Spacewalking Astronauts Replace Old Batteries on Space Station

NASA astronauts Nick Hague and Christina Koch successfully completed a spacewalk at the International Space Station today to continue an ongoing power upgrade at the orbiting lab. The spacewalkers spent 6 hours and 45 minutes working to replace a set of old nickel-hydrogen batteries with new lithium-ion batteries located on the station's P4 truss, where one of the station's solar arrays is located. These batteries hold the charge generated by the solar arrays and power the space station when it's not in direct sunlight. More

(Source: Space.com - Mar 30)