Subaru GR8-1100 EST User manual

INSTRUCTION MANUAL
September 2013
167-000458EN-B
GR8-1100 EST
Battery Diagnostic Station
with Alternator/Starter Test Module

This page intentionally blank.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 3
Contents
Safety Guidelines 5
General Safety Precautions 5
Personal Precautions 5
Preparing To Charge The Battery 6
Grounding And AC Power Cord Connection 6
Charger Location 7
DC Connection Precautions 7
Installing The Battery 7
Connecting To The Battery 8
Chapter 1: Introduction & Overview 9
Front View 9
Back View 9
Display and Keypad 10
Data Entry Methods 11
Menu Icons 11
Option Buttons 11
Scrolling Lists 11
Alphanumeric Entry 11
Value Boxes 11
Menu Structure 12
Main Menu 12
Charging Menu 12
Info Menu 12
Print/View Menu 12
Utility Menu 12
Conventions Used In This Manual 13
Initial Start-up 13
Preparing to Charge 14
Inspecting the Battery 14
Connecting the Clamps 14
Connecting to AC Power 14
Setting User Preferences 14
Chapter 2: Charging 15
Diagnostic 15
Diagnostic Charging 16
Aborting a Charge Session 16
Completing a Charge Session 17
Top-Off Mode 17
Diagnostic Charging Results 17
State-of-Health (SOH) 18
Jump Start 18
Manual Charging 18
Chapter 3: Power Supply Mode 20
Chapter 4: System Test 21
System Test Results 22
Battery Test Results 22
Starter Test Results 23
Alternator Test Results 23
Chapter 5: Info 25
Totals 25
Version 25
Chapter 6: Print/View 26
View Test 26
Send Data 26
Chapter 7: Utility 27
Clock 27
Time Zone 27
DST Mode 27
Mode 27
Time 27
Format 27
Date 27
Users 27
Entering a New User ID 27
Deleting a User ID 28
On/Off 28
Shop 28
Display 28
Coupon 29
Edit Coupon 29
Temp 29
Language 29
Format 29
Update 29
Printer (Optional) 30
Buzzer 30
Dealer Number 30
WiFi Disable 30
WiFi Setup 30
Scan 30
WiFiCong File 31
Manual 31
IP Setup 31
CVG 31

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
4
Chapter 8: Maintenance & Troubleshooting 32
Help 32
Terms/Denitions 32
Troubleshooting 32
Service Info 32
Test Cable Maintenance 32
Attaching the Charger Cables 33
Test Messages 33
Error Messages 34
Appendix 35
Shop Header And Coupon Templates 35

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 5
Safety Guidelines
1. General Safety Precautions
1. IT IS OF UTMOST IMPORTANCE THAT YOU READ THIS
MANUAL AND FOLLOW THE SAFETY AND OPERATING
INSTRUCTIONS EXACTLY BEFORE USING YOUR CHAR-
GER. SAVE THESE INSTRUCTIONS.
Risk of explosive gases
Batteries generate explosive gases during normal opera-
tion, and when discharged or charged.
1.1 To reduce risk of battery explosion, follow these safety in-
structions and those published by the battery manufac-
turer and the manufacturer of any equipment you intend
to use in the vicinity of a battery. Review cautionary mark-
ing on these products and on the engine, and on the ve-
hicle or equipment containing the battery.
Charging a non-rechargeable battery may cause
the battery to burst.
To reduce the risk of injury, only charge rechargeable
lead-acid type batteries including maintenance-free,
low-maintenance, or deep-cycle batteries.
If you are uncertain as to the type of battery you are attempting
to charge, or the correct procedure for checking the battery’s
state of charge, contact the seller or battery manufacturer.
1.2 Use of an attachment not recommended or sold by the
battery charger manufacturer may result in a risk of re,
electric shock, or injury to persons.
1.3 To reduce risk of damage to the electric plug and cord, pull
by the plug rather than by the cord when disconnecting
the charger.
1.4 Position the AC and DC leads to avoid tripping over them
and to prevent damage by hood, doors, or moving engine
parts; protect from heat, oil, and sharp edges.
1.5 Do not operate the charger if it has received a sharp blow,
been dropped or otherwise damaged in any way; take it to
a qualied service center.
1.6 Do not disassemble charger; take it to a qualied service
center when repair is required. Incorrect reassembly may
result in a risk of electric shock or re.
1.7 To reduce risk of electric shock, unplug the charger from
the AC outlet before attempting any maintenance or
cleaning. Turning o the controls will not reduce this risk.
1.8 Connect and disconnect the battery leads only when the
AC supply cord is disconnected.
1.9 Do not overcharge the battery. (See sections 3 and 10 in
the safety instructions)
1.10 Charge the battery in a dry, well-ventilated area.
1.11 Never place articles on or around the charger, or locate the
charger in a way that will restrict the ow of cooling air
through the cabinet.
1.12 An extension cord should not be used unless absolutely
necessary. (See paragraph 4.3.)
1.13 Have a damaged cord or plug replaced immediately.
1.14 Do not expose the charger to rain or snow.
2. Personal Precautions
Non-rechargeable batteries may burst when
charging causing personal injury and damage.
