Spacewalkers Successfully Complete Battery Installation

We now are 1 hours, 27 minutes into today's spacewalk. Grunsfeld and Feustel have successfully completed the battery installation task. They next will remove and replace one of Hubble's three Fine Guidance Sensors, FGS-2. To remove the old sensor, Grunsfeld and Feustel will work together to unhook nine connectors. Then Grunsfeld will release one latch and install a handle on the equipment that he’ll use to carefully lift the sensor out of the telescope. He’ll carry it to a protective enclosure inside the shuttle’s cargo bay, where Feustel will be waiting to assist him in storing it and removing the new sensor. More

(Source: NASA - May 18)