Major tech MT245 User manual

INSTRUCTION MANUAL
CAR BATTERY TESTER
MT245

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Contents Page no
1. Product Summary.................................................................................4
1.1. Product Profile............................................................................4
1.2. Product Function........................................................................4
1.3. Technical Parameters..................................................................5
1.4. Working Environment Requirement..............................................5
2. Product Information..............................................................................5
2.1. Tool Description..........................................................................5
2.2. Product Specifications.................................................................5
2.3. Accessories Included...................................................................6
3. Operating Instructions...........................................................................6
3.1. Usage and Operation...................................................................6
3.1.1. In Vehicle Battery Test......................................................7
3.1.2. Battery Out-Of-Vehicle.....................................................9
3.1.3. Starting System Test......................................................12
3.1.4. Charging System and Ripple Test.....................................13
3.2. Waveform Monitoring................................................................15
3.3. Playback.................................................................................17
3.4. Printing Data............................................................................17
3.5. Introduction to Setting Options...................................................18
3.6. Introduction to Options..............................................................19
4. Maintenance.....................................................................................19
4.1. Cleaning...................................................................................19
4.2. Transport and Storage...............................................................19

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1. PRODUCT SUMMARY
1.1. Product Profile
The MT245 Battery Tester adopts currently the world's most advanced
conductance testing technology to easily, quickly and accurately measure
the actual cold cranking amps capability of the vehicle starting battery,
healthy state of the battery itself, and common fault of the vehicle starting
system and charging system, which can help maintenance personnel to
find the problem quickly and accurately, thus to achieve quick vehicle
repair.
ŸTest all automotive cranking lead acid battery, including ordinary lead
acid battery, AGM flat plate battery, AGM spiral battery, and Gel battery,
EFB battery, etc.
ŸDirectly detects bad cell batteries.
ŸPolarity reverse connection protection, reverse connection will not
damage the tester or affect the vehicle and battery.
ŸDirectly test the battery with loss of electricity, no need to fully charge
before testing.
ŸTesting standards include currently the world's majority of battery
standards, CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE, GB.
1.2. Product Function
Main functions of the MT245 battery tester include: battery test, starting
system test, charging system test and other additional functions.
Battery test is mainly targeted to analyze the battery healthy status to
calculate the actual cold cranking capability of the battery and the aging
extent, which provide reliable analysis evidence for the test and
maintenance of the battery. It notifies the use to replace the battery in
advance when the battery is getting older.
Starting system test is mainly to test and analyse the starting motor.
Through testing the actual required cranking current and cranking voltage
of the starting motor, it can find out whether the starting motor works
fine. There are several reasons why the starting motor is abnormal:
lubricating system fault causing the starting loaded torque increasing or
rotor friction of the starting motor causing the increasing friction of the
starting motor itself.
Charging system test is to check and analyse the charging system,
including generator, rectifier, rectifier diode, etc., thus to find out whether
the output voltage of the generator is normal, the rectifier diode works
fine and the charging current is normal. Suppose one of the above
mentioned parts is not in a normal situation, it will lead to over charge or
incomplete charge of the battery, thus the battery will be quickly damaged
and also greatly shorten the using life of other loaded electrical appliance.

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1.4. Working Environment Requirement
Working Environment Temperature: -20°C to 50°C
It is applicable for automotive manufacturers, automotive maintenance
and repair workshops, automotive battery factories, automotive battery
distributors and educational organizations, etc.
Measure Standard Measure Range
CCA 100-2000
BCI 100-2000
CA 100-2000
MAC 100-2000
JIS 26Al 7--245HS2
DIN 100-1400
IEC 100-1400
EN 100-2000
SAE 100-2000
GB 100-2000
Ÿ Test clamp: Double
conductor Kelvin clamp
Ÿ Measuring battery range:
30Ah-200Ah
Ÿ Voltage measurement
range: 8V-30V DC
Ÿ Support USB printing
(connected to the
computer)
Ÿ Support QR code (the
mobile phone can scan QR
code to obtain test results)
2. PRODUCT INFORMATION
2.1. Tool Description
ŸUp / Down Button: Select upwards or
downwards via white UP and DOWN
keys.
ŸExit Button: Exit to previous menu via
the EXIT key.
ŸEnter Button: Confirm the selection via
the ENTER key
ŸMini-USB Port :Connects to computer for
printing via USB cable.
2.2. Product Specifications
1. Display: 2.4" TFT 240x320 pixels color LCD display
2. Operating Temperature: 0°C to 50°C (-32°F to 122°F)
3. Storage Temperature: -20°C to 70°C (-4°F to 158°F)
1.3. Technical Parameters
ŸApplication: 12V starting battery and 12V/24V car starting / charging
system test
ŸCold Cranking Amps Measure Range:

