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process. Simultaneously, the battery state is displayed via three
LED's (green, yellow or red). If in display (4) "-L-" is shown the
battery voltage sank below 7.5 V during the test.
• Please observe the following table, it shows the different battery
conditions:
LED Display
Battery status display:
green LED
The battery is insufficiently charged.
illuminated
yellow LED
The battery is insufficiently charged.
illuminated
This battery is either empty or defective. If it is a
conventional maintenance-free battery, determi-
ne the acid density for battery with an acid pipet-
te, (for at least 1.20 to 1.22 kg/l). The value
remains under approx. 1.24 kg/l after charging.
The battery is used up (after approx. 5 to 8
years) and must be replaced.
red LED
The battery is possibly defective or seriously
undercharged
and should be replaced.
Caution!
During the test, the upper unit cover of the tester
gets very hot (with the cooling holes (2)). Let the
tester cool down for at least a minute before you
perform a further test. Never perform more than 3
test within 5 minutes.
C Charging voltage measurement (headlight test)
The charging system of the motor vehicle is tested with this measu-
rement. A sustained under or overcharging of the motor vehicle bat-
tery will inevitably lead to damage. The charge test should be per-
formed (described above) before this test. If the battery is OK, you
can continue the measurement.
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Caution!
The engine should be at operating temperature.
Proceed as follows:
- Attach the pole pliers (+) to the positive terminal (+) of the bat-
tery and the black, isolated clamp to the negative terminal (-) of
the battery. Gently shake the pole pliers at the terminal to ensu-
re contact.
- switch off all power loads (lights, fans, discs, boosters, etc.),
start the engine and hold at a slowing increasing idle speed of
approx. 1500 RPM.
- never press the button "LOAD" (5) during this measurement
- read the voltage value on the digital display
- now turn on the high-beam headlights and set your fans to the
highest level. The voltage display should change no more than
around approx. 0.1 to 0.3 volts (V).
If the display remains relatively stable, the charging system of your
motor vehicle is OK. If the voltage changes to more than approx. 0.3
V (above or below), you have your charging electrical equipment
(headlights, regulators, brushes, drive-belts, cables, points, cables,
plug connector etc.) examined by a mechanic.
D Starter test
With this test, it can be determined relatively easily whether your
vehicle starter does not take enough current from the battery. Cur-
rents of more than approx. 200 Amp can be produced. Make abso-
lutely sure that the battery is correct before this test. If the battery is
weak or defective, then this test is not useful. Proceed as follows:
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