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Spacewalking astronauts tackle battery, cable work

CAPE CANAVERAL, Fla. – Spacewalking astronauts are tackling battery and cable work outside the International Space Station.

It's the third spacewalk in just 2 1/2 weeks for the station crew.

NASA astronaut Anne McClain and Canadian astronaut David Saint-Jacques got an early start Monday morning. They need to complete battery swap-outs that began last month and lay cable.

The new cabling will provide a backup power circuit for the station's Canadian-made robot arm and expand wireless communications. The battery work involves re-installing two old batteries. One of the six new lithium-ion batteries doesn't work, and so the outdated pair made of nickel hydrogen need to go back into the slot.

NASA says it will send up another new battery.