They installed the adapter plates for the new batteries and to replace nickel-hydrogen batteries with newer, more powerful lithium-ion batteries for the power channel on one pair of the station's solar arrays.

The astronauts laid out jumper cables between the Unity module and the S0 truss. They also installed cables to provide for more expansive wireless communications coverage outside the orbital complex.

They installed a modification kit on the port side of the station's truss structure enabling the future installation of the orbiting lab's seventh iROSA (International Space Station Roll Out Solar Arrays). They also relocated an antenna that communicates with approaching and departing commercial crew and cargo spacecraft.