The USB Charger Doctor is a compact digital tester designed to measure the voltage and current output of USB ports, chargers, and power banks. By plugging it inline between a USB power source and a device, it provides real-time monitoring of charging performance. This tool is ideal for checking charger quality, detecting faulty cables, and verifying USB power delivery for DIY electronics, smartphones, and portable devices.

Features:

1. Measures USB voltage (V) and current (A) in real time
2. Plug-and-play design with no external power required
3. Helps diagnose weak chargers, cables, and USB ports
4. Clear LED digital display for easy reading
5. Supports a wide range of USB-powered devices
6. Compact, lightweight, and easy to carry
7. Ideal for testing power banks, chargers, USB hubs, and DIY power projects

Specifications:

• Product Type: USB Charger Doctor (USB Meter)
• Input Voltage Range: 3.5V – 7.0V
• Voltage Measurement Range: 3.5V – 7.0V
• Current Measurement Range: 0A – 3A
• Measurement Accuracy: Good consumer-grade accuracy 
• Display Type: LED digital display
• Operating Current: Low power consumption
• Connector Type: USB Type-A male to USB Type-A female inline
• Use Case: Power testing, charging diagnostics, cable checking
• Operating Temperature: –10°C to +60°C
• Applications: USB chargers, power banks, microcontroller projects, portable electronics

Package Includes:

1 × USB Charger Doctor - USB Voltmeter and Ammeter Tester