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3. OPERATING INSTRUCTIONS
Testing Out-of-Vehicle:
Clean the battery posts or side terminals with a wire brush. For testing
side-post batteries, install and tighten the lead terminal stud adapters.
Failure to properly install the stud adapters, or using stud
adapters that are dirty or worn, may result in false test results.
Do not use steel bolts.
Testing In-Vehicle:
Turn off the vehicle and all accessory loads. Testing with the ignition
switch on or vehicle loads on may cause damage.
WARNING: Battery terminals, terminals and related accessories
contain lead and lead compounds, which are known to cause cancer,
birth defects or other reproductive hazards. Wash hands after
treatment.
4. Power-provided via cable from car battery
5. Dimensions: LxWxH: 784mm x 355mm x 210mm
6. Weight: 293g
2.3. Accessories Included
1. User's Manual
2. USB Cable -- Provides link to unit and computer for printing
3.1. Usage and Operation
1. Clip the red and black clips of the tester onto the battery to be tested,
the red is positive and the black is negative, and the tester display
shows the boot interface. If the measured battery voltage is lower
than 8.0V, the test cannot be
performed normally. Press the
'ENTER’ button to continue.
2. According to the prompts of
the tester, press the up and
down keys to select:
The main menu contains six
function options: battery
power, waveform monitoring,
playback, printing, settings
and about.

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WARNING: Risk of electrocution. High-voltage circuits, both AC and
DC, are very dangerous and should be measured with great care.
3.1.1. In Vehicle Battery Test
Ÿ The off vehicle test indicates that the
battery is not connected to the vehicle.
Clamp the red and black clamps of the
tester onto the tested battery, connect
the red to the positive and the black to
the negative, and the display screen will
immediately display the start-up
interface. The main interface appears 2
seconds after start-up.
Ÿ Press UP/DOWN key to select the
battery level, then press the ENTER key
to confirm.
Ÿ Press UP/DOWN key to select in vehicle
measurement, then press the ENTER
key to confirm.
Ÿ When the tester detects the surface
charge, it will prompt "surface charge,
turn on the lamp". Turn on the lamp as
prompted to remove the battery surface
charge, and the tester will display the
following messages in sequence: Battery
test
1. Select Battery Type
After selecting the battery charging state, the tester will prompt to select
the battery type, that is, select ordinary battery, AGM flat battery, AGM
winding battery, gel battery and EFB battery. Press the UP/DOWN key to
select the battery type, and then press the ENTER key to confirm.
Battery type selection
1. Ordinary battery
2. AGM flat battery
3. AGM wound battery
4. GEL
5. EFB
2. Battery Standard Selection:
The battery tester will test each battery according to the selected system
and rating. Press the UP/DOWN key to select according to the actual
system standard and the rating marked on the battery. Press the UP/DOWN

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key to select according to the actual
system standard and the rating marked
on the battery. See the position
indicated by the arrow in figure 1.
CCA: Cold starting current specified by SAE and BCI, the most commonly
used value when starting the battery at -18°C (0°F).
BCI: International standard of battery Committee
CA: Standard turning current, effective starting current value at 0°C
MCA: Marine turning gear current standard, effective starting current
value at 0°C.
JIS: Japanese industrial standard, which is displayed on the battery in
combination of numbers and letters, such as 55d23 and 80d26.
DIN: Standards of German automobile industry committee
IEC: Internal electronic technical committee standards
EN: European Automotive Industry Association standards
SAE: Society of Automotive Engineers standards
GB: Chinese national standard
3. Selection Of Rated Capacity
It refers to the factory starting current standard of the battery, which can
be seen directly above or in front of the battery, such as CCA 600A
The rated range is as follows:
Figure 1.
Measure Standard Measure Range
CCA 100 - 2000
BCI 100 - 2000
CA 100 - 2000
MAC 100 - 2000
JIS 26Al 7 - 245HS2
DIN 100 - 1400
IEC 100 - 1400
EN 100 - 2000
SAE 100 - 2000
GB 100 - 2000

