![Battery Module Assembly with lid removed, showing the cells and power isolation switches Battery Module Assembly with lid removed, showing the cells and power isolation switches](../art/multimedia2/instruments/tn/223009main_Batt_FS_img1_100.jpg)
Battery Module Assembly with lid removed, showing the cells and power isolation switches
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![Original Battery Module Assembly installed on Hubble in Bay 2 Original Battery Module Assembly installed on Hubble in Bay 2](../art/multimedia2/instruments/tn/222770main_Batteries_FS_img2_100x80.jpg)
Original Battery Module Assembly installed on Hubble in Bay 2
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![](../art/multimedia/missionprep/266791main_batteries_100x75.jpg)
In the NBL,astronaut Andrew Feustel practices installing new battery modules on the HST
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![](../art/multimedia/missionprep/nbl-battery-drill-100.jpg)
At NBL astronauts practice using drill to remove batteries
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