Midtronics CPX-900 WiFi User manual

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CPX-900
1
For testing 6 and 12-volt automotive batteries and
12- and 24-volt charging systems
User Manual
support.cpx900.com
CPX-900 WiFi
Battery & System
Analyzer
October 2018
167-000848EN-B

blank page behind cover

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CPX-900
3
Contents
1 – Introduction 5
Personal Precautions 5
Symbols Conventions 5
Description 5
Consent to Collection and Use of Data: 5
Controls & Connections 6
Main Menu 6
Additional Screens 6
Main Menu Icons 7
Initial Power Up 7
WiFi Settings 7
BMIS Settings 8
Shop Settings 8
Data Collection Consent 8
Test Preparation 8
Inspecting the Battery 8
Testing Out-of-Vehicle 9
Testing In-Vehicle 9
Connecting To A Battery 9
Setting User Preferences 9
2 – In Vehicle Test 10
Battery Test 10
Battery Test Results 12
System Test 13
System Test Results 13
3 – Out Of Vehicle Test 14
Battery Test 14
Battery Test Results 15
4 – History 16
5 – Messages 17
Accessing Messages 17
6 – Settings 18
Tool 18
Display 18
Date & Time 18
Print Format 19
Work Order 19
Auto Test 19
VIN Entry 19
Version 19
Shop Settings 19
Admin 19
Shop Info 20
Network 20
WiFi 20
BMIS Settings 20

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CPX-900
7 – Maintenance & Troubleshooting 21
Tester Cables 21
Cleaning Clamps 21
Handling Test Cables 21
Storing Test Cables 21
Printer Paper 22
Replacing The Paper Roll 22
Replacing The Internal Batteries 23
Appendix A: Recommended Scanning Procedure 24
Scanning Tips 24
Appendix B:Test Results Decision Tables 25
Battery Test Results 25
Alternator Test Results 26

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1 – Introduction
CPX-900
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1 – Introduction
Personal Precautions
Risk of explosive gases. Never
smoke or allow a spark or ame
in the vicinity of a battery.
Batteries can produce a highly
explosive mix of hydrogen gas and
oxygen, even when the battery is not
in operation. Always work in a well-
ventilated area.
Wash hands after handling.
REQUIRED BY CALIFORNIA PROP. 65: Battery
posts, terminals, and related accessories contain
lead and lead compounds, chemicals known to
the state of California to cause cancer and birth
defects or other reproductive harm.
Inspect the battery for damage and check the electrolyte level. If the electrolyte level is too
low, replenish it and fully charge the battery. Always use the necessary safety precautions when
working with batteries to prevent severe injury or death. Follow all manufacturers’ instructions
and BCI (Battery Council International) safety recommendations, which include the following
precautions:
9Battery acid is highly corrosive. If acid enters your eyes, immediately ush them thoroughly
with cold running water for at least 15 minutes and seek medical attention. If battery acid
gets on your skin or clothing, wash immediately with a mixture of water and baking soda.
9Always wear proper safety glasses or face shield when working with or around batteries.
9Keep hair, hands, and clothing as well as the analyzer cords and cables away from moving
engine parts.
9Remove any jewelry or watches before you start servicing the battery.
9Use caution when working with metallic tools to prevent sparks or short circuits.
9Never lean over a battery when testing, charging, or jump starting.
Symbols Conventions Description
Symbol Description
The safety symbol indicates
instructions for avoiding hazardous
conditions and personal injury.
!The safety symbol with the
words CAUTION, WARNING, or
DANGER indicates instructions for
avoiding hazardous conditions and
personal injury.
The wrench symbol indicates
procedural notes and helpful
information.
The analyzer uses function-specic applications
accessed through a series of menus and icons
to guide users through the battery testing
process for consistent testing implementation
and accuracy. These are accessed using the
tester’s touch screen display. Test results can
be displayed on the full-color screen, printed,
or wirelessly emailed.
Consent to Collection and Use of Data:
You agree that Midtronics, Inc. may collect, store, transmit, and use technical data and related
information, including but not limited to technical information about this device, system and
application software, and accessories, that is gathered periodically to facilitate the provision of
product support, product improvements, product development, and other services related to
use of this device. If electing to collect personal data (such as e-mail addresses) the user is solely
responsible for obtaining any necessary permissions, and agrees to indemnify and hold harmless
Midtronics, Inc. its subsidiaries, ocers, employees and agents from any liability associated with
collecting, storing, and transmitting such personal data.