To avoid electrical shock or burn, never alter the charger’s
original AC cord and plug. Disconnect plug from outlet
when charger is idle.
Wash hands after handling.
Battery posts, terminals, and related acces-
sories contain lead and lead compounds,
chemicals known to the state of California
to cause cancer and birth defects or other
reproductive harm..
2.1 Always have someone within range of your voice, or close
enough to come to your aid, when working around ood-
ed batteries.
2.2 Have plenty of fresh water and soap nearby in case battery
acid contacts skin, clothing or eyes.
2.3 Wear complete eye protection, clothing protection, and
wear rubber soled shoes. Place damp cloth over battery
to protect against acid spray. When ground is very wet or
covered with snow, wear rubber boots. Avoid touching
eyes while working near battery.
2.4 If battery acid contacts skin or clothing, wash immediately
with soap and water. If acid enters the eye, immediately
ush with cold running water for at least 10 minutes, and
seek medical attention.
2.5 NEVER smoke or allow a spark or ame in vicinity of a bat-
tery or engine.
2.6 Be extra cautious to reduce risk of dropping a metal tool
onto the battery. It might spark or short circuit the battery
or other electrical part that may cause an explosion.
2.7 Before working with a ooded battery, remove personal
metal items such as rings, bracelets, necklaces, watches,
etc. A ooded battery can produce a short circuit current
high enough to weld such items causing a severe burn.
Safety Guidelines

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
6
Safety Guidelines
2.8 The charger is not intended to supply power to a low-
voltage electrical system other than applications using re-
chargeable, ooded type batteries. Do not use the battery
charger for charging dry-cell batteries commonly used
with home appliances. These batteries may burst and
cause personal injury and property damage.
2.9 NEVER charge a frozen battery; thaw it out rst.
3. Preparing To Charge The Battery
3.1 If it is necessary to remove the battery from vehicle to
charge it, always remove the grounded terminal from the
battery rst. Make sure all accessories in the vehicle are o,
so as not to cause an arc.
3.2 Be sure the area around the battery is well ventilated while
the battery is being charged. Gas can be forcefully blown
away by using a piece of cardboard or other non-metallic
material as a fan.
3.3 Clean the battery terminals. Be careful to keep corrosion from
coming into contact with your eyes.
3.4 Add distilled water in each cell until the battery acid
reaches the level specied by the manufacturer. This helps
purge excessive gas from the cells. Do not overll. For a
battery without caps, carefully follow the manufacturer’s
recharging instructions
3.5 Study all battery manufacturer’s specic precautions such
as removing or not removing cell caps while charging and
recommended rates of charge.
3.6 Determine the voltage of the battery by referring to the
car owner’s manual and make sure that the output voltage
selector switch is set at the correct voltage. If the charger
has an adjustable charge rate, charge the battery initially
at lowest rate. If the charger has only one voltage, verify
that the battery voltage matches the voltage of charger.
For a charger not having an output voltage selector
switch, determine the voltage of the battery by referring
to car owner’s manual and make sure it matches the
output rating of the battery charger.
4. Grounding And AC Power Cord Connection
NOTE: When you start a new test, the last test results
in memory are overwritten. Remember to record or
print the results if you need to retain them.
4.1 The charger must be grounded to reduce risk of electric
shock. The charger is equipped with an electric cord hav-
ing an equipment grounding conductor and a ground-
ing plug. The plug must be plugged into an outlet that is
properly installed and grounded in accordance with all lo-
cal codes and ordinances.
Hazardous voltage.
An improper connection can result in
electric shock
To avoid electrical shock or burn, never alter
the charger’s original AC cord and plug.
Disconnect plug from outlet when charger
is idle.
IFTHE PLUG DOES NOT FITTHE OUTLET, HAVE A PROPER
OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.
4.2 This battery charger is for use on a nominal 120-volt cir-
cuit and has a grounding plug that looks like the plug il-
lustrated in Figure A. A temporary adapter, which looks like
the adapter illustrated in Figures B and C, may be used to
connect this plug to a two-pole receptacle as shown in
Figure B, if a properly grounded outlet is not available. The
temporary adapter should be used only until a properly
grounded outlet can be installed by a qualied electrician.
Hazardous voltage.
An improper connection can result in
electric shock
Before using an adapter be certain the center
screw of the outlet plate is grounded. The
rigid ear or lug extending from the adapter
must be connected to a properly grounded
outlet. Make certain it is grounded. If neces-
sary, replace the original screw that secures
the adapter ear or lug to the cover plate and
make the ground connection to the ground-
ed outlet.
USE OF AN ADAPTER IS NOT ALLOWED IN CANADA. IF A
GROUNDING-TYPE RECEPTACLE IS NOT AVAILABLE, DO
NOT USE THIS APPLIANCE UNTIL THE PROPER OUTLET IS
INSTALLED BY A QUALIFIED ELECTRICIAN.
