Apollo Service Module Battery Control Box. Unit measures 4.5 x 4 x 12.5, has male and female connectors on each end and mounting brackets near the bottom. Manufacturer’s label affixed to the top reads, in part: “Box Assembly-Fuel Cell/Aux., Battery Control. Part V37-458070, Serial: AAJ9424.” In fine condition. Two of these were incorporated into the Service Module with an additional battery (commencing with Apollo 14) as a result of lessons learned from Apollo 13 to supplement existing electrical power storage in the event of a catastrophic loss of electrical power generation capacity. RR Auction COA.
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