Preparing the exposed facility for experiment transfers and replace two out of the six batteries (four were planned) on the port side truss where they are housed to provide power for the truss.

Replacing the final four batteries on the port truss.

Removing covers from the Dextre robotic arm, reconfigure cables on a panel for some circuit breakers and deploy two additional payload attachment systems. They also installed a second camera that will provide video of experiments on the aft end of the exposed facility, a work, which was originally scheduled for EVA 4. Finally, they replaced an aging camera system on the starboard truss. Instead some get ahead tasks were completed which included installation of handrails and a portable foot restraint.

Inspection and replacement of a pump controller box on the station’s far port truss (P6) suspected of leaking ammonia coolant.

The astronauts replaced a space-to-ground communications receiver and wireless video equipment and installed power and cables for a Russian multipurpose laboratory module that will be launched later in 2013. The new module will serve as a research facility, docking port and airlock for future Russian spacewalks and will replace the Pirs module.

The spacewalk was terminated after just one hour due to an unexplained build up of water inside the space suit helmet of European Space Agency astronaut Luca Parmitano.