Argus AA360 User manual

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User Manual: AA360, AA1000
BASIC OPERATION
Battery Safety
Batteries can be very dangerous. Please observe common safety guidelines when testing batteries.
AA Series Technical Limitations
AA360 and AA1000 testers are designed to test nearly any lead acid battery with a nominal voltage of 6 or 12V.
Exposing the tester to voltages of more than 20V may permanently damage the tester and such damage is not covered
under the Argus warranty.
Argus Analyzer Tour
Display
1. Screen key
2. Analog display
3. Pass / Fail / Warning icon
4. Overcharge/undercharge icon
5. Compensation mode
6. Internal battery low
7. Printer / memory connected (Printer)

8. Rated value of battery
9. Measured value of battery
10. ‘Start engine’ prompt (Start)
11. ‘Enter’ prompt (Enter)
12. Test standard
13. Selected Voltage
14. Alternator Pass/Fail icon
Input keys
A. Enter/Print, [enter/print]
B. Browse up, [>]
C. Browse down, [<]
Basic Tester Operation
1. Connect test clamps to battery.
2. Select Voltage: Use [>] or [<] to select Voltage, press [enter/print].
3. Select Test Standard: Use [>] or [<] to select test standard, press [enter/print].
4. Enter Battery Rating: Use [>] or [<] to select rated value of battery, press [enter/print].
5. Follow (Start) and (enter) icons to complete testing.
6. Press [enter/print] to view results screens. Press [>] or [<] to view detailed results within a test screen.
7. Press and hold [enter/print] to print/save results (printer module must be connected).
More: Performing a Battery Test
Basic Tester Setup
Follow these steps to set the date / time and other tester preferences.
The tester must be connected to a battery during setup.
If you make a mistake, disconnect, re-connect and enter SETUP mode again.
The printer does not need to be connected to the tester to complete any setup operation.
Enter SETUP mode

After completing a test, press [enter/print] to change the display to the ‘SoC’ page. From the ‘SoC’ page, press and hold
[<] for 3 seconds (until beep). The display clears and the first setup page, ‘Prn’ is displayed. At each setup page,
change the value using [>] or [<], and confirm the value by pressing [enter/print]. After the last setup screen (P-S), all
setup values are stored and the tester returns to normal mode.
Each screen is identified at the top left of the display in order:
1. ‘Prn’ Set Printer language, see table below.
2. ‘Yr’ Set Year.
3. ‘Dat’. Date - set day first, then month.
4. ‘ti’. Time - set hours first, then minutes.
5. ‘Ey’. Easy test mode - select ‘On’ or ‘Off’
6. ‘P-F’. Pass / Fail mode – ‘On’ or ‘Off’.
7. ‘P-S’. Output mode - P=Print, S=Save. Select ‘P’ or ‘P-S’ or ‘S’.
Note: To skip any setup page without making any changes, press [enter/print] to advance to the next page.
More: Tester Setup Options
Printer Language Selection
The AATPR20 can print in 22 languages. The default language is ENGLISH. On the ‘Prn’ page of the setup mode,
select the number for desired language.
1 English
2 French
3 German
4 Dutch
5 Spanish
6 Portuguese
7 Italian
8 Swedish
9 Czech
10 Hungarian
11 Polish
12 Turkish
13 Danish
14 Finnish
15 Russian
16 Japanese
17 Chinese
18 Korean
19 Croatian
20 Greek,
21 Bulgarian
22 Slovenian
Test Report Headline Text
The AA360 and AA1000 series testers allow the user to program up to three lines of custom text to be printed at the top
of the test report. Use the Argus Data Manager Software to set the test report headline text for your tester.
More:

Manual - Basic Operation
Manual - Tester Setup Options
Manual - Performing a Battery Test
Manual - Interpreting Test Results
Manual - Printing and Saving Test Results
Manual - Service and Troubleshooting
Manual - General Information
Manual - Argus Data Manager Software
Version 1.0
Copyright © 2011 by Argus Analyzers, 2/11
User Manual
Support
Argus Data Manager
Copyright 2008-2011 Argus Analyzers :: Terms of Use :: Privacy Policy
How to Buy
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About Argus
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Site Map

