A battery switch including a selector supported by a housing and rotatably mounted to the housing. The selector having four positions, including, a first position in which a first and second bank terminals are disconnected from a first and second load terminals, a second position in which the first bank terminal is connected to the first load terminal and the second bank terminal is disconnected from the second load terminal, a third position in which the first bank terminal is connected to the first load terminal, the second bank terminal is connected to the second load terminal, and the first bank terminal is disconnected from the second bank terminal, and a fourth position in which the first bank terminal is connected to the first load terminal and the second bank terminal and the second bank terminal is connected to the second load terminal.