1. Introduction
The Gaqqee MDL150 Battery Tester is a versatile electronic load discharge and charging tester designed for precise battery capacity detection. Featuring a 2.4-inch high-definition color screen, it provides vivid and intuitive data display. This device incorporates accurate temperature control and multiple safety protections, making it a reliable tool for various electrical testing applications.
2. Package Contents
- MDL150 Battery Tester x 1
- Power Adapter x 1
3. Product Features
- 2.4-inch Color Screen: High-definition display for clear and visible data.
- Accurate Temperature Control: Equipped with an NTC sensor for real-time temperature monitoring, ensuring reliable test results and preventing errors.
- Bilingual Interface: Supports both Chinese and English for convenient operation.
- Four-fold Safety Protection: Automatic protection against overvoltage, overcurrent, overheating, and overpower.
- One-click Reset: Simplifies data management by quickly resetting accumulated data.
4. Product Overview
Familiarize yourself with the components of your MDL150 Battery Tester:
Component Identification:
- Encoder: Used for navigation and parameter adjustment.
- Menu Buttons: Access various settings and options.
- Run/Stop Button (R/S): Initiates or terminates a test program.
- Switch (ON/OFF): Main power switch for the device.
- Work Indicator Light: Indicates the operational status of the tester.
- 6P Test Access Terminal: Multi-pin terminal for connecting test leads.
- 2.4-inch Display Screen: Shows real-time data and menu options.
- DC5.5 * 2.5 Power Supply Terminal: Connects to the DC12V 1A working power supply.
- Cooling Fan: Automatically activates for temperature regulation.
5. Setup
- Power Connection: Connect the provided DC12V 1A power adapter to the DC5.5 * 2.5 power supply terminal (8) on the rear of the tester.
- Device Power On: Flip the ON/OFF switch (4) to power on the device.
- Test Lead Connection:
- For a four-wire system, connect the test leads to the A+, V+, V-, A- terminals on the 6P test access terminal (6).
- The device is downward compatible with a two-wire system.
- External Temperature Sensor (Optional): If external temperature measurement is required, connect an NTC 3950 10K 1% temperature sensor to the dedicated NTC sensor terminal.
6. Operating Instructions
6.1. Menu Navigation
The tester features a menu system for configuration. Use the Encoder (1) to navigate and the Menu buttons (2) to select options.
- Chinese/English: System language switching.
- Clear Cumulative: Resets accumulated data.
- Current & Voltage Clear Zero (No load): Clears no-load voltage and current readings.
- Voltage Calibration Ref 30V: Calibrates voltage reference.
- Current Calibration Ref 3A: Calibrates current reference.
- Display Brightness: Adjusts screen brightness (0-9).
- Standby Time: Configures screen sleep and standby settings.
- Reset: Restores factory settings.
- Exit: Exits the menu.
6.2. Display Information
The 2.4-inch display provides comprehensive real-time and accumulated data:
- Voltage (Vol): Real-time voltage (V).
- Current (Cur): Real-time current (A).
- Power (Pwr): Real-time power (W).
- Accumulated Test Power (Ene): Total energy discharged (Wh). (1 kWh = 1000 Wh)
- Accumulated Testing Capacity (Cap): Total capacity discharged (Ah).
- Load Impedance (Res): Calculated load resistance (Ω).
- Accumulated Running Time: ddd~hh: mm: ss (day: hour: minute: second).
- Internal Temperature (IN): Temperature near the core discharge area.
- External Temperature (OUT): Temperature monitored by the external NTC sensor.
- Time Limit: Configures limited time discharge (e.g., "00:03" for 3 minutes). "--:--" indicates unlimited discharge.
- Stop Discharge Voltage (-vol-): Sets the low-voltage protection threshold.
6.3. Working Modes
The tester supports three primary working modes:
- CC (Constant Current Mode): Maintains a constant discharge current.
- CP (Constant Power Mode): Maintains a constant discharge power.