Argus Analyzers » CD Home » User Manual » Tester Setup Options
User Manual: AA360, AA1000
TESTER SETUP OPTIONS
There are a number of settings that may be modified to optimize functions for specific users and applications. These
settings are stored in memory and used in all future tests until the settings are again modified.
The tester must be connected to a battery during setup.
If you make a mistake, disconnect, re-connect and enter the SETUP mode again.
The printer does not need to be connected to the tester to complete any setup operation.
Enter SETUP mode
After completing a test, press [enter/print] button to change the display to the ‘SoC’ page. From the ‘SoC’ page, press
and hold [<] for 3 seconds (until beep). The display clears and the first setup page, ‘Prn’ is displayed. At each setup
page, change the value using [>] or [<], and confirm the value by pressing [enter/print]. After the last setup screen (P-
S), all setup values are stored and the tester returns to normal mode.
Each screen is identified at the top left of the display in order. Details for each SETUP page are below.
1. ‘Prn’ Set Printer language.
2. ‘Yr’ Set Year.
3. ‘Dat’. Date - set day first, then month.
4. ‘ti’. Time - set hours first, then minutes.
5. ‘Ey’. Easy test mode - select ‘On’ or ‘Off’
6. ‘P-F’. Pass / Fail mode – ‘On’ or ‘Off’.
7. ‘P-S’. Output mode - P=Print, S=Save. Select ‘P’ or ‘P-S’ or ‘S’.
Note: To skip any setup page without making any changes, press the [enter/print] to advance to the next page.
SETUP Page 1: ‘Prn’ Printer Language Selection
The AATPR20 can print in 22 languages. The default language is ENGLISH. On the ‘Prn’ page of the setup mode, use
the [<] and [>] buttons to select the number for desired language. Confirm the selection by pressing the [enter/print]
button.
1. English
2. French
3. German
4. Dutch
5. Spanish
6. Portuguese

7. Italian
8. Swedish
9. Czech
10. Hungarian
11. Polish
12. Turkish
13. Danish
14. Finnish
15. Russian
16. Japanese
17. Chinese
18. Korean
19. Croatian
20. Greek
21. Bulgarian
22. Slovenian
SETUP Page 2: ‘Yr’ Set the present year.
Use [<] and [>] to select the number for desired year. Confirm the selection by pressing [enter/print].
SETUP Page 3: ‘Dat’ Set the date.
Use [<] and [>] to select the number for the current day of the month. Confirm the selection by pressing [enter/print].
Use [<] and [>] to then select the number for the current month. Confirm the selection by pressing [enter/print].
SETUP Page 4: ‘ti’ Set the current time.
Use [<] and [>] to select the number for the present hour of the day. Confirm the selection by pressing [enter/print].
Use [<] and [>] to then select the minutes. Confirm the selection by pressing [enter/print].
SETUP Page 5: ‘Ey’ Easy Test mode. Select ‘On or ‘Off’ (default.)
Easy Test mode is designed to reduce the number of entries that must be made prior to each battery test. When Easy
Test mode is turned ‘On’, the tester will NOT prompt the user to select ‘voltage’ or ‘rating standard’ prior to each test.
The tester will use the ‘voltage’ and ‘rating standard’ values selected for the PREVIOUS test. This mode is particularly
useful if the tester is being used to repeatedly test batteries of the same voltage and rating standard.
Before setting Easy Test mode to ‘On’, be sure to perform a battery test using the selections for voltage and rating
system that you wish to choose automatically for subsequent tests. Use [<] and [>] to select ‘Easy Test’ mode ‘on’ or
‘off’. Confirm the selection by pressing [enter/print].
SETUP Page 6: ‘P-F’ Pass / Fail mode. Select ‘On’ or ‘Off’ (default.)
Pass/Fail mode is designed to provide ‘Pass’ or ‘Fail’ only test results whenever a reliable Battery Life / State of Health
test result is determined. When ‘Pass / Fail’ mode is turned ‘Off’, there is a range of Battery Life / State of Health
results that are interpreted as ‘Warning’ and trigger a recommendation of ‘Replace Soon’. This recommendation
indicates that the battery has not yet reached end of life, but replacement should be considered soon. When ‘Pass / Fail’
mode is turned ‘On’, all results in the ‘Warning’ range are reported as ‘Pass’.
Pass / Fail mode may be useful when the tester is primarily used to determine the performance of batteries for warranty

