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Cool Down – After cranking, the charger enters a mandatory 3 minute 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. During the cool down period, no current is delivered to the battery. After 3 minutes, the
digital display will change from displaying the countdown back to displaying rdy.
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:
With the charger unplugged from the AC outlet, connect the charger to the battery, 1.
following the instructions given in sections 6 and 7.
Plug the charger AC power cord into the AC outlet, following the instructions given in 2.
section 8.
If necessary, press the BATTERY TYPE button until the correct type is indicated.3.
Read the voltage on the digital display or press the Display Mode button to set the 4.
tester to BATTERY % to read the voltage as a percent of charge.
Tester and Charger: When rst turned on, the unit operates only as a tester, not as
a charger. To continue to use it only as a tester, avoid pressing the CHARGE RATE
button. Selecting a charge rate activates the battery charger and deactivates the tester.
Pressing the CHARGE RATE 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 10 minutes after the battery
charger is rst powered up, the charger will automatically switch from tester to charger if
a battery is connected.
Tester without Time Limit: If either the DISPLAY MODE or BATTERY TYPE button is
pressed within the rst 10 minutes after the battery charger is powered up, the unit will
remain a tester (not a charger) indenitely, unless a charge rate is selected.
Testing After Charging: After the unit has been changed from tester to charger (by
selecting a charge rate), it remains a charger. To change the battery charger back to a
tester, press the CHARGE RATE switch until all charge rate LEDs are off.
Using the Alternator Performance Tester
Overview
This battery charger has a built-in alternator tester that displays an estimate of the
alternator’s relative output compared to normal alternators. The alternator % values
displayed should be taken as a general reference, not a precise diagnosis. The
alternator tester functions the same as the built-in battery voltage tester (see previous
section for details) with a few differences.
Testing Sequence: There are three basic steps required to operate this unit as an
alternator tester:
With the charger unplugged from the AC outlet, connect the charger to the battery, 1.
following the instructions given in sections 6 and 7.
Plug the charger AC power cord into the AC outlet, following the instructions given in 2.
section 8.
Start the vehicle and turn on the vehicle’s headlights. Read the voltage on the digital 3.
display or press the DISPLAY MODE button to set the tester to ALTERNATOR % to
read the voltage as a percent of output.