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
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1 – Introduction CPX-900
Controls & Connections





Display Screen
Cooling Vent
Arrow Keys & Power But-
ton
Mini-USB Port
Thermal Printer
(optional)
Temperature Sensor
VIN Barcode Scanner
(optional)
Clamp Tabs


Main Menu
12.74V CPX-900
In Vehicle Test Out of Vehicle
Test
History
Messages Sengs Version


Menu Bar
12.74V Battery Voltage
(if connected) Controller internal battery status
WiFi signal strength
Main Menu Selection Area
 When displayed, the Screen Arrows show which ARROW key on the keypad to press to
display other icons or screens. When displayed under a list of options, the Screen Arrows
show which keypad arrow to press to highlight a character or item in a list.
Additional Screens
The dots at the bottom or side of a menu or results screen indicate additional screens are available,
 Screen 1
Screen 2
Screen 3
Press or 

Screen 1
Press or 

Screen 2

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1 – Introduction
CPX-900
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Main Menu Icons
Icon Description
In Vehicle Test
For testing batteries that are connected to and installed in a vehicle. An In Vehicle
Test includes a Battery Test and a System (Starter and Charging) Test.
Out of Vehicle
Test
For testing batteries not connected to or removed from a vehicle.
History
Access archived test histories or search test history by VIN or by technician.
Messages
Displays alerts and notications for upcoming tool software updates.
Sengs
Setup/adjust: WiFi, printer setup, email settings, user information, default language,
display and sound settings, BMIS information, and shop information.
Version
Access to tester software version information.
Initial Power Up
The tester will take a few moments when powered up for the rst time.
BMIS Setup-does not display if Wi not successfully setup (See "BMIS" in Chapter 6: Setup)
WiFi Settings
Set up the tool's WiFi connection. Select Skip to congure WiFi at a later time. See "Network" in
Chapter 6: Setup
Automatic The tester searches for any detectable WiFi networks. Select a displayed
network is then displayed on the tester screen.
Manual Manually enter Security, SSID, Password, Encryption, and WEP Keys.

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1 – Introduction CPX-900
BMIS Settings
At the User Credentials screen, enter the Midtronics-provided username, password, Client ID, and
Location ID to access BMIS data management.
Use  to highlight the numbers on the displayed keyboard and press to select. Press
Skip to move to the next step.
NOTE: If WiFi was not congured in the previous step, the BMIS setup screen is not
displayed.
Username Provided by Midtronics
Password Provided by Midtronics
Client ID Provided by Midtronics
Location ID Provided by Midtronics
Shop Settings
Use to enter information about the shop in which the tester will be used.
Shop Name Country
Shop Address Phone Number
Shop Address 2 Email Address
City Website
State (Blank)
Zipcode (Blank)
Country
With the displayed alphanumeric keypad, u se  to highlight the desired alphanumeric
character. Select to access the lower case and symbol character maps.
Once all of the alphanumeric characters have been entered, select Save or Esc to exit without saving.
Data Collection Consent
Select Accept to acknowledge test data is being collected via BMIS.
Test Preparation
Inspecting the Battery
Before starting the test visually inspect the battery for:
•Cracked, buckled, or leaking case. If you see any of these defects, replace the battery.
•Corroded, loose, or damaged cables and connections. Repair or replace them as needed.
•Corrosion on the battery terminals, and dirt or acid on the case top. Clean the case and termi-
nals using a wire brush and a mixture of water and baking soda.
•Low electrolyte level. If the electrolyte level is too low, add distilled water to ll up to ½ above
the top of the plates and fully charge the battery. Do not overll.
•Corroded or loose battery tray and hold-down xture. Tighten or replace as needed.