4.3 An extension cord should not be used unless absolutely
necessary. Use of an improper extension cord could result
in a risk of re and electric shock. If an extension cord must
be used, make sure:
a. that the pins on plugs of the extension cord are the
same number, size, and shape as those of the plug on
the charger;
b. that the extension cord is properly wired and in good
electrical condition;
c. that the wire size is large enough for the AC ampere
rating of charger as specied in the following table.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 7
Safety Guidelines
Recommended minimum AWG* size for extension cords for battery chargers
AC input rating amperes AWG* size of cord
Equal or greater than: But less than:
Length of cord, feet (m)
25
(7.6)
50
(15.2)
100
(30.5)
150
(45.6)
8 10 18 14 12 10
10 12 16 14 10 8
12 14 16 12 10 8
14 16 16 12 10 8
16 18 14 12 8 8
*American Wire Gauge
5. Charger Location
5.1 Locate the charger as far away from the battery as the
charger cables permit.
5.2 Never place the charger directly above the battery being
charged; gases from the battery will corrode and damage
the charger.
5.3 Never allow battery acid to drip on the charger when tak-
ing gravity readings or lling a battery.
5.4 Operate the charger only in a well-ventilated area that is
free of dangerous vapors.
5.5 Store the charger in safe, dry location and maintain it in
perfect condition.
5.6 Do not set the battery on top of the charger or where its
acid might drip onto the charger.
6. DC Connection Precautions
6.1 All switches should be set in the OFF position and AC cord
should be DISCONNECTED from electrical outlet before you
connect and disconnect the charger clamps. Never allow the
clamps to touch each other.
6.2 When attaching the charger clamps, be certain to make
the best possible mechanical as well as electrical connec-
tion. This will tend to prevent the clamps from slipping o
the connections, avoid dangerous sparking, and assure
safer and more ecient charging. The clamps should be
kept clean.
Hazardous voltage.
Can cause death or serious
personal injury.
Setting the switches to“OFF” does not always
disconnect the charger electrical circuit from
the AC power cord or the DC charger clamps.
7. Installing The Battery
Risk of explosive gases.
A spark near the battery may cause a battery explosion.
Follow these steps when the battery is installed in the
vehicle to reduce the risk of explosion.
7.1 Before working on the vehicle, rmly apply the emergen-
cy brake and place the gearshift to NEUTRAL—shift an au-
tomatic transmission to PARK.
7.2 Locate the charger as far away from the battery as the
charger cords permit and position the AC and DC cords to
avoid stepping on or tripping over them and to prevent
damage by hood, doors, or moving engine parts.
7.3 Stay clear of fan blades, belts, pulleys, and any other parts
that can cause physical injury.
7.4 Turn OFF all vehicle loads, including door lights, and cor-
rect any defects in the vehicle’s electrical system that may
have caused low battery.
7.5 Check the polarity of the battery posts. The POSITIVE
(POS., P, +) post usually has a larger diameter than the
NEGATIVE (NEG., N,–) post.
7.6 Determine which post of the battery is grounded (connect-
ed) to the chassis. If the negative post is grounded (as in most
vehicles), see paragraph 7.7. If the positive post is grounded,
see paragraph 7.8.
7.7 For a negative-grounded vehicle, rst connect the POSI-
TIVE (RED) clamp from the charger to the POSITIVE
(POS., P, +) ungrounded post of the battery. Then connect
the NEGATIVE (BLACK) clamp to the NEGATIVE (NEG, N,
-) post of the battery. Do not connect the clamp to the
carburetor, fuel lines, or sheet-metal body parts. When dis-
connecting the charger, always do so in reverse sequence
of the connecting procedure; break the rst connection
while staying as far away from the battery as practical.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
8
Safety Guidelines
7.8 For positive-grounded vehicle, connect the NEGATIVE
(BLACK) clamp from the charger to the NEGATIVE (NEG.,
N, –) ungrounded post of battery. Then connect the POSI-
TIVE (RED) clamp to the POSITIVE (POS., P, +) post of the
battery. Do not connect clamp to carburetor, fuel lines, or
sheet-metal body parts. When disconnecting the charger,
always do so in reverse sequence of the connecting proce-
dure; break the rst connection while staying as far away
from the battery as practical.
CAUTION: WHEN POSITIVE (+) POST OF VEHICLE
BATTERY IS GROUNDED, DOUBLE CHECK POLARITY.
8. Connecting To The Battery
8. If it is necessary to remove the battery from the vehicle or
equipment, always remove the grounded terminal from
the battery rst.
Risk of explosive gases.
Can cause death or serious
personal injury.
Always work in a well-ventilated area. 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.
Risk of explosive gases.
Make sure all vehicle loads are OFF to prevent a
possible arc..
8.1 Check the polarity of battery posts. POSITIVE (POS., P, +)
post usually has larger diameter than NEGATIVE (NEG.,
N, –) post.
8.2 Connect the POSITIVE (RED) charger clamp to the POSI-
TIVE (POS., P, +) post of battery.
8.3 Position yourself as far away from the battery as possi-
ble—do not face the battery when making the nal con-
nection—then connect the NEGATIVE (BLACK) charger
clamp to the NEGATIVE (NEG., N,–) post.
