USB Load Resistor Module 1A/2A Price in Bangladesh

The USB Load Resistor 1A/2A with Switch is a compact electronic testing accessory designed to evaluate the performance of USB power sources under electrical load. It features a standard USB Type-A connector and a selector switch that allows users to choose between 1A and 2A load modes.

A USB charger or power bank may show a normal output voltage when no device is connected. However, its output voltage may decrease when a connected device draws current. Testing under load helps determine whether a power source can maintain a suitable output voltage while supplying a specified current.

This module provides a resistive load that draws approximately 1A or 2A from a compatible 5V USB power source. It can be used to evaluate USB chargers, power banks, USB adapters, and other compatible 5V supplies. When paired with a suitable USB capacity meter, it can also support discharge testing to estimate the usable capacity of a power bank.

The module uses resistors to consume electrical power and convert it into heat. Its compact design makes it convenient for electronics workbenches, educational demonstrations, DIY projects, and basic power-supply testing.

The selectable load modes make it possible to compare the behaviour of a power source under different current demands. The 1A mode applies a lower load, while the 2A mode places a greater demand on the source. The actual current depends on the output voltage and the module’s resistance, so these values should be understood as nominal operating modes rather than precision current regulation.

What Is a USB Load Resistor?

A USB load resistor is an electronic component or module that draws current from a USB power source. It simulates the electrical demand of a connected device, allowing the source to be checked under load.

For example, a USB power adapter may provide approximately 5V when nothing is connected. When a load draws current, the output voltage may remain stable or drop depending on the adapter’s design, condition, cable resistance, and current capability.

A load resistor makes this behaviour easier to evaluate. Unlike a conventional USB voltage meter, which primarily measures electrical parameters, a load resistor actively draws current from the source.

This product offers two selectable nominal load settings: 1A and 2A. It is therefore useful for basic comparative testing of compatible USB power sources. For numerical voltage, current, and capacity measurements, use an appropriate meter or USB tester alongside the load module.

Key Features

1. Selectable 1A and 2A Load Modes

The built-in switch allows users to select a nominal 1A or 2A load. This provides two operating levels for evaluating a compatible USB power source under different current demands.

2. Standard USB Type-A Connector

The USB Type-A male connector supports direct connection to compatible USB-A output ports. No separate power input is needed for the load itself when used with a suitable USB source.

3. Resistive Load Design

The module uses fixed resistive elements to consume electrical power. The load provides a straightforward method for checking the behaviour of USB power supplies under demand.

4. Power Bank Testing Support

When used with a suitable capacity meter, the module can help evaluate a power bank’s discharge performance. The meter, rather than the resistor alone, is responsible for measuring or calculating delivered capacity.

5. Compact PCB Construction

Its small circuit-board design makes it convenient for a testing bench, electronics toolbox, or DIY electronics setup.

6. Useful for USB Charger Evaluation

The module helps assess whether a compatible USB charger can sustain a load at the selected nominal current. It can also help reveal output-voltage drops associated with a weak supply or a resistive cable.

7. Simple Operating Concept

The module does not require complex configuration. The user selects the supported load mode and uses the appropriate measurement equipment to observe the power source’s behaviour.

Technical Specifications

Technical note: These are typical specifications for the 1A/2A USB load-resistor version. The module can become hot during operation, particularly in 2A mode. It is not intended for indefinite continuous loading unless the specific manufacturer’s rating permits it.

Working Principle

The USB Load Resistor works by drawing electrical current from a USB power source through its resistive elements. The selector switch changes the active load arrangement to provide the nominal 1A or 2A operating mode.

The relationship between voltage, current, and power explains how the module operates. At a nominal 5V USB supply, a 1A load consumes approximately 5W, while a 2A load consumes approximately 10W.

The electrical energy is converted into heat by the resistors. This heat is a normal consequence of resistive loading, but it means the module has thermal limitations.

When testing a USB power source, a separate voltmeter or USB tester can be used to observe the output voltage under load. A significant voltage drop may indicate limitations in the source, connector, or cable. The result should be interpreted according to the power source’s rated output and the test conditions.

For power bank capacity testing, a compatible capacity meter records the discharge current over time and calculates the delivered capacity. The load resistor supplies the demand, while the measuring instrument performs the measurement.

Applications

USB Charger Testing

Evaluate compatible USB chargers under nominal 1A and 2A load conditions to observe whether the output remains stable.

Power Bank Testing

Use the module with a suitable USB capacity meter to support controlled discharge tests and estimate usable power bank capacity.

USB Adapter Evaluation

Check the performance of compatible 5V USB adapters when supplying a defined resistive load.

USB Port Testing

Assess the output behaviour of compatible USB power ports, provided the selected load is within the port’s rated capabilities.

Cable Voltage-Drop Checks

When combined with a suitable voltage measurement device, the module can help reveal voltage drops associated with cable and connector resistance.

