mode for a supercapacitor is an increase in equivalent series resistance (ESR) and/or a decrease in capacitance. The actual end-of-life criteria are dependent on the application requirements. Prolonged exposure to elevated temperatures, high applied voltage and. . Supercapacitors (SC) usually operate at low voltages of around 2. SAB MOSFET 1, or M1, is connected across C, so input VIN1 of the SAB MOSFET is equ otice the equation, which states: V+ is equal to VIN1 + VIN2 = VC1 + VC2. By my calculation, a 500F capacitor can charge from 0.