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JIS REFERENCE CHART
Press the UP/DOWN
key, input the correct
test standard and grade,
press the ENTER key,
and the tester starts the
test.
It takes approximately 2
seconds to display the
battery test results.
JIS CCA
26B17L 185
28B17L 195
28B19L 190
32C24L 195
34B17L 240
34B19L 240
36B20L 260
38B19L 265
38B20L 265
44B20L 300
46B24L 295
48D26L 250
50B24L 325
50D20L 310
55B24L 370
55D23L 320
55D26L 290
65D23L 370
65D26L 370
65D31L 340
70D23L 420
JIS CCA
75D23L 465
75D26L 450
75D31L 380
80D26L 490
95D31L 565
95E41L 475
105D31L 655
105E41L 540
115E41L 610
115F51 575
130E41L 680
145F51 735
145G51 685
150F51 765
165G51 710
170F51 925
180G51 860
190H52 765
195G51 930
210H52 910
245H52 1170
3.1.2. Battery Out-Of-Vehicle
The off vehicle test indicates that the battery is not connected to the
vehicle. Clamp the red and black clamps of the tester onto the tested
battery, connect the red to the positive and the black to the negative, and
the display screen will immediately display the start-up interface. The
main interface appears 2 seconds after start-up.
1) Press the UP/DOWN key to
select the battery power, and
press the ‘ENTER’ key to confirm.
2) Select external battery test
and press ‘ENTER’ to confirm.

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4) Enter the standard, press
UP/DOWN to scroll through,
and press ‘ENTER’ to confirm.
3) Battery type, press
UP/DOWN to select the type,
and press ‘ENTER’ to confirm.
5) Rated capacity: press the
UP/DOWN keys to select the
rated capacity of the battery,
and press ‘ENTER’ to confirm.
The meter starts the test & displays the battery test results after 2 seconds.
The battery test results include the following five types:
1. Good Battery
CCA rating: 500A CCA: 490
Internal resistance: r=6.lmΩ
Battery voltage: 12.64V
Battery life: 100%
Power percentage: 100%
The battery is in perfect condition

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2. Good Battery but Recharge
CCA rating: 500A CCA: 490
Internal resistance: r=7.2mΩ
Battery voltage: 12.20V
Battery life: 78%
Power percentage: 30%
The battery has good performance but low current. Please recharge.
3. Replace Battery
CCA rating: 500A CCA: 490
Internal resistance: r=l8.lmΩ
Battery voltage: 12.68V
Battery life: 46%
Power percentage: 80%
If the battery is flat or about to go flat, replace the battery.
4. Bad Battery
CCA rating: 500A CCA: 490
Internal resistance: r=45.2mΩ
Battery voltage: 10.64V
Battery life: 0%
Power percentage: 20%
If the battery is internally damaged or short circuited, replace the battery.
5. Charge, Retest
CCA rating: 500A CCA: 490
Internal resistance: r-30.lmΩ
Battery voltage: 12.08V
Battery life: 39%
Power percentage: 20%
Unstable batteries should be recharged and tested to avoid errors. If the
same test result occurs after charging and retesting, the battery is
considered damaged and must be replaced.
Note: if the "replacement" is caused by the in car mode, it may be due to
the poor connection between the vehicle cable and the battery.
Before deciding to replace the battery, make sure to cut off the cable
and retest the battery of the vehicle.
Note: after the test, if you need to exit, press the exit key to exit directly to
the start-up interface. After test: if it is in the "in vehicle" test status,
press enter to enter the climb test.

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3.1.3. Starting System Test
Ÿ Clamp the red and black clamps of the
tester on the tested battery, connect
the red to the positive pole and the
black to the negative pole, and the
display screen will immediately display
the start-up interface.
Ÿ The main interface appears 2 seconds
after start-up. Press the UP/DOWN key
to select the battery level, then please
select 'In vehicle', and then press
ENTER to confirm.
Ÿ Press the UP/DOWN keys to select
'starting system test', and then press
the “ENTER” key to confirm.
1. The climb test is normal, and the test result example 1 is displayed.
Climb test
Time: 6810ms
Maximum: 11.55V
Minimum: 10.24V
The starting voltage is normal
2. When the climb test is abnormal, the test result example 2 is displayed.
Climb test
Time: 15020ms
Maximum: 9.05V
Minimum: 8.55V
Low starting voltage
Note: Prepare before the test. If the car is starting, please turn off the
engine and turn the key to the "OFF" position. Before starting the system
test, it is necessary to test whether the "CCA" of the battery is normal. If
the function of the battery itself is abnormal, the test data of the starting
system will be abnormal. After the test, do not shut down the engine, press
EXIT to enter the next charging system test.