8.4 When disconnecting the charger, always do so in the re-
verse sequence of the connecting procedure; break the
rst connection while staying as far away from the battery
as practical.
8.5 MARINE “BOAT” BATTERIES MUST BE REMOVED AND
CHARGED ON SHORE. TO SAFELY CHARGE THEM ON
BOARD REQUIRES EQUIPMENT SPECIFICALLY DE-
SIGNED FOR MARINE USE.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 9
Chapter 1: Introduction & Overview
Front View




Control Module
Backlit graphical display and keypad for data entry.
STATUS light
Lights in conjunction with beeping alarm to indicate
transitions and warnings.
Data Card slot
For data storage and future software updates.
ON/OFF Switch
Turns GR8 power on and o.
Back View









Control Module Serial Number label
Cable wrap
Amp Clamp cable
Load Module
Wi-fi Antenna
Charger Cable connectors
 AC Power Cord
Amp Clamp connection
Charge Engine Serial Number label
Chapter 1: Introduction & Overview

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
10
Chapter 1: Introduction & Overview
Display and Keypad
The charger display and keypad work together to help you
quickly nd and use the right tools at the right time. The
display also keeps you on track with onscreen navigation
aids, directions and messages. The illustration shows how the
elements on the screen relate to the keypad.









Voltmeter
When you first connect the charger to a battery it
functions as a voltmeter. The voltage reading appears
above the left soft key until you move to other menus or
functions.
Soft Keys
Press the two soft keys linked to the bottom of the screen
to perform the functions displayed above them. The
functions change depending on the menu or test process.
So it may be helpful to think of the words appearing
above them as part of the keys.
Arrow ( ) keys
Press the ARROW keys to scroll to numerical values and
move to menus and icons
Stop Key
Press the STOP to stop (abort) a charging session.
Title Bar
The title bar shows you the name of the current menu, test
tool, utility, or function.
Selection Area
The selection area below the Title Bar contains selectable
items or dialog boxes that display information or require
a response.
Menu Screen Arrows
When displayed in menu screens, the menu screen arrows
show you which Arrow key on the keypad to press to
display other icons or screens. The Up and Down Menu
Screen Arrows, for example, indicate when to press the
or keys to display the screens above and below the
current screen.
The directional Menu Screen Arrows tell you when to use
the  or  keys to select an icon.
When displayed under a list of options, the menu screen
arrows show you which keypad arrowto press to highlight
a character or item in a list.
Scroll Bar
Another navigational aid is the scroll bar on the right side
of the screen. The position of its scroll box shows you
whether the screen is the top (or only screen), middle, or
last in a series.
Some screens also indicate the page order with a notation
such as P1/3 (page 1 of 3).
Top or
only
screen
Middle
screen
Last
screen
Scroll
Box
Alphanumeric Keypad
In some cases, you can use the alphanumeric keypad to
enter numerical test parameters instead of scrolling to
them with the ARROW keys.
You can also use the alphanumeric keys to create and edit
customer coupons and your shop contact information on
printed test results, and manage User IDs.
To add a space, press  . To erase a space and insert a
character, press  .
Refer to the table below for the characters associated with
each alphanumeric key.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 11
Chapter 1: Introduction & Overview
Alphanumeric Keys and Associated Characters
Key Character
$ - ( ) ! " & ' : ; ? 1
a b c 2
d e f 3
g h i 4
j k l 5
m n o 6
p q r s 7
t u v 8
w x y z 9
% , . # < = > / * + @ 0
Data Entry Methods
To perform a particular test or function, the charger requires
dierent types of information. This means that the methods
you use to enter information will change depending on the
type of information requested.
Typically, the soft key below the right half of the screen
conrms your choice, although the command above it may
vary. (Examples: SELECT, NEXT, and SAVE.) In a similar
fashion, the soft key below the left half of the screen cancels
your choice or returns you to the previous screen, although
the word above it may also vary. (Examples: BACK and CLEAR.)
Menu Icons
A menu icon is a graphical
representation of a function
you can select, such as the
DC Amp Meter Test Icon in
the DMM Menu. To select an
icon, use  or  to highlight
it. Highlighting changes the icon to a white picture on a black
background. To conrm your selection, press the appropriate
soft key.
Option Buttons
Some lists have option
buttons before each item.
To select an item, use or
to move the dot to the
button next to the item. To
conrm your selection, press
the appropriate soft key.
You can also use the alphanumeric keypad to enter the number
preceding the option button of your choice. No additional
keypress is needed to proceed.
Scrolling Lists
Scrolling lists contain items
that extend above and below
the screen. The rst number
above the right soft key
indicates the position in the
list of the highlighted item.
The second number above the right soft key indicates the
number of items in the list.
To select an item, use or to highlight the item, and press
the appropriate soft key.
To move the highlight bar up five lines at a time, press . To
move the highlight bar down ve lines at a time, press  .
Alphanumeric Entry
Some selections require you
to use the alphanumeric
keypad. These “user-dened”
selections have a blinking
horizontal line (cursor) to the
right of the last character.
