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Summary of Contents for Major tech MT247
- Page 1 INSTRUCTION MANUAL MT247 BATTERY INTERNAL RESISTANCE TESTER...
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Page 3: Table Of Contents
Contents Page no 1. Introduction..................4 2. Safety Rules and Precautions ..............4 3. Structure ..................5 4. Interface Display................6 4.1. Interface Icon and symbol Display..........6 5. Measuring Principals................7 5.1. Principle of AC 4-terminal test method..........7 5.2. Principle of voltage measurement..........7 5.3. -
Page 4: Introduction
1. INTRODUCTION The MT247 Universal Rechargeable Battery Internal Resistance Tester is an essential measuring instrument designed to assess the internal resistance, voltage, and temperature of rechargeable batteries like lead storage batteries and lithium batteries, providing crucial insights into battery health. -
Page 5: Structure
meter on charge immediately, otherwise it will lead to measurement errors. • Fully charge the meter every 3 months should it not be used for long periods of time. • To avoid errors during measuring, do not use high-frequency signal generators like mobile phones etc. -
Page 6: Interface Display
4. INTERFACE DISPLAY 4.1. Interface Icon and Symbol Description Indicates the remaining power and charging status of the meter's battery Indicates that the tester has turned on the automatic shutdown function, which is turned on by default Indicates that the tester has turned on Bluetooth connection, and it is turned off by default Indicates that the tester has automatically... -
Page 7: Measuring Principals
5. MEASURING PRINCIPALS 5.1. Principle of AC 4-terminal test method AC Current (I) with a frequency of 1KHz flows between the positive and negative electrodes of the battery, and the AC voltage difference V between the positive and negative electrodes of the battery is measured. The internal resistance of the battery is calculated according to the formula R=V/I (see figure 1). -
Page 8: Test Interface Operation
6.2 Test Interface Operation In the test interface, you can view the current instrument time, measured value, and instrument status information. The functions of the operation buttons are as follows: Key Symbol Short Press Long Press Hold data Enter the settings menu Resistance measurement shift Voltage measurement shift... -
Page 9: Storage Settings
6.3.3. Storage Settings The storage setting interface can be set to maintain, storage mode, memory selection, there are a total of ABCDEFGHIJ ten storage options, if the current memory is full of 500 sets of data, the memory is full (FULL symbol) when storing data, you need to manually set other memory or Only after deleting the current memory data can the new measurement data be stored. -
Page 10: Measurement Procedure
6.4. Measurement procedure 6.4.1. Internal Resistance Measurement 1. Connect the test line to the meter and connect the indication mark (small arrow) of the test line and the indication mark (small arrow) on the machine according to the corresponding colour. 2. -
Page 11: Data Access And Deletion
6.6. Data Access and Deletion On the test page, press the key to enter the reader selection interface, follow the prompts on the page to operate the instrument to select the reader to enter the histogram interface, press the key on the reader selection interface to delete the current reader data, and you can choose whether to delete it according to the prompts. -
Page 12: Noise Frequency Avoidance Function
In the measurement interface of the meter, press to turn on the Bluetooth function on the tester. The smart phone's Bluetooth must be switched on, then open the APP. Search for "BRT" (Abbreviation of Battery Resistance Tester) and connect. After the connection is successful, functions such as wireless measurement and data browsing can be realized. -
Page 13: Maintenance And Service
5. The battery life of the new meter can be charged and discharged about 500 times. When the battery is not durable, you can contact Major Tech to replace it. Do not replace it yourself. 8.2 Repair, Inspection, and Cleaning WARNING: Please do not modify, disassemble, or repair. -
Page 14: Transport
8.2.3. Transport In order to avoid secondary injury caused by impact during transportation, double packaging must be carried out. We do not guarantee the damage caused by transportation. When returning for repair, please write down the fault content and the return address, contact person, telephone and other necessary information on paper with the instrument and send it back to us. -
Page 15: Resistance Measurement Accuracy
9.1.2. Resistance Measurement Accuracy Range Maximum Resolution Test accuracy Measuring Display Current 3mΩ 3.100mΩ 1uΩ ±1% fs. ± 20 dgt. 200mA 30mΩ 31.00mΩ 10uΩ 200mA 300mΩ 310.0mΩ 100uΩ 20mA ±0.5% fs. ± 15 dgt. 3Ω 3.100Ω 1mΩ 9.1.3. DC Voltage Measurement Accuracy Range Maximum Display Resolution... - Page 16 9.2. Technical Specifications continued Function Range Measurement Internal resistance measurement: 1KHz (AC 4-terminal method test method, open-circuit terminal voltage 3V max) Measuring current: 2.0mA~200mA (different measuring currents in different ranges) Temperature measurement: NTC temperature sensor (10KΩ at 26°C) A/D conversion method: Successive approximation type Display update frequency: 5 times/second Response time 200ms...
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Page 17: Accessories
11.2. Appendix 2 Influence of extension cord and induced voltage The quality and structure of the test leads has a certain impact on the measurement results. If you need to extend the test leads, please use the test leads recommended by Major Tech. -
Page 18: How To Reduce Voltage
The content of this user manual cannot be used as a reason for using the product for special purposes. Major Tech is not responsible for other losses caused by use. Major Tech reserves the right to modify the contents of the user manual. If there are changes, no further notice will be given. - Page 20 MAJOR TECH (PTY) LTD South Africa Australia www.major-tech.com www.majortech.com.au sales@major-tech.com info@majortech.com.au...
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