MakerHawk 150W Battery Load Tester User Manual

1. Introduction

The MakerHawk 150W Battery Load Tester is a versatile electronic load device designed for precise testing of various power sources, including batteries, chargers, power banks, and power adapters. It features a 2.4-inch high-definition color screen, supports multiple operating modes (constant current, constant voltage, constant power, constant resistance), and incorporates intelligent safety protections. This manual provides detailed instructions for setup, operation, and maintenance to ensure accurate and reliable performance.

2. Safety Information

Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the device or connected equipment.

• Ensure proper ventilation during operation, especially during long-term discharge tests, to prevent overheating.
• Do not exceed the maximum voltage (200V), current (25A), or power (150W) ratings of the device.
• Use appropriate wiring and connectors for the current and voltage levels being tested.
• Avoid contact with exposed electrical terminals when the device is powered on.
• Keep the device away from water, moisture, and flammable materials.
• If the device trips a temperature alarm, reduce the load or improve cooling before resuming operation.
• A 12V power supply (not included) is required to power the unit. Ensure the power supply meets the specified requirements.

3. Package Contents

Verify that all items are present in the package:

• 1x MakerHawk 150W Battery Load Tester
• 1x Temperature Probe
• 1x Test Adapter Board
• 1x DC Power Supply (for the tester unit)
• 1x Alligator Clip Line
• 1x Computer Connection Cable
• 1x EU Plug Adapter (may vary by region)

4. Product Overview and Features

The MakerHawk 150W Battery Load Tester is equipped with several key features for comprehensive testing:

• 2.4" High-Definition Color Screen: Provides clear and precise readings of voltage, current, power, resistance, capacity, energy, temperature, and other parameters.
• Multi-Device Compatibility: Suitable for discharge aging tests of chargers, cables, power banks, batteries, and power adapters.
• Multiple Operating Modes: Supports Constant Current (CC), Constant Power (CP), Constant Resistance (CR), and Constant Voltage (CV) modes.
• Four-Wire System: Ensures accurate voltage measurements by eliminating the effect of wire resistance, comparable to professional instruments. Also compatible with two-wire connections.
• Intelligent Safety Protections: Includes overload, overcurrent, and high-temperature protection (MOS tube and external probe) with real-time monitoring.
• Intelligent Cooling: Features an intelligent fan for strong airflow and low noise, extending service life and supporting continuous operation.
• PC Software Control: Allows for computer software viewing and setting of parameters.

5. Setup

5.1 Powering the Device

The load tester requires an external 12V power supply for operation. Connect the provided DC power adapter to the DC input port on the back of the unit. Alternatively, a USB-C power source can be used with the appropriate adapter board.

5.2 Wiring Methods

The device supports both simplified two-wire and precise four-wire connection methods for the load. The four-wire system provides higher accuracy by separating the voltage sensing wires from the current carrying wires, thus compensating for voltage drops across the test leads.

• Two-Wire Method: Connect the positive and negative terminals of the power source to the A+ and A- terminals on the load tester. This method is simpler but may have slight voltage measurement inaccuracies due to lead resistance.
• Four-Wire Method: Connect the positive and negative terminals of the power source to the A+ and A- terminals (current paths). Additionally, connect separate voltage sensing wires from the power source to the V+ and V- terminals. This method ensures the most accurate voltage readings.

5.3 Initial Language Setting

Upon first power-up, the device may default to Chinese. Navigate through the menu using the buttons below the screen to locate the language settings and select "English" for easier operation.

6. Operating Instructions

6.1 Interface Introduction

The 2.4-inch color screen displays various parameters and settings. Familiarize yourself with the main interface and navigation buttons.

6.2 Operating Modes

The load tester supports the following primary operating modes:

• Constant Current (CC): Maintains a constant discharge current. Useful for battery capacity testing.
• Constant Voltage (CV): Maintains a constant voltage across the load.
• Constant Power (CP): Maintains a constant power dissipation.
• Constant Resistance (CR): Maintains a constant resistance across the load.

Select the desired mode from the menu and set the target parameters (e.g., current for CC mode, voltage for CV mode). The device will automatically adjust the load to maintain the set value.

6.3 Battery Capacity Testing (Constant Current Mode Example)

To test battery capacity:

1. Ensure the battery is fully charged.
2. Connect the battery to the load tester using the four-wire method for optimal accuracy.
3. Set the appropriate cutoff voltage for your battery type (e.g., 10.5V for a 12V LiFePO4 battery). This prevents over-discharge.
4. Clear any previous test data to start with a clean slate.
5. Select Constant Current (CC) mode.
6. Set the desired discharge current. Start with a conservative value and monitor the MOS temperature. Do not exceed 99°C. Adjust current as needed, ensuring adequate cooling.
7. The tester will display the discharged capacity (mAh or Ah) and energy (Wh). The test concludes when the battery voltage reaches the set cutoff voltage.

6.4 PC Software Control

The load tester supports connection to a computer for software control and data logging. Use the provided computer connection cable to link the device to your PC. The software allows for viewing real-time data, setting parameters, and analyzing test results. Refer to the software documentation for detailed instructions on installation and usage.

7. Maintenance

The MakerHawk 150W Battery Load Tester is designed for durability. Regular maintenance is minimal but important for optimal performance:

• Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
• Ventilation: Ensure the intelligent cooling fan and heatsink are free from obstructions to maintain proper airflow. Periodically check for dust buildup on the fan blades and heatsink fins.
• Storage: Store the device in a cool, dry place when not in use.

8. Troubleshooting

• Device does not power on:
  • Ensure the 12V power supply is correctly connected and functioning.
  • Verify the power outlet is active.
• Temperature alarm (OTP) triggers frequently:
  • Reduce the set discharge current or power.
  • Ensure adequate ventilation around the device. Consider using an external fan to assist cooling, especially during high-power or long-duration tests.
  • Check if the heatsink or fan is obstructed by dust or debris.
• Inaccurate voltage readings:
  • Ensure the four-wire connection method is used for maximum accuracy.
  • Check all wiring connections for looseness or corrosion.
• PC software not connecting:
  • Verify the USB connection cable is securely plugged into both the tester and the computer.
  • Ensure the correct drivers are installed for the device on your operating system.
  • Check if the software is compatible with your operating system (e.g., Windows 11).
• Display is in an unfamiliar language:
  • Navigate to the system settings menu and select "English" as the display language.

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for warranty claims.