Actron KAL4780 - Manual (Page 4)

4
Vehicle Battery
1. Turn ignition key OFF; not in the ACCESSORIES
position (Figure 2). Engine needs to be OFF and
all electrical loads must be removed from the
battery for proper testing. If loads still exist, re-
fer to the vehicles operator and service manual.
2. If battery is being charged, then stop, turn
charger OFF and disconnect clamps or leads.
The battery cannot be tested while being
charged.
3. The connections must be clean and must make good contact to achieve cor-
rect test results.
4. On side-post type batteries, install terminal stud adapters. These are not in-
cluded, but are available at most automotive parts stores.
Battery Temperature
The most accurate test results will be obtained when battery temperature is at
approximately 70°F (21.1°C). If testing battery between 70°F (21.1°C) and
40°F (4.4°C), add 0.1 volt for every 10°F (5.6°C) below 70°F. If testing a battery
between 70°F (21.1°C) and 100°F (37.8°C), subtract 0.1V for every 10°F (5.6°C)
above 70°F (21.1°C).
Load Test
1. Connect the tester’s Black clamp
to the negative (-) battery
terminal and the Red clamp to
the positive (+) battery terminal
(Figure 3). Make sure both jaws
make good contact. If required,
rock clamps back and forth to
improve connection.
2. The LCD display will turn on and display the battery voltage. The battery must
be at least 75% charged before conducting the Load Test. At 70°F (21.1°C),
the voltage should be at least 12.45V (or 6.23V for a 6V battery). Remember to
adjust voltage for temperatures other than 70°F (21.1°C).
CAUTION!
•
The Battery Load Tester becomes hot when applying the load. Allow
tester to cool between discharges; about 2 minutes. In warm tem-
peratures, allow more time to cool. If overheating occurs, the LCD
might temporarily become dim. After cooling down, the tester’s LCD
will return to normal.
•
Do not activate and hold the load switch for more than 15 seconds. This
will overload the tester resulting in damage and void the warranty.
Figure 2 Engine OFF
Figure 3 Battery Connections