CAPE CANAVERAL, Fla. (AP) — A pair of spacewalking astronauts successfully wrapped up battery improvements outside the International Space Station on Monday, completing a job begun last fall.

NASA's Jessica Meir and Christina Koch installed the last new battery in a set of six launched to the orbiting lab in September. They also removed two old batteries in their second spacewalk in under a week to upgrade the station's solar power grid.

This marked the women's third spacewalk together. They conducted the world's first all-female spacewalk last October, replacing a failed charging device that...