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28
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Diagnostic Charging Modes
Diagnostic Charging has four modes that the GR8
may use to determine the State-of-Health of the
battery while bringing it to a full State-of-Charge.
Initial
Analysis:
The GR8 first 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 GR8 determines that the battery
is good, needs charging, and is safe to
charge, it proceeds to Diagnostic Charge
Mode. During the charging session, the GR8
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 GR8 continues to test the battery
throughout Diagnostic Mode and may
determine at some point that the battery
needs to be replaced.
Top-Off
Mode:
This mode occurs automatically at the end
of the charge cycle to allow the charger to
fill a good battery to capacity. Top-Off 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 GR8 automatically
switches to Recovery Mode in an attempt to
recover a hard-to-charge battery.
Selecting the Charging Parameters
Make sure all vehicle accessory loads are off, the key is not in
the ignition, and the doors are closed.
IMPORTANT:
When you start a new charge ses-
sion, the last battery test results in memory will
be overwritten. Remember to record or print the
results if you need to retain them.
1. In the Main Menu the CHARGING icon is highlighted. Press
the
SELECT
key.
2. In the Charging Menu use the
LEFT
(
t
) or
RIGHT (
u
)
AR-
ROW
key to highlight the DIAGNOSTIC icon. Press the
SE-
LECT
soft key.
3. Use the
UP
(
p
) or
DOWN
(
q
)
ARROW
key to select the
battery LOCATION, or press the corresponding numerical
key (1 or 2) to move the dot to the option button of your
choice.
1
OUT OF VEHICLE
2
IN VEHICLE
The
BACK
soft key returns you to the Main Menu at
the start of the test and to the previous screen as you
progress.
NOTE:
If you use the
ARROW
keys to select
option buttons, press the
NEXT
soft key to
continue to the next step. If you use the alpha-
numeric keypad to enter the number preced-
ing the option button, no additional keypress is
needed.
4.
Use the
UP
(
p
) or
DOWN
(
q
)
ARROW
key to select
whether the vehicle odometer reading is above or be-
low 250 miles.
1
BELOW 250 MILES
2
ABOVE 250 MILES
Chapter 6: Charging Menu
Chapter 6: Charging Menu—Diagnostic Charging
GR8 1100
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
Summary of Contents for GR8 1100
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