The versatile Draw Monitor efficiently monitors car battery voltage and leakage current and serves as a backup power supply during battery replacement to prevent data loss. With a connection via the OBDII interface, it supplies 12V power to diagnose various faults and monitor the vehicle's electrical system. Capable of delivering up to 10 amps continuous current and featuring Bluetooth connectivity, the Draw Monitor is perfect for technicians and car enthusiasts seeking insightful diagnostic capabilities. Graphing mode displays voltage and amperage as a waveform for detailed analysis.