Use the keypad to enter the alphanumeric characters. To enter
letters, repeatedly tap the alphanumeric key to cycle through
its associated characters.
Value Boxes
Value boxes contain items
that extend above and below
the selection box that contain
them. To indicate that there
are more values, the symbols
appear to the right of the
box.
To select, use or to scroll to the value, or use the keypad
to enter the value directly, and press the appropriate soft key.
In the illustration the left directional arrow indicates that you
can press  to clear all or part of the entry.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
12
Chapter 1: Introduction & Overview
Menu Structure
This section contains a graphical representation of the menu
structure with brief descriptions of the utilities in each menu.
Main Menu
The Main Menu is the starting point for all tools and utilities,
which are depicted as icons. Some icons lead directly to the
function they represent, while others are menu icons that lead
to two or more options. Menu icons marked with an asterisk (*)
are mapped on the following pages.
Icon Description
*Automatically tests, charges, and makes a
decision on a battery using the information
inputted by the user in a series of screens.
Generates a test code for all decisions.
Power Supply Mode: Tests and maintains battery
voltage at 13.5 volts to allow for uninterrupted
reashing of vehicle’s computers or to retain
vehicle system settings.
Perform a test on a vehicle including Battery and
determine Starter Cranking voltage. Generates a
test code for all decisions.
Displays the last battery test results. Sends the
results to the printer.
*Includes a utility to view and print test results, a
total test counter, a data transfer utility, and the
software version and date, and charger serial
number for the Control Module.
*Setup utilities lets the user customize the
charger interface. Includes administrative
functions.
Charging Menu
The Charging Menu provides several charging op-
tions: Diagnostic Charging, Jump Start, and Manual
Charging.
Icon Description
Select for optimum battery testing and SOH
in the shortest possible time to ensure battery
performance for customer vehicles or vehicles on
the lot. Generates a test code for all decisions.
Makes high output current available to boost
charge an in-vehicle battery and assist in starting
the engine.
Provides a timed charge that ranges from 5 to
120 minutes or a continuous charge that ends
when the STOP button on the Control Module in
pressed.
Info Menu
The Info Menu has utilities to help manage test data,
view and print test results, track the usage and history
of the charger.
Icon Description
Reports menu that includes the following type
of test totals: LIFETIME, USER TOTALS, LAST
100 LOG, and TOTALS BY DECISION.
Displays the software version and release date,
and the serial number of the Control Module.
Print/View Menu
The tester stores the last battery, system, and cable
test results in its memory until another test is per-
formed. This function can also be used to send test
data through a connected WiFi network.
Icon Description
Displays the last Battery and System Test
results. Sends the results to an optional IR
printer.
*Transmit test data via the charger's WiFi network
connection.
Utility Menu
The Utility Menu lets users customize charger default
options. Before using the charger for the rst time,
check the default values to see what options may
need to be changed, added, or deleted.
Icon Description
Settings to adjust date and time.
Add, edit, or delete User IDs.
Allows users to add a custom header to printed
test results.
Settings to adjust the screen contrast and
backlight time.
Enable or disable the inclusion of a coupon(s)
created using the Edit Coupon function to be
printed on test results.
Create and store up to three separate coupons
to be printed on test results.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 13
Chapter 1: Introduction & Overview
Icon Description
Sets the language of the display and printouts.
Select degrees in Fahrenheit or Celsius as the
default temperature measurement units.
Updates the charger software via les on a data
card.
Formats the data card to receive data. Also
erases all data on the card.
Updates the charger software using les on an
data card.
Select between an internal printer or an IR
external printer.
(Internal printer optional)
Turns buzzers alert on or off.
Use the Dealer Number function to enter the
number of the dealership where the charger is
registered.
Use the WiFi Disable function to enable or
disable data communications over the selected
WiFi network.
Use this function to nd and congure the
tester’s connection to a local WiFi network.
The IP Setup function allows the IP conguration
of the tester WiFi radio to be congured manually.
Use the CVG function to connect and
synchronize the CVG module with the WiFi
equipped GR8-1100 diagnostic charger.
Conventions Used In This Manual
To help learn how to use the GR8-1100 EST, this manual uses
these symbols and typographical conventions:
Convention 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.
CAUTION The word CAUTION indicates instructions for
avoiding equipment damage.
The wrench symbol indicates procedural
notes and helpful information.
CAPITAL
LETTERS
The text for screen options are in regular
capital letters.
BACK
ARROW
The text for soft keys are in Bold capital
letters.
Initial Start-up
When the charger is plugged in and turned on for the rst
time, it will prompt the user to enter the six-digit Dealer
Number and adjust the charger's internal clock. The charger's
WiFi network settings can also be enabled and congured.
See Chapter 7: Utility for more information.
After the initial settings have been entered into the charger,
the Main Menu is displayed on the Control Module screen.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
14
Chapter 1: Introduction & Overview
Preparing to Charge
Inspecting the Battery
Before starting the test, visually inspect the battery for:
•Cracked, buckled, or leaking case. If any of these defects are
visible, replace the battery.
•Corroded, loose, or damaged cables and connections. Re-
pair or replace as needed.
