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为更换国际太空站太阳能动力系统的老旧电池，2名太空人10月6日完成太空漫步，7小时内装上两枚新的锂离子电池，并搬走一枚旧式电池，过程顺利。

这批新电池是太空站太阳能动力网的组件，重180公斤，体积等于半个电冰箱。太空人自2017年起升级电池系统，目前进度过半。

这一波换电池行动，因为地点在太空站庞大外壳的极限位置，所以特别困难。太空站长17公尺的机械臂无法伸到那里，太空人不得自己搬电池往返。

也因为如此，这次要用6枚锂离子电池取代12枚旧式镍氢电池，才要这么久的太空漫步。

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