Manson Battery Isolator, Lead-Acid 12V 100A

MCU controls with FET, no moving parts, all solid state, low standby current and voltage drop.. 10 pairs of disconnect and re-connect voltages. Overtemperature, overvoltage and overcurrent protections. Operating temperature range from -40°C to +60°C. Emergency manual Over-ride to connect two batteries to supply extra power to boost the starting of your car. Charge the second battery only when starting battery is full. When used with a single battery, it acts as a low voltage cut-out to keep the battery from being overdrawn.