During the Expedition 59 mission to the International Space Station, astronauts are doing a series of three spacewalks.
On March 22, 2019, NASA astronauts Anne McClain and Nick Hague took a spacewalk to replace some aging nickel-hydrogen batteries with new lithium-ion batteries. One week later on March 29, Hague and NASA astronaut Christina Koch did similar work on their spacewalk together, replacing a second set batteries.
https://www.space.com/amazing-spacewalk-photos-space-station-expedition-59.html