Electronics Laboratory Experiments

Demonstrate the relationships among voltage, current, electrical power, resistance, and heat dissipation.

DIY Electronics Projects

Use it as a basic testing accessory when developing or evaluating compatible USB-powered equipment.

Advantages

• Provides two selectable nominal load settings.
• Uses a convenient USB Type-A connector.
• Supports basic testing of compatible 5V power sources.
• Helps evaluate chargers and power banks under load.
• Can be paired with a suitable USB capacity meter.
• Compact and convenient for electronics workbenches.
• Offers a straightforward way to demonstrate electrical loading.

Limitations

The module is a resistive load, not a complete electronic measurement instrument. It does not independently display voltage, current, elapsed time, or battery capacity.

The 1A and 2A settings are nominal load modes, not precision constant-current regulation. Actual current depends on the applied voltage and resistance.

The resistors produce heat during operation, particularly at the higher load setting. The module should not be used beyond its rated thermal limits or left operating unattended.

The standard USB Type-A connector does not mean that every USB power source is suitable. Check the source’s output rating before selecting a load mode. Do not use the basic 5V load module with a higher-voltage output unless the manufacturer explicitly confirms compatibility.

Installation and Usage Tips

• Verify that the power source provides a compatible USB output, nominally 5V DC.
• Check the source’s current rating before selecting the 1A or 2A mode.
• Use a suitable USB tester or voltmeter when you need numerical readings.
• Use a compatible capacity meter if your goal is to measure power bank discharge capacity.
• Allow adequate ventilation around the resistors because they dissipate heat.
• Avoid touching the resistor elements during or immediately after operation.
• Do not leave the module running unattended or use it near combustible materials.
• Stop the test if the module, connector, or power source shows signs of damage or abnormal behaviour.

Why Choose the USB Load Resistor 1A/2A?

The USB Load Resistor 1A/2A is a practical accessory for users who need a simple resistive load for evaluating compatible USB power sources. Its selectable load modes make it possible to compare performance under two nominal current conditions.

For students, electronics hobbyists, and laboratory users, it can support practical experiments involving USB power supplies, voltage drops, and electrical power. When paired with a compatible capacity meter, it can also be used as part of a power bank discharge-testing arrangement.

Before purchasing, ensure that the product’s connector, load modes, and thermal ratings meet your intended testing requirements.

Why Buy from ElectroXBD?

ElectroXBD supplies electronic components, modules, and accessories for students, hobbyists, engineers, laboratories, and robotics projects in Bangladesh.

Whether you are working on an educational experiment, testing a USB power source, or assembling an electronics workbench, ElectroXBD helps you source useful electronic accessories for your projects.

Business Address: H#1/1, Opposite of RH Chhatrabash, Vodra-Talaimari Road, Rajshahi, Bangladesh.

Website: electroxbd.com

Contact / WhatsApp: 01600334238

Email: electroxbd@gmail.com

Frequently Asked Questions (FAQ)

1. What is a USB Load Resistor 1A/2A?

It is a USB load-testing accessory that draws a nominal 1A or 2A from a compatible 5V USB power source to help evaluate its output under load.

2. What is the purpose of the 1A/2A switch?

The switch selects between two nominal load levels. The 1A setting draws a lower current, while the 2A setting places a greater demand on the power source.

3. Can this module test a power bank?

Yes, it can provide a load for a compatible power bank. For capacity measurement, pair it with a suitable USB capacity meter.

4. Does this product measure battery capacity by itself?

No. The basic load-resistor module draws current but does not independently calculate or display capacity. A compatible capacity meter is required.

5. What is the operating voltage?

The typical operating voltage is 5V DC through the USB Type-A connector. Verify the exact version before use.

6. How much power does it dissipate?

At nominal 5V, the approximate power dissipation is 5W in 1A mode and 10W in 2A mode.

7. Does the module become hot?

Yes. The resistors convert electrical energy into heat, so the module can become hot during operation. Adequate ventilation and appropriate operating limits are important.

8. Can I use it with a USB-C charger?

Only through a compatible 5V USB output arrangement that supports the load and connector. Do not assume compatibility with higher-voltage fast-charging modes.

9. Can it test USB cables?

When paired with suitable voltage-measurement equipment, it can help identify voltage drops under load. The module alone does not provide a numerical cable-resistance measurement.

10. Where can I buy a USB Load Resistor 1A/2A in Bangladesh?

You can buy the USB Load Resistor 1A/2A from ElectroXBD, a trusted electronics components supplier in Bangladesh. Visit electroxbd.com or contact 01600334238 to check availability.

Common Questions:

Q: What is the price of USB Load Resistor for Battery Capacity Tester in Bangladesh?

A: The latest price of USB Load Resistor for Battery Capacity Tester in Bangladesh is 150 BDT.

Q: Where to buy USB Load Resistor for Battery Capacity Tester in Bangladesh?

A: You can buy the USB Load Resistor for Battery Capacity Tester at the best price from ElectroXBD in Bangladesh.