Electronics manufacturers representative for Ohio, PA, IN, MI, WV and KY

Serving OH, MI, IN, W. PA, WV and KY

Ultracapacitors and the Difference between Power and Energy

Although it is common to use the terms power and energy interchangeably, they are not the same. Energy is the amount of work that can be done, while power is the rate at which energy is used to do that work. In other words, power is the amount of energy used per unit of time. The two are related according to the following formula:

Power * Time = Energy

As can be seen in the chart above, ultracapacitors, traditional capacitors, and batteries fall in different places on the scale of power versus energy density. Power density refers to how quickly a device can discharge its energy, while energy density refers to how much energy a device contains. Batteries have low power density but high energy density, meaning they have a lot of energy that gets discharged slowly. Traditional capacitors, on the other hand, have high power density but low energy density, meaning they have less energy but it can be discharged more quickly. Ultracapacitors fall somewhere in the middle, with high power density and medium energy density.

ESI is the local representative for Tecate Group. Tecate offers the broadest capacitor product lineup coupled with superb technical support. Tecate’s wide-ranging capacitor lineup makes it easy to find the product that fits your needs.

  • Supply large bursts of energy and recharge quickly
  • Extend battery run time and prevent declining charge capacity as the battery ages
  • Maintenance-free and operate over a wide temperature range
  • An array of cells covering a wide range of capacitance values and voltages
  • Custom configurations are available on request
  • Composed of industry-recognized cells and modules across a wide range of capacitance values and voltages
  • Manufactured to withstand elevated humidity and temperature applications
  • Custom configurations in both cells and modules are available on request
  • Broadest capacitor product line-up
  • Ceramic, film, aluminum electrolytic, conductive polymer or tantalum capacitors