1. Introduction
The ATORCH DL24/P is a versatile DC USB tester and electronic load designed for monitoring and testing various power sources, including lithium batteries, power adapters, and USB chargers. It features a 2.4-inch HD color screen and supports Bluetooth data transmission for app-based control and monitoring. This manual provides detailed instructions for setup, operation, and troubleshooting to ensure safe and effective use of your device.
This product is used to inspect and test the capacity of various batteries, discharge and aging various power adapters, USB chargers, various mobile power and other power supply equipment.
For a more detailed user manual, please refer to the official PDF document: User manual (PDF)
2. Product Overview
The DL24/P electronic load tester is equipped with a cooling fan, a 2.4-inch color screen display, and multiple input ports for various testing scenarios. It supports both wired and wireless (Bluetooth) connections for data monitoring and control.
DL24P 180W load tester with fan and display showing test parameters.
DL24 150W load tester with fan and display showing test parameters.
Key Components:
- Input Port of the Tested Device: Green terminal block for connecting the device under test.
- DC5.5 Power Input: For powering the electronic load (DC12V 1A recommended).
- USB Input Detection Ports: Mini USB, Micro USB, Type-C for testing various USB devices.
- 2.4-inch Large Color Screen Display: Shows real-time test data.
- 4 Operation Buttons: For navigating menus and adjusting settings.
- Bluetooth Module: For wireless connection to mobile apps.
- System Speaker: Provides audio feedback.
- PC Online Connection Interface: For wired connection to PC software.
- External NTC Temperature Probe Socket: For measuring external temperatures.
Detailed view of input ports and electrical parameters.
3. Specifications
| Attribute | Value |
|---|---|
| Brand Name | ATORCH |
| Model Number | DL24/DL24P |
| Type | Household Battery Tester |
| DIY Supplies | Electrical |
| Origin | Mainland China |
| Certification | CE, RoHS |
| Voltage Range | 2-200V |
| Current Range | 0.2-20A |
| Power Range | DL24: 150W, DL24P: 180W |
| Capacity Test Range | 0~99999AH |
| Test Mode | CC (constant current mode), CV (constant voltage mode), CP (constant power mode), CR (Constant Resistance Mode) |
| Power Supply Method | DC12V power supply |
| Built-in Bluetooth Module | Yes |
| Wired Connection | Supports PC computer connection |
| Battery Included | No |
| High-concerned chemical | None |
Product Dimensions:
Dimensions for DL24 (156x96x58mm) and DL24P (156x98x83mm).
4. Setup
Power Supply Instructions:
The DL24/P electronic load does not include a power adapter. It must be powered by a DC12V 1A power supply. Ensure the power supply is connected before operation.
- DC5.5-12V Power Supply: Insert into the device's DC5.5 interface.
- USB-5V/2A Charger Power Supply: Insert into the device's CC port.
- QC/PD Protocol 12V Charger Power Supply: Insert into the device's CC port.
Attention: A DC12V power supply is required for the device to function correctly.
DL24 150W with included DC12V 1A power supply.
Wiring Methods:
The electronic load supports two main wiring methods: 2-wire and 4-wire connections.
- 2-Wire Wiring Method: This method is relatively simple and convenient. Connect the positive and negative terminals of the device under test to the A+ and A- terminals respectively. Note: I+ and V+ are shorted, I- and V- are shorted, the two holes are combined into one.
- 4-Wire Wiring Method: This method provides more accurate voltage measurement as it is not affected by voltage drop across the wires. It is recommended for users with a certain circuit knowledge for more precise measurements.
Diagram illustrating 2-wire and 4-wire connection methods.
Accessories:
The standard package includes several accessories to facilitate testing:
- Measuring Line Adapter Board: For testing DC power supply, Mini USB, Type-C, and Android USB data cables.
- Temperature Probe: To measure battery surface temperature and other device temperatures.
- 10A 2-Wire Test Cable: For detecting batteries or other 10A wiring equipment within range.
- Computer Online Cable: Connects the device to a computer for software use, firmware upgrades, and data reading.
Additional accessories, such as the Fast Charging Protocol High Voltage Trigger Test Board, need to be ordered separately.
DL24P 180W with included accessories.
5. Operating Instructions
Test Modes:
The DL24/P supports four main operating modes:
- Constant Current (CC) Mode: Maintains a constant discharge current. Set the desired current and cut-off voltage.
- Constant Voltage (CV) Mode: Maintains a constant discharge voltage. Note: This mode cannot test batteries.
- Constant Resistance (CR) Mode: Maintains a constant resistance during discharge.
- Constant Power (CP) Mode: Maintains a constant power output during discharge. Note: This mode cannot test batteries.
Screen display showing the four operating modes.
Device Operation:
- Power On: Connect the DC12V 1A power supply to the device. The fan will start, and the display will show the startup screen.
- Select Test Mode: Use the operation buttons to navigate the menu and select your desired test mode (CC, CV, CR, CP).
- Set Parameters: Adjust the current, voltage, power, or resistance values as needed using the +/- buttons. Set the cut-off voltage and discharge time if applicable.
- Start Test: Press the "Start" button to begin the discharge test.
- Monitor Data: Observe the real-time data on the screen, including voltage, current, power, energy, capacity, and internal/external temperatures.
- Generate Report: After the test is complete (e.g., cut-off voltage reached or time limit expired), a discharge test report will be generated.
