On January 6, 2017, American astronauts Robert Kimbrough and Peggy Whitson performed the spacewalk to install three adapter plates in the electronics assembly and to connect them to the new Li-ion batteries. They also removed two more NiH2 batteries and mounted them on two of the adapter plates where they will remain in long-term storage. The spacewalkers completed their tasks an hour or so ahead of schedule, so flight controllers asked them to carry out three “get-ahead” tasks. The EVA lasted 6 hours and 32 minutes. It was the third EVA for Kimbrough and the seventh for Whitson.