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3.1.4. Charging System And Ripple Test
When entering the charging test, please
select "charging test" and press enter.
Step on the accelerator, turn the engine
speed to more than 2500rpm, and click
the “ENTER” key of the instrument to
start the charging test.
Test result: if the charging voltage reading is greater than 15.5V, please
check the voltage regulator.
If the reading is greater than 13.3V and less than 15.5V, the charging
system is normal.
If the reading is less than 13.3V, check the connection point, wires and
generator.

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Note: Do not shut down the engine during the test. All electrical
appliances and equipment are turned off. Switching on/off any
electrical appliance in the vehicle during the test will affect the
accuracy of the test results.
The tester will perform the following tests in sequence:
For ripple test, the tester will display real-time ripple, and display
ripple voltage and charging voltage value at the bottom line. The
ripple test takes approximately 6 seconds.
After the ripple test, the tester will automatically start the load voltage
test.
Charging test
Load test
****
The load voltage test takes about 3 seconds, and then prompts "step on
the throttle to increase the engine speed"
Charging test
Increase the speed to 2500rpm
Hold for 5 seconds. Press OK to continue.
Operate accordingly to increase the engine speed to 2500rpm or above
for 5 seconds.
When the speed increase is detected, the tester starts the charging
voltage test.
Charging test
Test
****
After the test, the tester displays the effective charging voltage, ripple test
results and charging test results.
Starting test
Load 14.16V
No load 14.39V
Replace 15MV
Normal charging
Note: If no increase in speed is detected, it should be a failure of the
generator regulator or a failure of the connection to the battery.
The tester will try 3 further tests. If it still fails, it will skip the
speed increase test, and the test result shows "no voltage output".
See below:
Check the connection between the generator and the battery and retest.

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3.2. Waveform Monitoring
From the startup screen press EXIT button to enter Main Menu. Press the
UP/DOWN button to select the [Waveform] function and press ENTER, the
screen will display the interface as shown below
Charging test results:
1. Charging voltage: normal
The charging system shows that the generator output is normal and no
problem is detected.
2. Charging voltage: low
The charging voltage of the charging system is low.
Check whether the generator drive belt slips or deviates. Check whether
the connection between the generator and the battery is normal. If the
drive belt and connections are in good condition, troubleshoot the
generator according to the manufacturer's recommendations.
3. Charging voltage: high
The generator output voltage is high.
Since most automotive generators use internal regulators, the generator
assembly must be replaced (some older cars use an external regulator
and then replace the regulator directly.) The maximum normal high
voltage of the voltage regulator is 14.7V ±0.5V. If the charging voltage
is too high, the battery will be overcharged. As a result, the battery life
will be shortened and failure will occur.
4. No voltage output:
No generator voltage output detected. Check whether the generator
connecting cable and belt are normal.
5. Diode test:
By testing the charging current ripple, the tester will know whether the
diode is normal. When the ripple voltage is too high, at least one diode
is damaged. Check and replace the diode.
So far, all tests have been completed.

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CUR: Current Voltage
MAX: Maximum Voltage during lgnition
MIN: Minimum Voltage during Ignition
The waveform will stay in static until there's changes in the voltage
detected.
Various vehicle voltage analyses.
Ÿ Discharge Voltage: When the Ignition OFF engine OFF (Over 20
Minutes) the Discharge
Ÿ Voltage should be around 12V. If the discharge voltage is lower than
11V it will be hard to turn the ignition ON. lf the discharge voltage
continuously stays under 11V it means the battery is aging and
replacement is needed.
Ÿ Starting Voltage: During ignition, the voltage will drop to a certain
point, at this minimum point is Starting Voltage (Around 7.5-9.5V). If
the Starting Voltage continuously stay under 7.5V it means battery
capacity is low and needs to be replaced.
Ÿ Charging Voltage: When the ignition ON engine ON. The alternator will
continuously charge the car battery, normally is around 14V.
Battery Status corresponding with Battery Voltage (Before Ignition)
Battery Voltage Battery Status Effects and Measures
<10.8V Too Low Hard to start vehicles replace battery
10.8V-11.8V Slightly Low Hard to start vehicles

