Repair Bobblehead

The Repair Bobblehead is a miscellaneous item in Fallout 4 that permanently increases the duration of fusion cores by 10%.

Location
It can be found at the Corvega assembly plant on the very end of the top exterior gantry. It is located on the southwest roof section of the plant on top of a crate. It is on the top platform of the giant tower with a blue sphere reading "Corvega." It is opposite of the entry point at the top of the stairs.