Complex sentence: Supercapacitors have the highest capacitance values per unit volume and have the greatest energy density of all capacitors, reaching 12,000 F/1.2 V, with capacitance values up to 10,000 times that of electrolytic capacitors.
Split into simpler sentences: Supercapacitors have the highest capacitance values per unit volume and have the greatest energy density of all capacitors. Supercapacitors are manufactured with capacitance values up to 12,000 F/1.2 V, having specific capacitance values up to 10,000 times that of electrolytic capacitors.