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Battery Status corresponding with Battery Voltage (After Ignition)
Battery Voltage Battery Status Effects and Measures
12.8V-13.2V Too Low Battery may not be charged; Check
alternator or other electrical load
13.2-14.8V Normal Normal
>14.8V High Voltage May damage the battery Check
alternator stabilizer
Battery Status corresponding with Battery Voltage (After Ignition)
3.3. Playback
Ÿ Clamp the red and black clips on the positive and negative electrodes
of the battery correctly.
Ÿ Use the up and down buttons to select on the playback icon and press
enter.
Ÿ Use the "up" and "down" buttons to select the data saved during the
previous test and the waveform diagram for starting the test, and then
press "enter" to view.
Ÿ Press the exit key to return to the previous menu.
3.4. Printing Data
Before using the print data function, the tool must be connected to the
computer via
USB
When the cable is ready, insert the CD into the computer
1. first install the USB driver.
1. then open the printing software
2. select the COM port number.
If there are some data histories in
the printing software, clear them.
3. Use the "up" and "down" buttons,
select "upload test results" in the
options, and press “ENTER” to
confirm.

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5. After the data is transferred to the computer, the printing software will
display this information. For example;
CCA rating: 500A CCA:490
Internal resistance: r=6.lm Ω
Battery voltage: 12.64V
Battery life: 96%
Power percentage: 100%
Good battery
Or select 'my QR code', and press enter, and the
mobile phone can scan the QR code to obtain
measurement information.
6. Press exit to return
3.5. Introduction To Setting Options
In the setting options, you can set the language, buzzer sound switch and
equipment test and debugging settings:
1. Language: select the desired language. Click OK in the language
column to enter the next level of language settings, use the "up" and
"down" buttons to select the required language, then press the
"ENTER" button to save the selection and press the exit button to
return to the previous menu.
2. Buzzer: buzzer sound switch setting. Click the buzzer option to enter
the next level of sound switch settings, use the "up" and "down"
buttons to select whether the sound is on or off, then press the
"ENTER" button to save the selection and press the exit button to
return to the previous menu.
3. Equipment Test: check the color screen RGB three colours and
confirm whether the four operation keys are normal.
4. Bluetooth Function: Activate the Bluetooth function to transfer data
from the instrument to the APP.
1) Download Meterbox Pro APP to connect with the meter to get more
functions. Search the APP name Meterbox Pro on the App Store (for
iOS) or Google play (for android).
2) Select the setting option and press the ENTER key to open the menu.
3) Then press the "Up" and "Down" keys to select the Bluetooth setting
option, press ENTER again to open the next menu.
4) Press the "Up" and "Down" keys to turn the Bluetooth function
ON/OFF.
5) Press the EXIT key to exit the current menu.

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3.6. Introduction To Options
About: display instrument software, hardware version and production
date.
1. After power on, use the up and down buttons to select about options
2. Then press the “ENTER” button to enter the next menu to view the
software, hardware version, production date and other relevant
information of the instrument.
3. Press exit to return to the previous menu.
4. Maintenance
When using the test adapter in compliance with the user manual, no
special maintenance is required. However, should functional errors occur
during normal operation, the after sales service will repair your instrument.
Please contact the local service office.
4.1. Cleaning
If the tester needs to be cleaned after daily use, use a damp cloth and
mild household detergent.
Before cleaning, disconnect the tester from all measuring circuits.
Do not use acid detergent or solvent liquid for cleaning.
After cleaning, do not use the tester until it is completely dry.
4.2. Transport And Storage
Please keep the original packaging for future transport (e.g.,if calibration is
necessary). Any transport damage due to faulty packaging will be excluded
fromwarranty claims.
The tester must be stored in dry, closed areas. In case of an adapter being
transported in extreme temperatures, a minimum recovery time of 2 hours
is required prior to any operation
For customer support, please contact your dealer or dealer directly.

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