Vishay Mal222591008E3.
DOUBLE LAYER CAPACITOR, 50F, 2.7V, RAD; Capacitance:50F; Voltage Rating:2.7V; Capacitor Terminals:Radial Leaded; Product Range:ENYCAP 225 EDLC-R Series; Capacitance Tolerance:+50%, -20%; Lead Spacing:7.5mm; ESR:0.01ohm; Diameter:18mm