purposes.
Use [<] and [>] to select ‘Pass / Fail’ mode ‘on’ or ‘off’. Confirm the selection by pressing [enter/print].
SETUP Page 7: ‘P-S’ Output mode. Select P=Print, S=Save, or ‘P-S’=Print
and Save (default.)
To send the results to the printer only select ‘P’. To save results in memory only select ‘S’. To save results in memory
AND print select ‘P-S’.
When ‘P-S’ is selected, the printed report will include a form where the user can write information related to the test for
later reference. Saved test reports can be analyzed and stored on a computer using the Argus Data Manager software.
Use [<] and [>] to select the desired Output mode. Confirm the selection by pressing [enter/print].
Test Report Headline Text
The AA360 and AA1000 series testers allow the user to program up to three lines of custom text to be printed at the top
of the test report. Use the Argus Data Manager Software to set the test report headline text for your tester.
More:
Manual - Basic Operation
Manual - Tester Setup Options
Manual - Performing a Battery Test
Manual - Interpreting Test Results
Manual - Printing and Saving Test Results
Manual - Service and Troubleshooting
Manual - General Information
Manual - Argus Data Manager Software
Version 1.0
Copyright © 2011 by Argus Analyzers, 2/11
User Manual
Support
Argus Data Manager
Copyright 2008-2011 Argus Analyzers :: Terms of Use :: Privacy Policy
How to Buy
News Room

About Argus
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Site Map

Argus Analyzers » CD Home » User Manual » Performing a Battery Test
User Manual: AA360, AA1000
PERFORMING A BATTERY TEST
Step 1: Connection
Connect the analyzer clamps to the battery terminals. Connect the red clamp to (+) terminal and the black clamp to (-)
terminal. Maximize surface contact between clamp and terminal by rocking the clamp on the terminal to allow the
clamp teeth to dig in.
Always connect the clamps directly to the lead of the battery terminals. Connection to a remote post or to vehicle
ground will affect the test results. Both jaws of each clamp must make contact with the lead of the battery
terminal.
Turn off connected loads or chargers before starting a battery test. Loads or chargers will not effect capacity
testing, but will influence the measurement of state of charge and the results of the Cranking Performance Test.
When a battery connection is made, the analyzer will beep and the screen becomes active if the battery voltage is above
4.7V. If the battery voltage is below approximately 4.7V the battery must be charged before testing can continue.
To reset the analyzer for another test, disconnect one clamp from the terminal and reconnect.
Step 2: Set Test Parameters
At the beginning of each test, choose test voltage, rating standard, and rated value of the battery. The tester algorithms
use these values to determine Battery Life results and recommendations.
Set Test Voltage

After connecting the tester to the battery, the voltage parameter will be flashing. Use the [>] and [<] buttons to select
the correct value (6V or 12V), and press [enter/print] to confirm the selection.
Set Rating Standard
The Argus tester can be used to test ANY 6V or 12V battery, including, WET, MF, GEL, VRLA, AGM, SPIRAL,
NiCad, Li. Select from specific pre-programmed rating standards for all WET, MF, and GEL automotive starting
batteries. For all other batteries and other battery rating systems, select the Ωrating standard.
After choosing the test voltage, the rating standard parameter will be flashing. Use the [>] or [<] buttons to select the
appropriate standard (CA, CCA, EN, EN2, DIN, Ω). Press [enter/print] to confirm the selection .
A battery’s rating standard is printed on the battery, for example ‘530 CCA’ or ‘EN300A’. Refer to the table below
help you select the most appropriate standard.
Application Type Select Rating Standard
Automotive,
Marine Starting or
Dual Purpose
WET, Flooded,
Maintenance
Free, GEL
CCA, CA, EN, EN2,
DIN as printed on
battery label.
Deep Cycle WET, Flooded,
Maintenance Free
Ω
All AGM AGM Ω
All others Ω
If the battery is not rated using CA, CCA, EN, EN2, DIN ratings systems, select Ω.
StandardUnits Description Primary Use

