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Digital Voltmeter Ammeter USB Portable L Shape Tester (Charge DR)

Digital Voltmeter Ammeter USB Portable L Shape Tester (Charge DR)

The USB Charger Doctor is a handy diagnostic tool designed to measure the working voltage and current output of any USB port or powered project. Housed in a blue plastic case, this compact dongle connects directly to USB devices and allows data lines to pass through while measuring current draw using a 0.05-ohm resistor connected to the power pin. Real-time voltage and current readings are shown on its digital display, making it ideal for analyzing devices such as chargers, cables, and mobile phones.

Package Includes

  • 1 x USB Charger Doctor Dongle

14.95 AED 14.95 AED Tax Included
14.95 AED Tax Included

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USB Current Voltage Display Module
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Features

  • Input Voltage Range: 3.5 to 7VDC (typical USB range: 4.75 to 5.25V)
  • Current Handling: Up to 3A
  • Automatic Switching: Alternates between voltage and current every 3 seconds
  • USB Compatibility: Supports USB 1.x and 2.x (USB 3.0 ports downgrade to v2)
  • Applications: Great for testing USB devices, debugging chargers, and measuring load levels

Specifications

  • USB Standards: USB 1.x and 2.x
  • Resolution: 10mV / 10mA
  • Operating Temperature: 0–60°C
  • Dimensions: 21mm x 53mm x 15mm (0.8" x 2.1" x 0.6")
  • USB Plug Length: 13mm (0.5")
  • Weight: 16.2g

 

 

Features:

  • Standard Raspberry Pi 40PIN GPIO extension header, compatible with Raspberry Pi series boards
  • I2C bus communication for real-time monitoring of battery voltage, current, power, and remaining capacity
  • Multi-battery protection circuits: overcharge/discharge protection, over current protection, short circuit protection, reverse protection, and equalizing charge
  • Onboard 5V regulator, up to 2.5A continuous output current
  • 5V USB output for powering additional boards
  • Batteries warning indicators for easy connection verification

Specifications:

  • Output voltage: 5V
  • Charger: 8.4V 2A
  • Control bus: I2C
  • Battery supported: 18650 Li battery (NOT included)
  • Dimensions: 56mm × 85mm
  • Mounting hole: 3.0mm