•Corrosion on the battery terminals, dirt, or acid on the
case top. Clean the case and terminals 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 the level indicated by the battery manu-
facturer, and fully charge the battery. Do not overll.
•Corroded or loose battery terminals, tray and hold-down
xture. Tighten or replace as needed.
Connecting the Clamps
Connect the charging clamps to the battery in accordance
with all precautions and safety instructions. Do not connect
either clamp to the vehicle’s chassis.
Connecting to AC Power
Plug the charger into a dedicated, grounded nominal 15-amp
or higher AC outlet. Press the power switch to the ON position.
If the clamps are not making good contact with the battery posts,
the Control Module displays CHECK CLAMP CONNECTIONS.
Make sure that both jaws of each charging clamp come in good
contact with the battery posts.
The charger will sound an alarm and display “Charger Clamps
Reversed" if the clamps are reversed on the battery terminals.
Setting User Preferences
Before starting a test with the charger, by setting preferences
in the Setup Menu. The setup utilities are described in
Chapter7: Utilities.
Go to Chapter 8: Maintenance & Troubleshooting in this
manual for more information about the default settings and
user preferences built into the GR8-1100 EST.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 15
Chapter 2: Charging
The Charging menu has three options for charging
a battery: Diagnostic mode, Jump Start mode, and
Manual mode.
IMPORTANT: When you start a new charge session,
the last test results in memory will be overwritten. Re-
member to record or print the results if you need to
retain them.
Diagnostic
Diagnostic Charging has four modes that the charger
may use to determine the State-of-Health of the bat-
tery while bringing it to a full State-of-Charge.
IMPORTANT: When you start a new charge session,
the last test results in memory will be overwritten. Re-
member to record or print the results if you need to
retain them.
Initial
Analysis:
The charger rst analyzes the battery and
makes a decision: REPLACE BATTERY (or
REPLACE-BAD CELL) or GOOD BATTERY. A
test code appears for all decisions.
 Diagnostic
Mode:
Once the charger determines that the
battery is good, needs charging, and is safe
to charge, it proceeds to Diagnostic Charge
Mode. During the charging session, the
charger provides updates of the charging
voltage, charging current, remaining time
to charge, charging mode, and the amount
of charge replenished into the battery in
amp-hours. The charger continues to test
the battery throughout Diagnostic Mode
and may determine at some point that the
battery needs to be replaced.
Following the Diagnostic Charge Mode
process the charger will prompt you to
stop the process or continue on in Top-O
Mode. After two minutes the charger will
automatically enter Top-O mode if there is
no user input.
Top-Off
Mode:
This mode occurs automatically at the end
of the charge cycle to allow the charger to
ll a good battery to capacity. Top-O Mode
ends when the battery’s acceptance of the
charge current goes below 2 amps, or when
you press the STOP button.
Recovery
Mode:
In some cases, the charger automatically
switches to Recovery Mode in an attempt to
recover a hard-to-charge battery.
A test code is generated for all nal decisions.
Make sure all vehicle accessory loads are o, the key is not in
the ignition, and the doors are closed.
1. At the Main Menu highlight the Charging icon and press
the SELECT key.
2. At the Charge Menu highlight the Diagnostic icon and
press the SELECT key.
3. If prompted, use or to select a User ID and press
NEXT or press the corresponding number key.
4. Use or to select the LOCATION and press NEXT or
press the corresponding number key.
1 OUT OF VEHICLE
2 IN VEHICLE
5. Use or to select the BATTERYTYPE and press NEXT or
press the corresponding number key.
1 FLOODED
2 AGM
3 AGM SPIRAL
6. Use or to select the UNITS and press NEXT or press
the corresponding number key.
1 CCA
2 JIS
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
JIS Japanese Industrial Standard:
(shown on a battery as a
combination of numbers and letters.
55D23
65D23
75D23
N-55
7. Press or to select the BATTERY RATING or use the nu-
meric keys and press NEXT to continue.
If CCA, use the keypad or scroll to the rating and press
SELECT. The entry range is 100 to 3000, except for DIN
and IEC, which have a range of 100 to 1000.
500 CCA
If JIS, scroll to the JIS number.
When you select the last charge parameter the charger
begins the initial battery analysis.
Chapter 2: Charging

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
16
Chapter 2: Charging
If additional testing is required, progress is shown by a
clockwise-lling pie graph.
8. If IN VEHICLE was selected in step 4, use or to select
the VIN ENTRY method for the vehicle being tested and
press NEXT or press the corresponding number key.
1 USE CVG
2 MANUAL ENTRY
For USE CVG:Turn the vehicle ignition to the "On" position,
but do not start the vehicle and insert the CVG into the
OBD port. The port is usually located on the driver's side
under the dashboard.
Press NEXT when the blue LED on CVG illuminates. If the
VIN is found in the database, the number is displayed on
the Control Module screen. If still not found after cycling
the CVG power, select MANUAL ENTRY to enter the VIN.
NOTE: Automatic VIN retrieval is only available on
2008 and newer Subaru vehicles.