CCA CCA Cold Cranking
Amps, SAE
Standard
USA, Japan. Automotive
Batteries
CA (=
MCA)
CA Cranking Amps
or Marine
Cranking Amps
USA, Marine, dual
purpose batteries.
EN A European Norm Europe, Automotive
Batteries
EN2 A European Norm Europe, Automotive
Batteries
DIN A German Norm Europe, Automotive
Batteries (older)
Ωmohm Internal
Resistance
Generic reference
standard for all batteries.
Select for ALL AGM and
deep cycle batteries.
Set Battery Rated Value
After selecting the rating standard, the screen will flash a line. Use the [>] and [<] buttons to set the Rated Value of the
battery as printed on the battery label. Hold the [>] or [<] button to more quickly change the value. Press [enter/print] to
confirm. The Rated Value is displayed at the bottom of the display.
If you do not know the Rated Value, or if you do not wish to enter a Rated Value, press the [enter/print] button to start
the test procedure.
If you have entered an incorrect battery Rated Value, or selected an incorrect Rating Standard, ‘Battery Life’

results will be incorrect.
If you did not enter a rated value, a ‘Battery Life’ value can not be determined and a recommendation will not be
indicated. However, the measured value of the battery will be displayed.
When using the Ωrating system, a reference value in mΩmust be determined and entered. This value may be
published by the manufacturer or identified by testing a new, charged battery of the same specific model.
Step 3: Testing
After selecting the Rated Value in test setup, the testing process begins automatically.
Basic Diagnostic Test: ‘SoC’ screen
The basic battery diagnostic test screen can be identified by the State of Charge (‘SoC’) in the upper left corner of the
display. The (Enter) prompt flashes on the display. Pressing [enter/print] initiates the Battery Life Test and changes the
display to the Battery Life (‘BL’) screen.
Battery Life Test: ‘BL’ screen
The Battery Life screen can be identified by ‘BL’, in the upper left corner of the display. The (Start) prompt
flashes on the display. Cranking the engine will initiate the ‘Cranking Health’ test.

Cranking Health Test: ‘CH’ screen (AA1000)
The Cranking Health screen can be identified by ‘CH’, in the upper left corner of the display.
The tester is ready to perform the Cranking Health Test when (Start) icon is flashing. The Cranking Health
Test can only be performed on batteries connected to their starting load. If the battery is not connected to a starting load
(starter motor), ignore the Cranking Health Test and rely on the Battery Life Test results for battery performance
information.
1. Turn off all accessory loads before starting the engine (lights, fans, radios, etc.)
2. Crank the engine as prompted by the (Start) icon flashing on the ‘BL’ display.
The analyzer will automatically detect engine cranking and will capture cranking performance data.
Charging System Test
(AA1000)
After the Cranking Health Test is performed (engine started), the tester monitors the electrical system for indications of
charging system faults. The tester monitors voltage and measures voltage ripple to determine alternator function. Icons
and alarms on the ‘CH’ page will indicate any faults detected.
Step 4: Reviewing and Printing/Saving Results
All test results may be reviewed (or printed/saved) until the analyzer is disconnected from the battery. Press [enter/print]
to move sequentially from one test results screen to another (SoC – BL – CH…) Use [>] or [<] to view different results
within a test screen.
If a printer module (AATPR20) is connected, a printer icon (Printer) will be visible on the screen. Results can
be printed, or saved in memory, or both at any time by pressing and holding [enter/print] for 2 seconds (until beep).
More: Printing and Storing Test Results
More:

Manual - Basic Operation
Manual - Tester Setup Options
Manual - Performing a Battery Test
Manual - Interpreting Test Results
Manual - Printing and Saving Test Results
Manual - Service and Troubleshooting
Manual - General Information
Manual - Argus Data Manager Software
Version 1.0
Copyright © 2011 by Argus Analyzers, 2/11
User Manual
Support
Argus Data Manager
Copyright 2008-2011 Argus Analyzers :: Terms of Use :: Privacy Policy
How to Buy
News Room
About Argus
Contact
Site Map

Argus Analyzers » CD Home » User Manual » Interpreting Test Results
USER MANUAL: AA360, AA1000
INTERPRETING TEST RESULTS
Interpreting Basic Diagnotics: ‘SoC’ screen
The state of charge (‘SOC’) indicates the level of battery charge.
1. Graphical section: SoC % indicated numerically and by the analog fan; low charge or overcharge warning icons.
2. Main data section: Measured voltage at the battery
3. Reference and prompts section: Prompt to advance to next screen; rated value
If SoC is below 25%, the (Undercharge) icon illuminates and the tester beeps to indicate that the battery should
be charged before returning to service.
The tester applies a correction factor to the measured capacity results of all batteries with a SoC below 100%. The
purpose of the correction factor is to adjust the measured value to be equivalent to the expected value if the battery were
fully charged.
For maximum accuracy, ensure that all accessory loads are turned off before starting a battery test. Accessory loads
such as lights or fans will depress battery voltage and could lead to an over-correction of measured results.
Interpreting Battery Life Test Results: ‘BL’ screen

