Ultra capacity denotes a class of electrochemical capacitors that bridge the gap between electrolytic capacitors and rechargeable batteries. These devices achieve massive capacitance values, often measured in hundreds or thousands of farads, by using porous carbon electrodes and an electrolyte to create an extremely thin electric double layer. They are deployed in systems requiring rapid charge and discharge cycles, such as regenerative braking or memory backup power.
We replaced the coin cell with a UC to keep the real-time clock running during battery swaps without ever needing replacement.
Also heard as
- ultracapacitor
- supercapacitor
Related terms
Capacitor
A passive two-terminal component that stores electrical energy in an electric field.
Electrolytic capacitor
A polarized capacitor that uses a chemical electrolyte to achieve high capacitance.
Battery-backed
Describing a volatile memory or real-time clock circuit that uses a small local battery to retain data when main power is lost.