ALIENTEK EL15 DC Electronic Load User Manual

1. Introduction

The ALIENTEK EL15 is a compact and high-performance DC Electronic Load designed for various testing requirements, including battery capacity testing, power supply dynamic testing, and constant current/voltage/resistance/power applications. Featuring a 1.9-inch IPS LCD screen and Bluetooth connectivity, it offers precise control and monitoring for both professional and DIY electrical projects.

2. Product Overview

2.1 Key Features

• High Power Density: 150W maximum load power in a mini form factor (0.1-60V, 0-12A).
• High Accuracy: 1mV/1mA 24-bit hardware ADC for excellent readback accuracy (Voltage reading: 1mV, accuracy 0.05% + 0.1% FS; Current reading: 0.1mA, accuracy 0.025% + 0.025% FS).
• Multiple Measurement Modes:
  • Basic: Constant Current (CC), Constant Voltage (CV), Constant Resistance (CR), Constant Power (CP).
  • Battery: Capacity Test (CAP), DC Internal Resistance (DCR).
  • Power Supply: Dynamic Test (DT), Automatic Test (AUTO).
  • Advanced: List Test (LIST), Scan Test (SCAN).
• Local/Remote Measurement: Supports both local and remote compensation input for flexible testing scenarios.
• Bluetooth Functionality: Connects to mobile app "ATK-xTOOL" (Android and iOS) for remote control and data logging.
• User Interface: 1.9-inch IPS LCD Screen with 320*170 resolution for clear display of data and settings.
• Efficient Cooling: Equipped with 13000RPM dual fans, aluminum dense-tooth radiator, and intelligent PID control for optimal heat dissipation.
• Robust Design: Full aluminum CNC craftsmanship for durability and premium texture.
• Six-Fold Protection: Includes Overcurrent Protection (OCP), Overvoltage Protection (OVP), Overpower Protection (OPP), Undervoltage Protection (UVP), Over-temperature Protection (OTP), and Reverse Polarity Protection (RPP).

2.2 Package Contents

Verify that all items are present in your package:

• EL15 Electronic Load x1
• USB Cable - Type-C 1.2m x1
• XT30U-F Female Connector x1
• Alligator Clip Power Cable - Red x1
• Alligator Clip Power Cable - Black x1

2.3 Device Layout

1. 4mm Load Input Port Positive + (Red)
2. Remote Compensation Input Port (XT30 Male Connector)
3. 4mm Load Input Port Negative - (Blue)
4. 1.9-inch IPS LCD Screen
5. USB TYPE-C Power Input Port
6. Multi-function Keyboard
7. Radiator Air Outlet
8. Radiator Air Inlet

3. Setup

3.1 Powering the Device

Connect the EL15 to a 5V 2A power source using the provided USB Type-C cable. The USB TYPE-C Power Input Port (5) is located on the rear of the device.

3.2 Connecting the Load

The EL15 supports both local and remote measurement configurations.

3.2.1 Local Measurement

Suitable for quick measurement scenarios. Connect the positive (red) and negative (blue) load wires from the source under test directly to the 4mm Load Input Ports (1 and 3) on the EL15.

3.2.2 Remote Measurement

Suitable for high-precision measurement scenarios. In addition to the two load wires (positive and negative) for current transmission, two remote compensation wires (connected to the XT30 male connector) are used for detecting the actual output voltage of the source under test. Connect the XT30 male connector to the Remote Compensation Input Port (2).

4. Operating Modes

The EL15 offers a variety of measurement modes accessible via the multi-function keyboard (6) and the 1.9-inch IPS LCD Screen (4).

4.1 Basic Measurement Modes

These modes allow the EL15 to operate as a constant current, voltage, resistance, or power load.

• Constant Current Mode (CC): The load will draw a constant current at the set value, regardless of input voltage changes.
• Constant Voltage Mode (CV): The load maintains the input voltage at a constant value by drawing current.
• Constant Resistance Mode (CR): The load acts as a constant resistor, dynamically adjusting the load current according to the input voltage.
• Constant Power Mode (CP): Dynamically adjusts the load current to make the load consume constant power.

4.2 Battery Measurement Mode

This mode is ideal for evaluating battery performance.

