This USB diagnostic tool, often referred to as a "USB Charger Doctor," is designed to monitor the real-time performance of USB power sources and connected devices. It provides a convenient way to measure voltage and current without requiring an external power supply, as it draws power directly from the 5V USB port. The device features a digital display housed in a clear case, allowing for easy monitoring of power consumption and charging rates.

Specifications

• Detection Voltage Range: 3V DC – 7V DC
• Voltage Accuracy: ±0.1V
• Detection Current Range: 0A – 3A
• Current Accuracy: ±0.01A
• Interface: USB Type-A (Male input to Female output)
• Display Update: Alternates between Voltage and Current approximately every 3 seconds

Features

• Plug-and-Play Operation: Requires no setup or additional power, making it highly portable and easy to use.
• Real-Time Monitoring: Flips between voltage and current readouts automatically to provide a full picture of power status.
• Broad Compatibility: Can detect output from PC USB ports, home wall chargers, car chargers, and power banks.
• Device Protection: Useful for testing if a 5V electronic product or charger is operating within safe and expected parameters.
• Diagnostic Utility: Helps in debugging batteries, checking load levels, and identifying high-resistance or faulty USB cables.

Common Applications

• Measuring the current draw of USB-powered DIY projects (Arduino, Raspberry Pi).
• Verifying the actual output of phone and tablet chargers.
• Checking the charging efficiency of various USB cables.
• Monitoring the power consumption of any 5V electronic device.