Connect a Voltaic solar panel to a breadboard or other custom connector. Female 3.5x1.1mm connection on one end, tinned positive and negative cables on the other. Cable is 21 inches (53 cm).
Super strong Neodymium (NdFeB) magnets with 4/40 internal screw thread attach right onto any Voltaic solar panel with corner screws (2, 3.5, 6, 9 and 17 Watt solar panels).