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1 – Introduction
CPX-900
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Testing Out-of-Vehicle
The preferred battery test location is In-Vehicle. However, for testing Out-Of-Vehicle:
•Always disconnect the negative cable from the battery rst and reconnect it last.
•Always use a carry tool or strap to lift and transport the battery.
Failure to properly install lead terminal adapters,
or using adapters that are dirty or worn, may
cause false test results.
When testing side-post or Group 31 batteries, always use
lead terminal adapters provided with the tester—do not
test at the battery’s steel bolts. To avoid damage, never use
a wrench to tighten the adapters more than ¼ turn.
Testing In-Vehicle
The preferred test position is at the battery posts. If you must test at a remote-post location, it
should have both a positive and negative post. Otherwise, you must remove the battery and
perform an out-of-vehicle test.
At the start of the test, make sure all vehicle accessory loads are o, the key is not in the ignition,
and the doors are closed.
Connecting To A Battery
Do not connect the tester to a voltage source
greater than 30 Vdc.
Connect the clamps to the tester: the red clamp to the positive (+) terminal and the black clamp to
the negative (–) terminal. If the clamps are reversed when connected, the tester displays CLAMPS
REVERSED! Reconnect the clamps.
Make sure both sides of the clamps are gripping the terminals by rocking each clamp back and
forth. A poor connection will prevent testing, and the tester will display a CHECK CONNECTION
message. If the message reappears after reconnecting, clean the terminals and reconnect.
Setting User Preferences
Customize the analyzer by setting preferences in the Settings ( ) Menu, described in Chapter 6.

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2 – In Vehicle Test CPX-900
2 – In Vehicle Test
In Vehicle Test
Use In Vehicle Test to perform Battery Tests on in-vehicle batteries using test
parameters determined by vehicle VIN or through manual entry of battery
parameters. A System Test for Starter and Charging testing is also available.
NOTE:When VIN Entry is enabled (See Chapter 6 - Settings), an In Vehicle Test test will
always associate the in-vehicle battery to the VIN of the vehicle being tested.
IMPORTANT: To expidite the testing procedure, makes sure Auto Test is enabled.
(Chapter 6 - Settings) The testing process begins as soon as the clamps are connected.
The CPX-900 provides a battery decision along with additional detailed information on battery
cranking and reserve capacity. Press  to return to the previous screen, select options and
when necessary, to enter or continue to the next step.
Battery Test
1. Connect the tester clamps to the battery terminals.
2. Auto Test - If enabled, the tool immediately begins testing the battery. (See Chapter 6 - Settings)
NOTE: The testing process uses Conductance Proling™ technology to determine
battery cranking capability and Reserve Capacity. This additional analysis can take
up to 60 seconds to complete.
3. At the Main Menu select In Vehicle Test.
4. Enter Work Order - If enabled, use the displayed keyboard template to Enter Work Order infor-
mation. (See Chapter 6 - Settings)
5. Temperature - when prompted, hold the tester temperature sensor 6 to 12 inches over the
top of the battery being tested.
Temp Sensor
Select Capture to lock in the live temperature reading.
6. VIN Capture - (scanner optional) scan the VIN bar code, usually located in the right corner of
the vehicle's front windshield or on the driver’s side door frame.
Refer to Appendix A for additional scanning tips.
NOTE: VIN scanning is skipped when the CPX-900 is not equipped with an op-
tional scanner.
NOTE: Barcode types supported by the CPX-900 include A: 1D: Code 39, Code
128, UPC, Codabar, GS1-Limited; 2D: PDF417, QR Code: Model 2, and Data Matrix
type barcodes. Refer to Appendix A for recommended VIN scanning procedures.

