Uni-Directional Battery Separator by Sure Power. The Battery Separator Smart Solenoid Charge Priority System offers Simple installation Connects to primary battery auxiliary battery and ground. Input Voltage: 12VDC, Output Voltage: 13.5VDC, Peak Output: 400 amps, Continuous Output: 100 amps, Notes: Negative Ground Includes (3) 1/4" Blade Terminals, 1 Lamp, 1 Signal and 1 Ground Separates Primary Battery from Auxiliary Battery to prevent Draining of Primary Battery and/or Damage to Charging System.