Schumacher Electric SC-10030A Owner's Manual page 14

Cranking – When cranking is detected, the charger will automatically
deliver up to its maximum output as required by the starting system for up
to 3 seconds or until the engine cranking stops. The digital display shows a
countdown of the remaining crank time in seconds. It starts at 5 and counts
down to 0.
Cool Down – After cranking, the charger enters a mandatory 3 minute (180
second) cool down state. During this period, no settings can be changed. The
buttons are ignored. The digital display indicates the remaining cool down time
in seconds. It starts at 180 and counts down to 0. The ENGINE START LED
blinks once every second. During the cool down period, no current is delivered
to the battery. After 3 minutes, the ENGINE START LED will stop blinking and
will light continuously, indicating that another crank cycle can be started. The
digital display will change from displaying the countdown back to displaying the
battery voltage. The CHARGING (yellow) LED will then be lit.
Using the Battery Voltage Tester
Overview
This battery charger has a built-in voltmeter to test your battery's state of
charge. The charger does not have a built in load tester. As such, a recently
charged battery could have a temporarily high voltage due to what is known as
"surface charge." The voltage of such a battery will gradually drop during the
period immediately after the charging system is disengaged. Consequently, the
tester could display inconsistent values for such a battery. For a more accurate
reading, the surface charge should be removed by temporarily creating a load
on the battery, such as by turning on lights or other accessories for a couple
of minutes before you read the display. Read it a couple of minutes after you
have shut the headlights off.
Testing Sequence: There are four basic steps required to test the battery
state of charge:
1. With the charger unplugged from the AC outlet, connect the charger to the
battery following the instructions given in Sections 6 and 7.
2. Plug the charger AC power cord into the AC outlet, following the
instructions given in Section 8.
3. If necessary, press the BATTERY TYPE button until the correct type is
indicated.
4. Read the voltage on the digital display or press the Display Mode button to
set the tester to BATTERY % to read the voltage as a percent of charge.
Tester And Charger: When first turned on, the SC-10030A operates only as a
tester, not as a charger. To continue to use it as only a tester, avoid pressing the
BATTERY SIzE button. Selecting a charge rate activates the battery charger and
deactivates the tester. Pressing the BATTERY SIzE button when the ENGINE
START LED is lit (except during the 180 second cool down) will shut off the
charger and activate the tester.
Power-Up Idle Time Limit: If no button is pressed within 15 minutes after the
battery charger is first powered up, the charger will automatically switch from
tester to charger if a battery is connected. In that case, the charger will be set
to the start up default settings.
Tester without Time Limit: If either the DISPLAY MODE or BATTERY
TYPE button is pressed within the first 10 minutes after the battery charger is
powered up, the unit will remain a tester (not a charger) indefinitely, unless a
charge rate is selected.
Testing After Charging: After the SC-10030A has been changed from tester
to charger (by selecting a charge rate) it remains a charger. To change the SC-
10030A back to a tester, press the BATTERY SIzE button until all BATTERY
SIzE LEDs are off.
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