Running nearly a month late because of work to repair a damaged cable, a Russian Soyuz spacecraft was primed for launch early Wednesday to carry two cosmonauts and a NASA astronaut to the International Space Station, boosting the lab’s crew back to six.

The last of Japan’s current series of HTV cargo freighters arrived at the International Space Station Monday with a fresh set of lithium-ion batteries, ready for installation on the research lab’s solar power truss after the scheduled docking of a two-man crew on a SpaceX Dragon spaceship later this week.

SpaceX’s Falcon 9 rocket will go from Cape Canaveral to low Earth orbit in less than 10 minutes Wednesday with a Dragon capsule heading for the International Space Station carrying more than 5,600 pounds of supplies and experiments.