• Capacity Test (CAP): By recording discharge time and current under constant-current discharge, the actual capacity of a battery or energy storage device is calculated. Applicable for battery capacity evaluation, energy storage device testing, battery aging analysis, and product quality inspection.
• DC Internal Resistance Measurement (DCR): The DC internal resistance, derived from the voltage change between two pulsed load currents, is a key parameter for evaluating a power supply's power characteristics, output performance, and state of health.

4.3 Power Supply Measurement Mode

Designed for comprehensive power supply evaluation.

• Dynamic Test (DT): Simulates real-world load changes with alternating current levels to evaluate power supply response speed, efficiency, reliability, and safety.
• Automatic Test (AUTO): Streamlines testing with one-click automation. After configuring initial rated termination and step currents, the system provides a comprehensive suite of metrics, including rated power, voltage to maximum current, power, and load regulation.

4.4 Advanced Measurement Mode

For more complex and automated testing sequences.

• List Test (LIST): Stores up to 10 sets of current and duration parameters to perform complex testing under multiple conditions. Useful for dynamic performance testing, automated verification, and quality control.
• Scan Test (SCAN): By setting low current, high current, and rise/fall time, dynamic response performance testing of the device under test can be realized.

4.5 Screen Interfaces

The 1.9-inch IPS LCD screen provides intuitive navigation and data display.

• Main Interface: Displays real-time measurements (voltage, current, power) and current operating mode.
• Setting Interface: Allows configuration of device parameters such as screen off time, temperature units, language, and buzzer settings.
• Measurement Interface: Provides detailed real-time data for the selected measurement mode.
• Automatic Measurement Report Interface: Shows results and statistics after completing an automatic test.

5. Bluetooth Function

The EL15 features Bluetooth connectivity for remote control and data monitoring via a mobile application.

5.1 Mobile App

The official mobile app is named "ATK-xTOOL" and is available for both Android and iOS devices.

5.2 Connection Steps

1. Open the mobile app "ATK-xTOOL" on your smartphone or tablet.
2. Scan for Bluetooth devices within the app.
3. Find and select the EL15 device from the list.
4. Once the connection is successful, click to enter the EL15 Operation Interface within the app.

6. Maintenance

To ensure the longevity and optimal performance of your ALIENTEK EL15, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use abrasive cleaners or solvents. Ensure no liquids enter the device.
• Storage: Store the device in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity.
• Ventilation: Ensure the radiator air inlets (8) and outlets (7) are clear of obstructions to allow for proper airflow and heat dissipation.
• Cable Care: Inspect all cables (USB, alligator clips, XT30) regularly for any signs of wear or damage. Replace damaged cables immediately.

7. Troubleshooting

If you encounter issues with your EL15, refer to the following common troubleshooting steps:

• Device Not Powering On: Ensure the USB Type-C power cable is securely connected to a 5V 2A power source. Try a different USB cable or power adapter.
• No Load Detected: Check that the load wires are correctly and securely connected to the 4mm Load Input Ports. Verify the source under test is providing power.
• Inaccurate Readings: If using remote measurement, ensure the compensation wires are correctly connected and the remote measurement option is selected in the device settings. Check for loose connections.
• Bluetooth Connection Issues: Make sure Bluetooth is enabled on your mobile device. Ensure the EL15 is within range. Restart both the EL15 and the "ATK-xTOOL" app.
• Over-temperature Warning: Check that the cooling fans are operating and that the air inlets/outlets are not blocked. Reduce the load if the warning persists.

For persistent issues, please contact ALIENTEK customer support.

8. Specifications

9. User Tips

Here are some tips to enhance your experience with the ALIENTEK EL15:

• Start Simple: If you're new to electronic loads, begin with Constant Current (CC) or Constant Voltage (CV) modes to familiarize yourself with the device's basic operation before moving to more advanced tests.
• Monitor Temperature: While the EL15 has efficient cooling, always ensure good ventilation, especially during prolonged high-power tests, to prevent overheating.
• Use Remote Sensing for Accuracy: For critical measurements, especially with longer test leads or higher currents, utilize the remote compensation input (XT30) to minimize voltage drop errors and achieve higher accuracy.
• Explore the App: The "ATK-xTOOL" mobile app offers convenient remote control and data logging features. Take time to explore its functionalities for easier test management and analysis.
• Safety First: Always double-check your wiring connections before applying power to avoid reverse polarity or short circuits, despite the built-in protections.

10. Warranty and Support

ALIENTEK products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please contact your original point of purchase or visit the official ALIENTEK website. Keep your purchase receipt as proof of purchase for warranty claims.