GR8-1200 OEM
Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527
www.midtronics.com
36
The GR8 charges the battery based on the current
limit or voltage limit, and charge duration that
you select.
!
CAUTION
:
You must monitor the battery’s State-of-
Charge (SOC) and temperature to avoid overcharg-
ing.
Any charging after the battery is fully charged
can result in excessive battery temperature, which
will “gas” the battery and boil off electrolytes, short-
ening battery life.
I
MP
ORTANT
Only the large clamps from the GR8 charge engine
should be connected to the battery terminals when
performing diagnostic charging.
1. In the Main Menu, highlight the MANUAL icon and press
the
NE
X
T
key.
2. Use the UP or DOWN ARROW key to select the BATTERY
TYPE, or press the corresponding numerical key to move
the dot to the option button of your choice.
1
REGULAR FLOODED
2
AGM
3
AGM SPIRAL
Press the NEXT soft key. The BACK soft key returns you to
the Main Menu at the start of the test and to the previous
screen as you progress.
3. Use the UP or DOWN ARROW key to select the LIMIT TYPE,
or press the corresponding numerical key (1 or 2) to move
the dot to the option button of your choice.
1
LIMIT CURRENT
2
LIMIT VOLTAGE
Press the
NEXT
soft key. 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 op-
tion buttons, press the NEXT
soft key to continue
to the next step. If you use the alphanumeric key-
pad to enter the number preceding the option
button, no additional keypress is needed.
4. You can set limits using VOLTAGE or CURRENT.
If your limit type is CURRENT, select the maximum
amperage (1 to 60 amps). When in doubt, start with a low
charging current. Press the NEXT soft key.
50
AMPS
If your limit-type is VOLTAGE, select the maximum voltage.
The range for regular is 12.7 to 15.3 V; AGM is 12.7 to 14.4
V. Press the NEXT soft key.
12.40
VOLTAGE
5. 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 the
S
TO
P
key.
T
imed
C
harge
C
ontinuous
C
harge
Selection Screen
Selection Screen
Chapter 10: Manual Charging
Chapter 10: Manual Charging
