Expedition 61 Flight
Engineers Christina Koch and Andrew Morgan of NASA completed a seven-hour
and one minute spacewalk on Sunday. The two astronauts began the replacement of
nickel-hydrogen batteries with newer, more powerful lithium-ion
batteries on the far end of the station’s port truss.
The crew was so
efficient that they were also able to accomplish get-ahead tasks, including the
removal of an additional nickel-hydrogen battery, originally scheduled for an
batteries provide an improved power capacity for operations with a lighter mass
and a smaller volume than the nickel-hydrogen batteries. On Oct. 11, Morgan and
Koch are scheduled to venture outside again for another spacewalk to
continue the battery replacements on the first of the two power channels for
the station’s far port truss. The next spacewalks dedicated to the battery
upgrades are scheduled on Oct. 11, 16, 21 and 25.