For MANUAL ENTRY:Use the keypad to enter the full VIN
of the vehicle using the battery being tested. To enter
letters, repeatedly tap the alphanumeric key to cycle
through its associated characters.
Alternatively, use the ARROW keys to highlight individual
characters and numbers of the VIN and press SELECT to
add them to your line of text. Press BACK to return to the
Main Menu.
Once the complete VIN has been entered, the BACK option
is replaced by NEXT. Delete one of the VIN digits and then
press BACK to return to the Main Menu.
Diagnostic Charging
If the charger determines that the battery has an insucient
State-of-Charge, it automatically begins Diagnostic Charge
Mode. During the charge session the charger controls the
charging voltage, current and duration based on its continual
analysis of testing and charging data, and the selected battery
parameters.
CHARGING (blinking)
or TESTING
Charging
voltage
Charging
current
Charge
replaced in
amp hours
Estimated
time needed
to charge
Charging mode
Charging
progress
NOTE: The actual time needed to charge the battery
may be less than the estimated time depending on
the battery’s charge acceptance.
When the battery requires testing, the display alternates
between the CHARGING and TESTING screens. The TESTING
screens represent a two-step process:
Step 1: The charger applies an electrical load and tests the
battery’s response.
Step 2: The charger measures the battery’s CCA.
Aborting a Charge Session
If you need to abort the charging session, press and hold the
STOP key until the charging session is aborted. You will not
be able to obtain a test code for an uncompleted charge. After
aborting, select NEXT to return to the Main Menu.
Total
charging time
Amp hours
replaced
Charging
mode

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 17
Chapter 2: Charging
Completing a Charge Session
The charge session is complete when the proper amount of
charge is put back into the battery or the remaining estimated
time to charge counts down to zero.
If the charger nds that the battery is bad before the end of
the estimated time to charge, it displays the decision REPLACE
BATTERY or REPLACE-BAD CELL and the results.
When the decision is GOOD BATTERY, the charger gives you
the option of topping o the battery’s charge level before it
displays the results.
Top-Off Mode
Top-off charging fills a good battery to capacity after a
completed charge session. The charger gives you the option
of selecting YES to proceed to Top-O at any time or NO to
display the results.
If you make no selection within two minutes, the charger
automatically begins Top-O Mode.
You have the option of stopping Top-O Mode at any time by
pressing the STOP key or allowing the charger to complete the
charging. When Top-O Mode is complete, the alarm sounds
every 30 seconds until you press STOP.
Press NEXT to display the diagnostic charging results.
Diagnostic Charging Results
Test results are displayed across multiple screens. Use or
to scroll to each screen. To return to the Main Menu, press
EXIT. To print, press PRINT.
Measured
voltage Measured
capacity
Selected
rating
Total
charging
time
Battery
decision
Replaced
amp hours
Pass/Fail
threshold
REPLACE
decision
GOOD
battery
Test code and VIN for
ALL decisions
Use or to scroll to each screen. To return to the Main
Menu, press EXIT.To print, press PRINT.
IMPORTANT!: When you start a new test, the last bat-
tery test in memory will be overwritten. Remember to
record or print the results if you need to retain them.
Battery Decisions: Diagnostic Charge
Decision Recommended Action
GOOD
BATTERY
Return the battery to service.
REPLACE
BATTERY
Before replacing the battery make sure
battery cables and connections are clean
and solid. If they are loose or corroded,
clean and tighten, then retest.
BAD CELL–
REPLACE
Replace the battery. This decision indicates
a bad cell within the battery.
Risk of explosive gases.
Can cause death or
serious personal injury.
Never attempt to charge a
battery with a bad cell. The
battery must be replaced.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
18
Chapter 2: Charging
State-of-Health (SOH)
Another factor aecting a battery’s ability to crank an engine
is its actual condition or State-of-Health (SOH). It is a measure
of the battery’s condition relative to a fresh battery. Based on
cranking rating, open-circuit voltage, conductance (ability
to deliver current) and battery temperature, the charger will
qualify a battery as “good”or “bad”(should be replaced).
Although a State-of-Health problem can be the result of
defects in construction, it is most often the result of normal
wear-out mechanisms, which are dependant on vehicle needs,
climate, and operating conditions. This results in irreversible
physical and chemical changes until eventually the battery
can no longer hold a charge and supply the power necessary
to start the car and provide auxiliary power to the electrical
system.
As the battery approaches end of life, its deterioration
accelerates, until it nally fails to start the vehicle. Before
failing, the battery may start the vehicle under normal
conditions but may not be able to operate in more extreme
conditions. Extreme heat or cold could expose a weak battery
and cause it to fail.
Jump Start
This charging mode makes high output current avail-
able to boost charge an in-vehicle battery as well as
assist in starting the engine. If you need to abort at
any time, press STOP.
1. In the Charging Menu use or  to highlight the JUMP
START icon and press SELECT to continue.
2. Use or to select a User ID and press NEXT or press
the corresponding number key.
3. Use or to select the BATTERY TYPE, or press the cor-
responding number key.