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2 – In Vehicle Test
CPX-900
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VIN Barcode
Scanner Drivers Door Frame
Windshield
Manual Entry - Use the on-screen keypad to manually type the 17-digit VIN and select Next.
1234567890
W E R T Y U P
A S D F G H J K L
Z X C V B N M

ESC Save
The displayed digit counter will count up the alphanumeric characters as they are entered.
7. Battery Test Setup - Edit the displayed battery information. Select Start to begin the testing
process.
Application Automotive
4D/8D
Group 31
Battery Post Top Post Side Post
Battery Type Flooded
AGM Spiral
EFB
AGM
Gel
Battery Units CCA
DIN
IEC
MCA
CA
SAE
EN
EN2
Battery Rating Hold down or to increase
scrolling speed.
Rating Description Range
CCA Cold Cranking Amps (specied by SAE): The
amount of current a battery can provide at 0 ºF
(–17.8 ºC).
100 to 3000
CA Cranking Amps: The amount of current a
battery can provide at 32°F (0 ºC).
100 to 3000
DIN Deutsche Industrie-Norm 100 to 1000
SAE Society of Automotive Engineers - European
labeling of CCA
100 to 3000
IEC International Electrotechnical Commission 100 to 1000
EN Europa-Norm 100 to 1700
MCA Marine Cranking Amps: The amount of current
a battery can provide at 32°F (0 ºC).
100 to 3000
EN2 Europa-Norm 100 to 1700

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2 – In Vehicle Test CPX-900
Battery Test Results
Icons are color-coded to indicate status.
Battery Test Starter Test Alternator Test
Green :
All test parameters were completed
and have passed.
Red :The battery has failed the test.
Yellow :Some test parameters may require
further testing.
Gray :Insufcent data to perform the test.
Test Results - Baery
VIN: 1HGEM225X5Lxxxxxx
Good Baery
Rated 575 CCA
Voltage 12.72 V
Measured 599 CCA
Temperature: 970F
 
Send Results System Test Done
Test Results - Baery
Cranking Health
Baery meets or exceeds
required standards. Test
again in 90 days.
Rated: 575 CCA
Measured: 599 CCA

Test Results - Baery
Reserve Health
OK
The baery has sucient
reserve capacity to
provide power for the
electronics systems in the
vehicle.

Test Results - Battery Test
NOTE: See Appendix B for complete parameter descriptions.

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2 – In Vehicle Test
CPX-900
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Select Send Results displayed at the bottom of the tester screen to send the test results to the
optional built-in printer or via email. Select Done to return to the Main Menu.
Email
6Printer
System Test
1. Select System Test displayed at the bottom of the screen to continue to the System Test.
2. Start the vehicle's engine and let it idle.
3. Ensure all accessories (High Beam headlights/ventilation blower etc.) are o and select Next.
The alternator output is tested.
4. When prompted, rev and hold the engine to between 2000 to 3000 rpm.
The alternator output is tested.
5. When prompted Idle the engine and and select Next.
6. Turn on the high beam headlights and ventilation blower and select Next.
The alternator output is tested.
7. When prompted, rev and hold the engine to between 2000 to 3000 rpm.
The alternator output is tested.
8. When prompted, turn o all loads and Idle the engine. Select Next.
System Test Results
Test Results - Summary
Good Baery
Cranking Normal
Charging Normal
Send Results Done
Test Results - Summary
T he Test Results - Summary screen is displayed following a System Test. Select the Battery, Cranking,
or Charging Test to view detailed test results for each part of the test.
NOTE: See Appendix B for complete parameter descriptions.
Select Send Results displayed at the bottom of the tester screen to send the test results to the
optional built-in printer or via email. Select Done to return to the Main Menu.
Email
6Printer

