Supercapacitors are used in applications requiring many rapid charge/discharge cycles, rather than long-term compact energy storage: in automobiles, buses, trains, cranes, and elevators they are used for regenerative braking, short-term energy storage, or burst-mode power. Supercapacitors are used in applications requiring many rapid charge/discharge cycles, rather than long-term compact energy storage: in automobiles, buses, trains, cranes, and elevators they are used for regenerative braking, short-term energy storage, or burst-mode power. The paper “ How to Manage Leakage Current and Self Discharge of EDLC Capacitors ” was presented by Gerald Tatschl, Vishay BCcomponents, Klagenfurt am Wörthersee, Austria at the 5 th PCNS Passive Components Networking Symposium 9-12 th September 2025, Seville, Spain as paper No. Electric. backup application to provide power to RTC circuit in electronics when the power source to the syste is disconnected. Self-discharge characteristics is one of the important char cteristics to determine the backup time. A supercapacitor (SC), also called an ultracapacitor, is a high-capacity capacitor, with a capacitance value much higher than solid-state capacitors but with lower voltage limits. It bridges the gap between electrolytic capacitors and rechargeable batteries. The voltmeter was connected to cap all the time during measurement? It would help if you. Abstract—The literature on the self-discharge of supercapacitors is reviewed, the advantages of electrochem-ical supercapacitors over batteries are formulated. A study of self-discharge of.