40pcs 3x6 Solar Cells Kit w/ Tabbing Bus Wire & J-box for DIY 80W Solar Panel tabbing wire (connecting all the solar cells in serise, to solar array .we call it is bridging so the power current can go through smoothly) bus wire( connecting all the solar cell array to a whole solar panel, we call bussing) Flux pen ( To help the tabbing wire and bus wire are soldered well onto the solar cell) Encapsulation kits (A&B), when you connected all the solar cells well, you need to use encapsulation or glass to protect the solar cell, the solar cell is fragile and easy oxidized, encapsulation kits protect the solar cell from oxyging and broken) Diode ( anti the power current go back to GEL battery at night)