Abstract: Systems, apparatuses, and techniques are described for controlling an energy storage device, such as a high-voltage capacitor, using a power based current control profile. Examples are described which comprise a control circuit comprising a power management integrated circuit (PMIC) and a system power and performance control (SPC) circuit. The PMIC may detect and characterize a fixed maximum power limit for a power source. The PMIC may further regulate the transfer of power, from a power source and/or the energy storage device, to a plurality of system loads. The SPC circuit may regulate the charging and/or discharging of the energy storage device based on a power based current control profile. The charging and/or discharging of the energy storage device may be controlled by the SPC as a function of an instantaneous power-gap between the dynamic system loading power and the fixed maximum power limit detected for the power source.