Battery Life is an indication of the measured capability to deliver electrical power compared to the rated capability.
1. Graphical section: BL % indicated numerically and by the analog fan; Low charge, Pass, Fail, Warning icons.
2. Main data section: Measured battery capability.
3. Reference and prompts section: Prompt to advance to next screen; Rated value
The analog fan indicates remaining battery life as a percentage. A BL of 100% indicates a battery that is performing at
or above its rated value. A BL of 0% indicates that the battery has reached its end-of-life.
BL is calculated by comparing the battery’s measured performance (automatically adjusted for low state of charge and
temperature) to the battery’s rated value entered during test setup. For Automotive Batteries, it is generally accepted by
manufacturers that a battery has reached ‘end-of-life’ when its measured performance has dropped to 65% of the
battery’s rated value.
The main data display shows the measured performance of the battery (CCA , A, or Ω) based on the Rating Standard
selected during test set-up. The value displayed is corrected for non-standard state of charge and temperature (‘SoC’
and ‘T’ are shown on right side of display.)
- Fail, Replace Now
When Battery Life = 0%, the battery has reached end-of-life. The replace battery indicator illuminates and the unit
beeps three times. Immediate battery replacement is advised.
Depending upon the application, a battery that has 0% battery life (based on the manufacturers specification) may still
have enough capability to remain in service for a period of time. For cranking batteries, the subsequent ‘Cranking
Performance Test’ will provide another indication of a battery’s ability to remain in service.
For some applications or manufacturers, a value other than 65% should be used to determine battery life. In this
situation – do not enter a rated value during test setup and manually perform the following battery life calculation. BL =
(Cm-(Cr*Cu%))/Cr*(1-Cu%). Where Cm = measured value, Cr = rated value, Cu% = target end of life value. )
~ (alternating) – Warning, Replace Soon
When Battery Life is between 1% and 50%, the warning indication, (Pass) icon] ~ (Fail) icon (alternating pass / fail
icon) illuminates, indicating low battery life This condition indicates that the battery has less than half of its useful life

remaining and replacement should be considered soon.
NOTE: If ‘Pass/Fail’ mode is turned ‘On’, the ‘Warning’ indication is disabled and the ‘Pass’ indication is displayed.
The printed recommendation will be ‘Continue to Use’.
- Pass, Continue to Use
When Battery Life is above 50%, the (Pass) icon illuminates. The battery retains more than half of its useful life and
should continue to be used.
+ - Charge and Continue to Use
When the Battery Life is above 50%, but the State of Charge is below 75%, the (Pass) icon and (Undercharge) icon
illuminates. The battery is good but should be charged before returning to service.
- Charge and Re-test
If the State of Charge was 0% at the start of the test, and depending upon the measured capacity value, the tester may
not be able to make an accurate Battery Life calculation. In this case, a pass / fail result is not shown. The battery must
be charged and tested again.
NOTE: If a reference value was not entered during test set up, Battery Life cannot be calculated. In this case, the
measured value will be displayed, but Battery Life and pass / fail results will not be indicated.
By pressing [>] or [<] the main data display will change sequentially to display the following in order:
measured performance (CCA, A, or Ω) with SoC and T correction applied
measured performance (CCA, A, Ω) without correction
battery internal resistance in milliohms (mΩ)
battery conductance in siemens (MHO)
The recommendations (warning, pass, fail) are determined using the SoC and T corrected values only.
Interpreting Cranking Health Results: ‘CH’ screen
(AA1000)
Cranking Health (CH) indicates how the battery performed cranking the engine.

