DKA Electric Double Layer Capacitor Chemi-Con DKA Series Electric Double Layer Capacitor (EDLC) is designed for backup power applications. The capacitor offers very low direct current internal resistance (DCIR) at low and high temperatures. The capacitor is rated at 2.5V, has a capacitance value of 50F, and offers 1000 hours of operation at +70°C. Chemi-Con DKA Series EDLC applications include emergency power system (EPS) backup, memory backup, and battery backup.