The 4.25V 21000F Supercapacitor is a high-power energy storage solution designed for demanding applications such as LED street lighting systems. Featuring a high capacitance of 21000F, low ESR of 1mΩ, and a wide operating temperature range (-20°C to +65°C), this supercapacitor ensures reliable performance and long service life. Built with advanced graphene material technology, it offers rapid charging (30 minutes) and exceptional safety, making it ideal for renewable energy and smart grid applications. RoHS/CE/ISO9001 certified, this white or customized-color supercapacitor provides a sustainable, durable, and efficient power solution for modern energy systems.More