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• Attach the pole pliers polarity with the insulated terminals of the
battery and gently shake the pole pliers for a secure contact
(upper oxidation "scratched-off").
• Please observe the following table. It specifies the minimum vol-
tage of the battery, during start process with the starter (lower line
= cranking) activated or without starter (upper line). However, the
values depend strongly on the vehicle type, cylinder capacity etc.
The table's specifications apply for vehicles with a cylinder capa-
city lower or equal to 3600 cc. For motors with more than 3600
cc, take the nearest lower voltage value
• the machine (engine) and read the voltage value during the star-
ting process.
Compare the value with the following table. If the value is sub-
stantially lower than the "cranking" voltage, either the starter is
defective or there is a bad cable connection (transmission resi-
stance) or the battery is too small (under-sized) for the motor
vehicle.
Load Voltage
10,4 10,6 10,8 11,0 11,2 11,4 11,6 11,8
Min. Cranking Volts 9,7 10,0 10,3 10,6 10,9 11,2 11,4 11,6
Example: The on-load voltage without starter is 11.0 V. During start,
the voltage collapses to approx. 10.6 V. The motor's
cylinder capacity is 3600 cc or less. If the cylinder capaci-
ty lies above this value, the voltage may not collapse
below 10.3 V* (larger starter currents / performance).
Additional information about lead batteries!
• The starting power (capacity) of a fully-charged battery drops to
under 70% at minus temperatures.
• Most damage to lead batteries comes from overcharging.
• "Warm" batteries are fully-charged at a faster rate than cold bat-
teries.
• every battery loses it's charge. The discharge current is lowest
with maintenance-free batteries.
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used: car batteries (36 – 100 Ah): 500 – 800 CCA, car batteries (>
100 Ah): 800 – 99 CCA, solar batteries: 300 – 500 CCA
Proceed as follows to set the cold start current value:
• Connect the black pole plier (6) to the minus and the red pole plier
(8) to the plus pole of the battery to be checked. Jog carefully at
the pliers to ensure a safe contact.
• By pressing the button "SET CCA" (7) the cold start current value
can be set. This is preset to 500 CCA and each press of the but-
ton changes it.
B Battery Endurance Testing
This test detects whether the battery has enough capacity to start
the motor reliably, even under unfavourable climatic conditions. We
put a load of approx. 100 A on the battery while measuring. The bat-
tery is all right if the battery voltage is relatively constant at> 12 V
while measuring (ca. 10 sec). The battery is both defect or over-
discharged if the voltage collapses within a very short period of
time. Proceed as follows for the measurement:
• Stop the motor, switch off all consumers (except for clock or the
car radio's storage) and remove the ignition key.
• Connect the pole pliers to the battery and set the current value for
a cold start. (see point "A. Setting the cold start current value of
battery").
• A connection with the correct polarity displays the "idle voltage"
of the battery. If the battery voltage is below ca. 12.0 V, charge
the battery before performing an endurance test.
If no current value of >12.0V is displayed after recharging, the
battery is already damaged. If no display follows, maybe one of
the pole pliers is loose, has no contact or the battery voltage is
below ca. 7.5 V.
• Shortly press the "LOAD" (5) button once, the relay picks up and
the endurance testing is started. "-L-" is displayed when the mea-
suring process starts with a battery voltage < 12 V. The battery
should be recharged and the test repeated. After approx. 10
seconds a signal is heard to confirm the end of the measuring
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