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3 – Out Of Vehicle Test CPX-900
3 – Out Of Vehicle Test
Out Of Vehicle
Test
Use Out Of Vehicle Test to test and verify the condition of a batteries that is not
connected to a vehicle..
IMPORTANT: To expidite the testing procedure, makes sure Auto Test is enabled.
(Chapter 6 - Settings) The testing process begins as soon as the clamps are connected.
The CPX-900 provides a battery decision along with additional detailed information on battery
cranking and reserve capacity. Press  to return to the previous screen, select options and
when necessary, to enter or continue to the next step.
Battery Test
1. Connect the tester clamps to the battery terminals.
2. Auto Test - If enabled, the tool immediately begins testing the battery. (See Chapter 6 - Settings)
NOTE: The testing process uses Conductance Proling™ technology to determine
battery cranking capability and Reserve Capacity. This additional analysis can take
up to 60 seconds to complete.
3. At the Main Menu select Out Of Vehicle Test. The Battery Test begins immediately.
4. Enter Work Order - (if enabled) Use displayed template to Enter Work Order information.
5. Battery Test Setup - Edit the displayed battery information. Select Start to begin the testing
process.
Application Automotive
4D/8D
Group 31
Battery Post Top Post Side Post
Battery Type Flooded
AGM Spiral
EFB
AGM
Gel
Battery Units CCA
DIN
IEC
MCA
CA
SAE
EN
EN2
Battery Rating Hold down or to increase
scrolling speed.

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3 – Out Of Vehicle Test
CPX-900
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Rating Description Range
CCA Cold Cranking Amps (specied by SAE): The
amount of current a battery can provide at 0 ºF
(–17.8 ºC).
100 to 3000
CA Cranking Amps: The amount of current a
battery can provide at 32°F (0 ºC).
100 to 3000
DIN Deutsche Industrie-Norm 100 to 1000
SAE Society of Automotive Engineers - European
labeling of CCA
100 to 3000
IEC International Electrotechnical Commission 100 to 1000
EN Europa-Norm 100 to 1700
MCA Marine Cranking Amps: The amount of current
a battery can provide at 32°F (0 ºC).
100 to 3000
EN2 Europa-Norm 100 to 1700
6. Temperature - when prompted, hold the tester temperature sensor 6 to 12 inches over the
top of the battery being tested.
Temp Sensor
Select Capture to lock in the live temperature reading.
Battery Test Results
NOTE: See Battery Test Results in Chapter 2 - In Vehicle Test for test result screens
and descriptions.

Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
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4 – History CPX-900
4 – History
History
Use History to access the tool usage history, a vehicle history based on VIN, and
user histories. The search function can also be used nd test records for specic
vehicles and technicians.
Press  to return to the previous screen, select options and when necessary, to enter or
continue to the next step.
1. At the Main Menu, select History. The Tool History screen is displayed.
Tool History
Search Records
In Vehicle Test 1HGEM225X5Lxxxxxx
06/08/2018 12:09 PM
In Vehicle Test 5UXZV4C50D0xxxxxx
06/08/2018 8:45 AM
Out of Vehicle No VIN
06/07/2018 3:16 PM
1/3
2. Select a vehicle record to view the results or select Search Options to search for records by
manually entering a VIN, scanning a VIN, or by test result decision.
3. For In Vehicle tests, the Summary screen is displayed.
Test Results - Summary
Good Baery
Cranking Normal
Charging Normal
Send Results Done
Test Results - Summary
4. Select the Battery, Cranking, or Alternator Test to view detailed test results for each part of
the test.
NOTE: See Battery Test Results in Chapter 2 - In Vehicle Test for test result screens
and descriptions.
5. To send the test results to a congured printer or via email select Send Results. To return to
the Home Screen, select Done to the Main Menu.