- Reset Data: To reset capacity/energy data, long-press the "Setup" button and "Start" button simultaneously.
Online Functions (APP & PC Software):
The DL24/P supports both mobile app and PC software for enhanced control and data logging.
- Mobile APP (Android/iOS):
For iOS, search for "E_test" in the Apple App Store. For Android, search for "E-test" on Google Play or download from mediafire.com. Ensure Bluetooth, location, and storage permissions are enabled on your phone. Open the app, click the Bluetooth icon, and select "DL24-BLE" to connect. This allows remote control, real-time monitoring, and data viewing.
Mobile APP interface showing various functions and data display.
- PC Software (Wired Connection):
Download the PC software from en.atorch.cn. Connect the device to your PC via the provided USB cable. Install the CH340 serial port driver. The software allows reading device current, voltage, power, capacity, and other data, and exporting to XLS format. - PC Software (Bluetooth Wireless Connection):
First, add the DL24-SPP Bluetooth device to your computer's serial port devices. Then, open the downloaded PC software (without installing) and select the newly added Bluetooth serial port model to connect.
PC software interface for monitoring and control.
Protection Functions:
The device includes several safety protections:
- Overload Protection: Triggers if power exceeds 150W (DL24) or 180W (DL24P).
- Overcurrent Protection: Triggers if current exceeds 21A.
- High Temperature Protection: Triggers if internal temperature exceeds 100°C or external probe temperature exceeds 28.5°C.
Screen displays for overload, overcurrent, and high temperature protection.
Product Background Settings:
You can access and modify various settings through the device's menu:
- Press and hold the "OK/Start" button on the measurement interface to enter the menu options.
- Short press the "+"/"-" button to navigate to the "System Settings" icon.
- Short press "Setup" again to enter the system settings interface.
- Use the "+"/"-" buttons to select a setting and adjust its parameters.
Example of Chinese and English background settings menu.
Product Demonstration Video:
A video demonstrating the features and operation of the DL24P 180W load tester, including various input ports, test modes (CC, CV, CR, CP), battery testing, and app connectivity.
6. Maintenance
To ensure the longevity and accurate performance of your ATORCH DL24/P electronic load tester, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Avoid using liquids or abrasive cleaners.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device with care to prevent physical damage. Avoid dropping or subjecting it to strong impacts.
- Ventilation: Ensure the cooling fan is not obstructed during operation to prevent overheating. The fan starts at 55°C and turns off at 45°C, or when power is >10W.
- Power Supply: Always use a stable DC12V 1A power supply. Incorrect voltage or current can damage the device.
7. Troubleshooting
Common Issues and Solutions:
- APP crashes on phone/PC:
For PC software, ensure you are using Windows 7 or 10 (or above). Download and test the software before purchasing. If the software is incompatible, consider using a different computer. For mobile apps, ensure your Android version is 5.0 or above. Some phones (e.g., Samsung) might have compatibility issues; try another phone for pairing and online connection. - Bluetooth connection issues / Blank APP screen:
Ensure Bluetooth is enabled on your phone. For Android, turn on GPS positioning permission. In your phone settings, find the E-test APP and grant location and storage permissions. Reconnect after adjusting permissions. - Incorrect readings/Calibration:
If the voltage or current readings are inaccurate, the device may need calibration. Connect a known accurate voltage source (e.g., 30V) and navigate to the calibration menu (usually item 4 for voltage, item 5 for current at 3A) to confirm the calibration. - Device not discharging at set amperage:
Ensure the power supply for the electronic load is sufficient (DC12V 1A). Check the wiring connections for any loose contacts. Verify that the device under test is properly connected and has sufficient charge. - Device beeps and stops working:
This could indicate a protection trigger (overload, overcurrent, or high temperature). Check the load power, current, and device temperature. Reduce the load or allow the device to cool down. - Cannot test AC load:
This device is designed for DC loads only. It cannot test AC power sources or transformers directly. - Testing batteries with high capacity (e.g., 200Ah):
While the screen digits may show up to 99999mAh (99.999Ah), the device can still test higher capacity batteries. The cumulative capacity will be displayed, and you can perform multiple discharge cycles if needed.
8. User Tips
- Power Supply Compatibility: The provided power supply is typically a DC12V US standard. If your country uses a different standard, you may need to source a local DC12V 1A power supply or use the included US to EU adapter if applicable.
- Software for Testing: While the mobile app is convenient for monitoring, for critical testing and data export, the PC software is generally more robust and recommended.
- Battery Testing: The device is effective for testing various battery types, including 18650, 46950, and other lithium batteries. For high current discharge tests (e.g., 10A or more), ensure proper 4-wire wiring and suitable fixtures to avoid wire voltage drop affecting accuracy.
- Charger Testing: This electronic load can effectively test chargers and power adapters, allowing you to observe their performance under maximum load.
- Low Voltage Cut-off: The device has a minimum voltage cut-off (default 2V) to protect batteries from over-discharge.
- Firmware Updates: Regularly check the official website for firmware updates to ensure optimal performance and access to new features.
9. Warranty & Support
ATORCH products are manufactured under strict quality control. In the unlikely event of a problem, please contact the seller or ATORCH customer support for assistance. Please retain your purchase receipt as proof of purchase.
The product is subject to continuous updates. Please refer to the latest information available on the product webpage or official documentation for any changes or new features.
