Roadi is a Bluetooth car charger APP that monitors dual-port USB output voltage and current data in real-time, it can automatically display 14 fast charge protocols. It will be automatically connected, which can view multi-vehicle data freely with multi-cars management. It always monitors the car battery voltage, tests cranking system and alerts user if data abnormal. User can share the family vehicle data to each other, also can check your spouse's or child's car battery status, location and