The HP-2R7-J405VYJ07 from Jinzhou Kaimei Power is a Supercapacitor with Capacitance 4000 mF, Voltage Rating 2.7 V, Equivalent Series Resistance 200 mOhms, Temperature Operating Range -40 to 70 Degree C. Tags: Through Hole. More details for HP-2R7-J405VYJ07 can be seen below.