1. Graphical section: CH % indicated numerically and by the analog fan; Low charge, Pass, Fail, Warning icons.
2. Main data section: Measured lowest voltage during cranking.
3. Reference and prompts section: Prompt to advance to next screen; Rated value
The Cranking Health is the actual cranking performance of the battery shown as a percentage. A result of 100%
Cranking Health is the starting performance expected from a properly sized, fully charged, new battery. A result of 0%
Cranking Health implies imminent starting failure.
If Cranking Health is below 40% during normal temperatures (10° - 30°C), expect cranking failure if the temperature
becomes cold (< 0°C.) Consider replacing battery now, in advance of failure.
Cranking performance and CH results are dramatically affected by temperature. If battery temperature is very low,
below -15°C, poor cranking health (CH%) is expected even for a healthy battery. Replacing a battery may not help in
these conditions.
A drained battery can also affect cranking performance and CH results. If SoC is below 75%, recharge the battery and
test again.
Cranking performance and CH results will be lower the first time an engine is started after a long period of rest. A cold
engine and cold lubrication will result in a high starting load. A warm engine will be easier to start and CH values will
be higher. Use the lower value to inform your replace battery decision.
– Fail, Replace Now
When CH = 0%, the replace battery indicator illuminates and the analyzer beeps three times. Crank failure is imminent
and immediate battery replacement is advised.
~ (alternating) - Warning, Replace Soon
When CH is between 1% and 50%, the Warning indication, alternating pass / fail icons, illuminate, indicating weak
cranking health. The battery can effectively crank the engine, but performance is weak. Consider replacement soon.
– Pass, Continue to use

When Cranking Health is above 50%, the (Pass) icon illuminates. Continue to use the battery.
Charging System Test
(AA1000)
After the Cranking Health Test is performed (engine started), the tester monitors the electrical system for indications of
charging system faults. The tester monitors voltage and measures voltage ripple to determine alternator function.
Charging system test results are indicated on the CH screen using the following icons.
– Alternator Pass, voltage and ripple OK
When the alternator is operating at the correct voltage and the diode ripple is within limits, the [alt pass icon] icon
illuminates.
– Alternator Fail, not working
When the alternator is not producing adequate voltage, or if the alternator ripple is out of limits, indicating a diode
failure, the alternator failure indicator illuminates.
Note: On some vehicles, the alternator output is managed by a control system. The control system may not activate
immediately after engine start. If alternator output is not apparent after engine start, turn on some accessory loads (air
conditioning, cabin fan, headlights) and monitor the alternator icon after one minute.
- Alternator Undercharge
If the alternator output is below 13.2, the (Undercharge) icon illuminates. The alternator is not producing sufficient
current or voltage to charge the battery.
- Alternator Overcharge
If the alternator output is above 15.2V, the overcharge icon illuminates. The voltage regulator in the alternator should be
tested. Chronic overcharge of the battery can cause premature battery failure.
Reviewing Results
All test results may be reviewed (or printed/saved) until the analyzer is disconnected from the battery. Press the ‘enter’
button to move to another test results screen. Use [>] or [<] to view different results within a test screen.
To print or save a test report (with connected printer/memory module) press and hold [enter/print] for 2 seconds (until
beep).
Each test is distinct and analyzes a different aspect of the battery and starting system. It is not uncommon for the
Battery Life test to indicate a battery failure and the Cranking Health test to pass the battery. When testing starting

batteries, the combination of Cranking Health and Battery Life test results can be used to help identify other battery and
system problems, and better inform a battery diagnosis. Use the test comparison table to identify possible testing errors,
and electrical system problems.
Battery Life Test Results (BL)
0% FAIL ~ 1 – 50% WARNING 51 – 100% PASS
Cranking
Health Test
Results
(CH)
0%
FAIL
TESTS AGREE
FAIL: Replace
Battery Now
1. Check Correct
Rating Entered in
tester and retest
2. Check/repair
Starting System
and retest
3. Check Battery
Size (too small?)
1. Check Correct Rating
Entered in tester and
retest
2. Check/repair Starting
System and retest
3. Check Battery Size
(too small?)
1 – 50%
WARNING
1. Check
Correct
Rating
Entered in
tester and
retest
2. Check battery
size
(too large?)
TESTS AGREE
WARNING: Replace
Battery Soon
1. Check Correct Rating
Entered in tester and
retest
2. Check/repair Starting
System and retest
3. Check Battery Size
(too small?)
51 – 100%
PASS
1. Check
Correct
Rating
Entered in
tester and
retest
2. Check battery
size
(too large?)
1. Check Correct
Rating Entered in
tester and retest
2. Check battery size
(too large?)
TESTS AGREE
PASS: Battery OK