An electric system for powering an electric or hybrid vehicle, comprising: a motor (130, 606); a motor control module (128, 600) operatively connected to the motor (130, 606); a first battery subassembly; a second battery subassembly; a voltage converter electrically connected to the first battery subassembly and the second battery subassembly; an electric vehicle module electrically connected to the first battery subassembly and to the second battery subassembly; and an interrupter comprising a switched current-limiting path in parallel with a switched non-current limiting path; characterized in that the electric system further comprises: the interrupter being adapted to connect the first and second battery subassemblies (282, 284) in series; and the first battery subassembly being adapted to cause closing of the switched current-limiting path when an energizing trigger is applied to the electric system, to cause the voltage converter to start being energized by the first and second battery subassemblies (282, 284) via the switched current-limiting path and to cause the voltage converter to start energizing the electric vehicle module; and the electric vehicle module being adapted to cause closing of the switched non-current-limiting path after being energized by the first and second battery subassemblies (282, 284) and to cause the motor control module (128, 600) and the motor (130, 606) to be energized by the first and second battery subassemblies (282, 284) via the switched non-current-limiting path. a motor (130, 606); a motor control module (128, 600) operatively connected to the motor (130, 606); a first battery subassembly; a second battery subassembly; a voltage converter electrically connected to the first battery subassembly and the second battery subassembly; an electric vehicle module electrically connected to the first battery subassembly and to the second battery subassembly; and an interrupter comprising a switched current-limiting path in parallel with a switched non-current limiting path; characterized in that the electric system further comprises: the interrupter being adapted to connect the first and second battery subassemblies (282, 284) in series; and the first battery subassembly being adapted to cause closing of the switched current-limiting path when an energizing trigger is applied to the electric system, to cause the voltage converter to start being energized by the first and second battery subassemblies (282, 284) via the switched current-limiting path and to cause the voltage converter to start energizing the electric vehicle module; and the electric vehicle module being adapted to cause closing of the switched non-current-limiting path after being energized by the first and second battery subassemblies (282, 284) and to cause the motor control module (128, 600) and the motor (130, 606) to be energized by the first and second battery subassemblies (282, 284) via the switched non-current-limiting path. the interrupter being adapted to connect the first and second battery subassemblies (282, 284) in series; and the first battery subassembly being adapted to cause closing of the switched current-limiting path when an energizing trigger is applied to the electric system, to cause the voltage converter to start being energized by the first and second battery subassemblies (282, 284) via the switched current-limiting path and to cause the voltage converter to start energizing the electric vehicle module; and the electric vehicle module being adapted to cause closing of the switched non-current-limiting path after being energized by the first and second battery subassemblies (282, 284) and to cause the motor control module (128, 600) and the motor (130, 606) to be energized by the first and second battery subassemblies (282, 284) via the switched non-current-limiting path.