Electric Double Layer EVerCAP® Supercapacitors Nichicon Electric Double Layer EVerCAP® (EDLC) Supercapacitors (EDLC) offer high capacitance, low resistance, and longer life. Nichicon EVerCAP is capable of over a million charge/discharge cycles. The operating temperature range (-40°C or -25°C to +60°C or +70°C) is wider than batteries. These capacitors offer excellent charge/discharge efficiency and are capable of fully discharging to 0V.