1 FLOODED
2 AGM
3 AGM SPIRAL
4. The charger will perform a series of tests to determine if
the battery is safe to charge. After the tests have been
successfully completed and the battery has passed, press
NEXT to begin the boost charge.
5. The charger begins boost-charging. Do not crank the en-
gine at this time.
6. Following a successful boost charge, the charger displays
CRANK ENGINE NOW, sounds a warning tone, and ashes
the status light. You can now crank the engine for up to
ve seconds.
7. When the charger displays“JUMP START COMPLETE,”press
STOP key. (The warning tone sounds every second until
you press STOP.)
Manual Charging
The charger charges the battery based on the cur-
rent limit or voltage limit, and charge duration that
you select. Because the charger makes no battery
test decisions in this mode, it does not produce a
test code.
You must monitor the battery’s State-of-Charge
(SOC) and temperature to avoid overcharging.
Any charging after the battery is fully charged can result
in excessive battery temperature, which will“gas”the bat-
tery and boil o electrolyte, shortening battery life.
1. In the Charging Menu use or to highlight the MANUAL
icon and press SELECT.
2. Use or to select a User ID and press NEXT or press
the corresponding number key.
3. Use or to select the LOCATION and press NEXT or
press the corresponding number key.
1 OUT OF VEHICLE
2 IN VEHICLE
4. Use or to select a BATTERY TYPE and press NEXT or
press the corresponding number key.
1 FLOODED
2 AGM
3 AGM SPIRAL
5. Use or to select the LIMIT TYPE and press NEXT or
press the corresponding number key.
1 LIMIT CURRENT
2 LIMIT VOLTAGE
6. Use or to set the limits for VOLTAGE or CURRENT and
press NEXT.
If your limit type is CURRENT, select the maximum
amperage (1 to 60 amps). When in doubt, start with a low
charging current.
10 AMPS
If your limit-type is VOLTAGE, select the maximum voltage.
The range for ooded is 12.7 to 15.3 V; AGM is 12.7 to
14.4V.
12.40 VOLTAGE

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com 19
Chapter 2: Charging
7. Select a charge duration from 5 to 120 minutes, or se-
lect a duration greater than 120 minutes for Continuous
charging. To select a timed charge when“CONTINUOUS”is
displayed, use the key pad to enter a duration 5 and 120
minutes.
Continuous charging stops when you press STOP.
Timed Charge Continuous Charge
NOTE: The charger tests the battery to determine
if it is safe to charge. If it detects that the battery is
defective, it displays a warning that the battery is
unsafe to charge. Press EXIT to return to the Main
Menu.
8. If the battery is safe to charge, the charger will begin
charging at the selected levels. The illustration shows an
example of the information displayed during timed charg-
ing.
CHARGING (blinking)
or TESTING Charging
voltage
Charging
current
Amount
of charge
replaced
Charge
time
countdown
Charging mode
NOTE: If Continuous charge is selected, charging
time is not displayed.
9. When Manual Mode ends, the charger displays the total
charging time for Continuous and Timed Charging, the
amp hours replaced, and the charging mode.
The alarm sounds every 30 seconds until you disconnect
the clamps, or press NEXT.

GR8-1100 EST Subaru
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
20
Chapter 3: Power Supply Mode
Power Supply Mode tests and maintains battery volt-
age in the vehicle at 13.5 volts to allow for uninter-
rupted reashing of vehicle computers, retain vehicle
system settings, or maintain battery voltage.
IMPORTANT!: Before starting Power Supply Mode,
verify that all vehicle loads are o and the key is not in
the ignition.
NOTE: Start the Power Supply Mode before begin-
ning the Control Module reashing process.
1. Use or to highlight the Power Supply Mode icon and
press NEXT to continue, or press the corresponding num-
ber key.
2. Connect the clamps to the battery terminals.
3. In the Options Menu use or  to highlight the POWER
SUPPLY icon and press the SELECT.
4. Use or to highlight the correct USER ID and press
NEXT.
5. Use or to select the BATTERYTYPE and press NEXT to
continue, or press the corresponding number key.
1 FLOODED
2 AGM
3 AGM SPIRAL
6. Press or to select the BATTERY RATING and press
NEXT to continue, or press the corresponding number key.
500 CCA
7. Before entering the Power Supply Mode, the charger will
test the battery to determine if it needs to be charged. A
Warning message is displayed if the battery does not have
a sucient charge.
NOTE: If you choose to charge the battery, you
will need to restart the Power Supply Mode once
the battery has been successfully charged.
NOTE: The charger tests the battery to determine
if it is safe to charge. If it detects that the battery
is defective, it beeps, ashes the status light, and
displays a warning that the battery is unsafe to
charge. Press EXIT to return to the Main Menu.
8. If the battery is safe to charge, the charger begins main-
taining the battery voltage at 13.5 volts.
NOTE: Amperage uctuates in response to the
vehicle’s demands.
If the voltage drops below the 12.8, the charger displays a
warning and raises the voltage to the set point.
9. When nished servicing the vehicle, press the STOP but-
ton or the OFF switch, unplug the power cord and discon-
nect the clamps.
Chapter 3: Power Supply Mode