A storage device refers to a device or system that can store electrical power, such as batteries or capacitors, and release it after a certain period of time. This document is a collection of basic knowledge explaining electric double-layer capacitors, covering their effects and principles, comparisons with other storage devices like batteries, and applications of large-capacity capacitors. It is a resource that provides foundational knowledge about capacitors that you may have been hesitant to ask about, so please feel free to contact us. [Contents (excerpt)] ■ What is an electric double-layer capacitor (EDLC)? ■ Principles and characteristics of electric double-layer capacitors ■ Comparison with other storage devices, etc. *For more details, please refer to the PDF document or feel free to contact us.