• 12 •
Compare the reading to the
following chart.
6V Battery
Voltage
Reading
12V Battery
Voltage
Reading
Battery
Condition
6.4 or more 12.8 or more Charged
6.1 to 6.3 12.2 to 12.7
Needs charging
Less than 6.1 Less than 12.2 Discharged
TESTING AFTER CHARGING
After the unit has been changed
from tester to charger (by selecting
a desired rate), it remains a
charger. To change the battery
charger back to a tester, press the
Rate Selection button.
NOTE: The battery tester is only
designed to test batteries. Testing
a device with a rapidly changing
voltage could yield unexpected or
inaccurate results.
USING THE ALTERNATOR
PERFORMANCE TESTER
1. With the charger unplugged
from the AC outlet, connect
the charger to the battery,
following the instructions given
in previous sections (for ”in
vehicle”).
2. Plug the charger AC power
cord into the AC outlet.
3. Press the display button for
the alternator selection.
4. DO NOT press the Rate
Selection button (this is tester
mode, not charge mode).
5. Start the vehicle, rev the
engine at 2000 rpm for 30
seconds and turn on the
vehicle’s headlights or other
accessories.
6. Read the voltage on the
digital display. The alternator
percent range is from 0% to
100%. Readings below 0%
(13.2 volts) will read LO and
readings above 100% (14.6
volts) will read HI. If you get
a HI or LO reading, have the
electrical system checked by a
qualied technician.
12. MAINTENANCE AND CARE
A minimal amount of care can
keep your battery charger working
properly for years.
• Clean the clamps each time you
are nished charging. Wipe off
any battery uid that may have
come in contact with the clamps to
prevent corrosion.
• Occasionally cleaning the case
of the charger with a soft cloth
will keep the nish shiny and help
prevent corrosion.
• Coil the input and output cords
neatly when storing the charger.
This will help prevent accidental
damage to the cords and charger.
• Store the charger unplugged from
the AC power outlet in an upright
position.
• Store inside, in a cool, dry place.
Do not store the clamps clipped
together, on or around metal, or
clipped to the cables.
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