- CR (Constant Resistance Mode): Maintains a constant discharge resistance.
Use the encoder to set the desired discharge parameters (current, power, or resistance) for the selected mode.
6.4. Starting and Stopping a Test
- After setting all parameters, press the Run/Stop button (3) to start the discharge program.
- Press the Run/Stop button (3) again to stop the program.
7. Protection Features
The MDL150 Battery Tester includes multiple safety protections to ensure safe operation:
- OVP (Overvoltage Protection): Adjustable up to 150V. Triggers if voltage exceeds the set limit.
- OCP (Overcurrent Protection): Adjustable up to 20A. Triggers if current exceeds the set limit.
- OPP (Overpower Protection): Adjustable up to 150W. Triggers if power exceeds the set limit.
- OTP (Over Temperature Protection): Triggers if the internal temperature exceeds 75 °C.
- Voltage Limited Discharge (Low-Voltage Protection): Supports setting a minimum voltage threshold to stop discharge. Defaults to no voltage limited discharge.
When a protection is triggered, the display will show the corresponding status (e.g., OVP, OCP, OPP, OTP).
8. Maintenance
- Cooling: The programmable fan automatically runs when the internal temperature is ≥ 40 °C or the current is > 3A to ensure optimal operating temperature. Ensure the cooling fan (9) is not obstructed.
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquid cleaners.
- Storage: Store the device in a dry, cool place away from direct sunlight and extreme temperatures.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Power adapter not connected or faulty; ON/OFF switch is off. | Ensure power adapter is securely connected and functional. Flip the ON/OFF switch to the 'ON' position. |
| Test program stops unexpectedly. | One of the protection features (OVP, OCP, OPP, OTP) has been triggered. | Check the display for protection status. Adjust test parameters or ensure the battery/load is within safe operating limits. Allow the device to cool if OTP is triggered. |
| Inaccurate readings. | Calibration issues; loose connections. | Ensure all connections are secure. Perform voltage and current calibration via the menu. Reset to factory settings if necessary. |
| Screen is dim or blank. | Display brightness setting is low; device is in standby mode. | Adjust screen brightness in the menu. Wake the device from standby if applicable. |
10. Specifications
| Parameter | Value |
|---|---|
| Working Voltage | DC12V (with 12V 1A power adapter) |
| Load Voltage (U) | DC0~150V |
| Load Current (I) | DC0~20A |
| Load Power (P) | 0-150W (max 60W above 120V) |
| Electricity Metering Limit | 99999.9Wh |
| Capacity Measurement Limit | 99999.9Ah |
| Accumulated Timing Range | ddd: hh: mm: ss |
| Working Modes | CC (Constant Current), CP (Constant Power), CR (Constant Resistance) |
| Overvoltage Protection (OVP) | Adjustable up to 150V |
| Overcurrent Protection (OCP) | Adjustable up to 20A |
| Overpower Protection (OPP) | Adjustable up to 150W |
| Over Temperature Protection (OTP) | Triggers at internal temperature > 75 °C |
| Limited Time Discharge | Supports up to 99 hours and 59 minutes |
| Cooling Method | Programmable fan (activates at ≥ 40 °C or current > 3A) |
| External Temperature Sensor | NTC 3950 10K 1% (measures 0-100 °C) |
| Product Size (L x W x H) | 195 x 98 x 88mm (7.68 x 3.86 x 3.46 inches) |
11. User Tips
- For accurate readings, ensure all connections are tight and use appropriate gauge wires for high current applications.
- Regularly check the cooling fan for obstructions to prevent overheating, especially during prolonged high-power discharge tests.
- Utilize the one-click reset feature to clear accumulated data before starting a new test to avoid confusion.
- If performing sensitive measurements, consider performing a voltage and current calibration from the menu.
12. Warranty and Support
For detailed warranty information and technical support, please refer to the official product documentation. A user manual in PDF format is available for download and can be referenced for further details: MDL150 Battery Tester User Manual (PDF).
