The 4.25V 21000F Supercapacitor is a high-performance energy storage solution designed for demanding audio amplifier applications. Featuring a massive 21000F capacitance, ultra-low ESR (1mΩ), and a wide operating temperature range (-20°C to +65°C), this supercapacitor ensures stable, efficient power delivery with rapid charge times (30 minutes). Built with advanced graphene materials, it offers exceptional durability, safety, and long lifecycle performance. Ideal for high-fidelity audio systems and professional sound equipment, this supercapacitor enhances dynamic response and minimizes power loss. Compliant with RoHS, CE, and ISO9000 standards, it is available in customizable configurations for global B2B integration.More