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Using the Battery Voltage 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.
Place the Function switch in the down position.3.
Make sure the LED on the timer is next to the OFF (O)4. position.
Read the voltage on the digital display or press the Display Mode button to set the 5.
tester to BATTERY % to read the voltage as a percent of charge. Compare the
voltage reading to the chart below.
12 Volt Battery Reading Battery Condition
12.8 or More Charged
12.2 to 12.7 Needs Charging
Less than 12.2 Discharged
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 AUTO button
or the TIMER button . Selecting a time or pressing the AUTO activates the
battery charger and deactivates the tester.
Testing After Charging: To change the battery charger back to a tester, press the Timer
button until the LED next to the OFF position is lit. Then press the Display button
until the VOLTS LED is lit.
Using the Alternator Performance 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.
Place the Function switch in the down position.3.
Make sure the LED on the timer is next to the OFF (O)4. position.
Start the vehicle and turn on the vehicle’s headlights. Read the voltage on the digital 5.
display. Compare the voltage reading to the chart below.
12 Volt Alternator Reading Alternator Condition
14.6 or More Have it checked
13.5 to 14.5 Working
Less than 13.4 Have it checked