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5 – Messages
CPX-900
17
5 – Messages
Messages
The Messages function displays alerts and notications for upcoming tool
software updates.
Select to return to the previous screen or to return to the Main Menu.
Accessing Messages

A number is displayed next to the Messages icon when the analyzer has
received any critical messages.
Unread Critical Messages
Read Critical Messages

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6 – Settings CPX-900
6 – Settings
Sengs
Use Setup to setup and adjust the tester display and time, shop and
administrative settings, network connectivity, and BMIS settings.
Press  to return to the previous screen, select options and when necessary, to enter or
continue to the next step.
Tool
Display
Use to return to the Display menu.
Language Select the analyzer default standard language.
Temperature
Units
Select the default temperature units (Fahrenheit/Celsius) used when measuring
battery temperature.
Number
Separator
Select the default number display using commas or periods separators.
Date & Time
Use to return to the Display menu.
Date Format Select Month/Day/Year (MM/DD/YYYY), or Day/Month/Year DD/MM/YYYY.
Date Use or to advance the month, day, and year. Use or to advance
left or right and move to Cancel or Next. Select Next to save the date or
Cancel to exit without saving.

June 18 2018

Cancel Next
Time Format Select 12 or 24 Hour Format.
Time
Use or to advance the hours, minutes, and AM/PM setting. Use or 
to advance left or right and move to Cancel or Next. Select Next to save the
time or Cancel to exit without saving.

10 46 AM

Cancel Next

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6 – Settings
CPX-900
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Print Format
Set the default to include Shop Info and State Of Health (SoH) information on test result printouts.
Use to return to the Display menu.
Include
Shop Info
Press to check and uncheck the box. A checked box indicates the shop
information will be included on printed test results.
Include
SoH Graph Press to check and uncheck the box. A checked box indicates the State Of Health
screen will be included on printed test results.
Work Order
Work Order Press to check/uncheck the box to enable/disable the function.
Customize
Enable
Press to check/uncheck the box to enable/disable the ability to customize
Work Order Text.
Work Order
Text
Use  to highlight characters on the displayed keyboard and press 
to select. Limit=13 characters. Select Esc to return to the Work Order Settings
screen.
Auto Test
Press to check and uncheck the box. A checked box indicates the tester will immediately begin
testing a battery as soon as it is connected. Use to return to the Tool menu.
NOTE: To expidite the testing procedure, enable the Auto Test function.
VIN Entry
Press to check and uncheck the box. A checked box indicates the VIN Entry option will be
included as part of an In Vehicle Test. Use to return to the Tool menu.
Version
Use to conrm technical information for internal tester software and hardware.
Cong: Build Number:
Firmware: Serial Number:
Flash: MAC ID:
EEPROM: FCC ID:
Build Date:
Shop Settings
Admin
Admin
Enable
Press to check and uncheck the box. A checked box indicates the Admin
function is enabled.
Admin
Pin
Use  to select a four (4) digit Admin PIN. Select OK to save the PIN or
Cancel to exit without saving. Use to return to the Shop Settings menu.

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6 – Settings CPX-900
Shop Info
Use to enter information about the shop in which the tester will be used.
Shop Name Country
Shop Address Phone Number
Shop Address 2 Email Address
City Website
State (Blank)
Zipcode (Blank)
Country (Blank)
With the displayed alphanumeric keypad, u se  to highlight the desired alphanumeric
character.
Select to access the lower case and symbol character maps.
Once all of the alphanumeric characters have been entered, select Save or Esc to exit without saving.
Network
WiFi
Automatic The tester searches for any detectable WiFi networks. A list of detected WiFi
networks is then displayed on the tester screen. Highlight a displayed network
and press to connect. Press to return to the WiFi Settings screen.
Manual Manually enter Security, SSID, Password, Encryption, and WEP Keys. Select
Connect.
BMIS Settings
Username Provided by Midtronics
Password Provided by Midtronics
Client ID Provided by Midtronics
Location ID Provided by Midtronics