SECH ultracapacitors, also known as supercapacitors, are energy storage devices that can store and deliver energy very fast and with a high efficiency. They present a high energy and unmatched power density, are very secure and reliable for use in a wide temperature range, present a long lifespan and can be charged and discharged many hundreds of thousands of times without remarkable output loss. SECH products include cells, modules and systems.

SECH hybrid ultracapacitor (HUC) cells combine the characteristics of an ultracapacitor with that of a lithium battery to create a durable and ultra-fast high energy storage cell that can be charged and discharged in seconds. They present a battery-like energy density and an ultracapacitor-like power density, are very durable for use in demanding environments and can be charged and discharged tens of thousands of times without remarkable output loss at high currents.