Earlier, Artemyev and fellow cosmonaut Denis Matveev began their spacewalk from the ISS, they had to continue preparing the ERA manipulator for work.
"Oleg, this is a very low voltage, you definitely need to return. Therefore, if the battery runs out completely, it’s not only a pump and a fan, communication may be lost. And it’s impossible [to work] without communication,"a ground expert told Artemyev.
"Immediately go into the hatch and dock to the station," Vladimir Solovyov, the flight director of the Russian segment of the ISS, ordered.