USB Mini Discharge Load Resistor & Digital Voltage Current Tester
USB Mini Discharge Load Resistor & Digital Voltage Current Tester
USB Mini Discharge Load Resistor with Digital Current & Voltage Meter Tester
Test and verify your USB power sources with precision using this compact USB Mini Discharge Load Resistor with Digital Current & Voltage Meter Tester. Whether you're a hobbyist, electronics enthusiast, or technician, this handy device lets you instantly check the actual output current and voltage of any USB 5V power supply, charger, power bank, or computer USB port — all in one small, plug-and-play unit.
Key Features
- Dual Load Options: Switch between 1A (Green LED) and 2A (Red LED) discharge loads at the flip of a switch for flexible testing scenarios.
- Built-in Digital Meter: Real-time current and voltage readings displayed clearly on the integrated digital display — no guesswork, no extra equipment needed.
- 5W Dissipation Power: Handles up to 5W of power dissipation, making it suitable for standard USB 5V power testing applications.
- Wide Operating Temperature Range: Rated for -40°C to 80°C, ensuring reliable performance in a variety of environments.
- Toggle Switch: Conveniently select your desired load (1A or 2A) with the on-board switch — great for comparing charger performance under different load conditions.
- Compact & Portable: SMD construction keeps the unit small and lightweight — slip it in your toolkit or carry it anywhere.
- Plug & Play: Simply insert into any USB port and start reading — no drivers, no setup required.
Specifications
| Supply Voltage | 5V (USB) |
| Dissipation Power | 5W |
| Load Options | 1A (Green LED) / 2A (Red LED) |
| Operating Temperature | -40°C ~ 80°C |
| Package Type | SMD |
| Quantity | 1 Unit |
| Condition | New |
| Origin | Made in China |
Who Is This For?
This tester is ideal for anyone who wants to verify the real-world performance of USB chargers, power banks, computer USB ports, car chargers, or wall adapters. Stop wondering if your power source is delivering what it promises — this tool gives you the facts instantly.
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Frequently Asked Questions
Q: What USB devices can I test with this USB discharge load resistor tester?
A: You can test virtually any USB 5V power source, including USB wall chargers, power banks, computer USB ports, laptop USB ports, car chargers, and USB hubs. As long as the device outputs a standard 5V USB supply, this tester will measure and display the actual current and voltage being delivered.
Q: What is the difference between the 1A (Green LED) and 2A (Red LED) load settings?
A: The 1A Green LED setting draws a 1-amp load from the USB source, while the 2A Red LED setting draws a 2-amp load. By switching between these two modes, you can evaluate how well your USB charger or power bank maintains stable voltage and current output under different demand levels — a useful way to assess overall charging quality and capability.
Q: Is any additional software or driver required to use this tester?
A: No. This USB tester is completely plug-and-play. Simply insert it into any USB Type-A port and the digital display immediately shows live current and voltage readings. No drivers, apps, or configuration are needed.