The USB Charger Doctor is a compact USB power monitoring tool designed for measuring voltage and current in USB-powered devices and charging systems. Installed inline between a USB power source and the connected device, it provides real-time measurements through a built-in digital display. With support for voltage measurements from 3V to 7.5V and current measurements up to 2.5A, it is ideal for evaluating USB chargers, cables, power banks, smartphones, and development projects. Its low-resistance current sensing design ensures accurate measurements without requiring an external power supply.
Features
Real-time USB voltage and current monitoring
Measures USB current up to 2.5A
Measures USB voltage from 3V to 7.5V
Inline USB testing design
No external power supply required
High-resolution voltage measurement
High-resolution current measurement
Low-resistance current sensing circuit
Suitable for charger performance testing
Ideal for USB cable evaluation
Compatible with power banks and USB devices
Fast and accurate digital readout
Compact plug-and-play design
Useful for electronics development projects
Portable diagnostic tool
Specifications
Voltage Measurement Range: DC 3.0–7.5V
Current Measurement Range: DC 0–2.5A
Voltage Accuracy: <±1%
Current Accuracy: <±2%
Voltage Resolution: 10mV
Current Resolution: 1mA
Current Sensor Resistance: 0.05Ω
Full Scale Voltage Drop: 200mV
Power Supply: Self-Powered from USB Source
Connection Type: USB Inline Tester
Display Type: Digital Display
Measurement Method: Real-Time Monitoring
Compatible Devices: USB Chargers, Phones, Power Banks, USB Cables
