SECH ultracapacitors combine the latest research from materials science with innovative and patented manufacturing processes. This results in products with properties that have not yet found their match. SECH ultracapacitors present a very high energy and power density compared to rival products. The manufacturing in China allows us to offer our customers products with a good cost-performance ratio.
All ultracapacitors have a nominal single cell voltage of 3.0V. They are available in the industry standard dimensions with capacities ranging from 3 to 3400F.
Our cells feature energy densities of up to 8Wh/kg and a power density of up to 38kW/kg. Therefore, the cells can be run with little loss and thus efficiently even with high charging and discharging currents.
All ultracapacitors fulfil the testing requirements of the norms ISO 16750-3 and SAE 2464.

SECH hybrid ultracapacitor (HUC) cells represent a quantum leap in energy storage cell technology. 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. HUC cells are ideal for applications that require fast charges in up to 5 minutes.
All HUC cells can be operated in a voltage range of 2.8 up to 4.2V. They are available in an industry standard dimension with capacities of 5Ah and 6Ah. Our cells feature energy densities of up to 77Wh/kg along with very low internal resistance. The cells can be charged/discharged with currents of up to 50C/80C. They achieve >50k cycles at 10C.