The 4.25V 21000F Supercapacitor is a high-capacity energy storage solution designed for electric-powered printing machines and other high-demand industrial applications. Featuring ultra-fast charging within 30 minutes, a long service life, and exceptional safety performance, this graphene-based supercapacitor delivers reliable power with low ESR (1mΩ) and stable operation between -20°C to +65°C. Ideal for renewable energy systems, backup power, and energy recovery, it provides efficient, sustainable energy storage compliant with RoHS, CE, and ISO9001 standards.More