Charging procedure
device detects that the battery voltage has fallen below 12 V
in maintenance mode it will start the programmed sequence
from the beginning again.
In order to minimize or disperse deposits of sulphate on the
lead plates, the battery is subjected, in this mode, every 30
seconds to a discharge pulse of up to about 80 A and lasting
about 100 µs. These crystalline deposits of sulphate particularly
tend to form in lead batteries that are stored for a long time,
e.g. over the winter, only used rarely, or are only discharged
with low currents. This mode deliberately avoids the use of
"high voltage" charging procedures (20 V to 30 V), as is done
by the chargers from some other manufacturers, since this
method requires the user to remove or disconnect the battery,
and this is not always desirable. If the user ignores this rule,
the highly sensitive electronic devices in modern vehicles can
be damaged.
This periodic discharge pulse can significantly lengthen the
useful life of lead batteries. The lead sulphate has a tendency
to form clumps of crystals. This tendency is particularly strong
when discharge is slow or during self-discharge. This reduces
the plate surface within the battery (crystalline sulphate covers
the lead plates), and the capacity falls. The more thickly the
plates are covered, the less energy the lead battery can deliver.
Deposits of sulphate are the main reason for the failure of lead
batteries.
To combat these sulphate deposits when the charger is in
continuous use, it cycles between an hour in trickle charging
mode and an hour in desulphating mode.
Note:
Once the battery is fully charged (the "100%" segment is lit),
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it may take a few more hours (residual charging), depending
on the battery capacity (size) and condition (age, level of
sulphation etc.), before the charger switches into test mode
and then into trickle charging mode.
If the battery is charged in the vehicle, it sometimes happens
that the device does not switch into the "Ready" (Fertig)
mode. One possible cause is that a device in the vehicle may
be continuously drawing some current, and this current,
together with the battery's residual charging current, adds
up to more than 300 mA.
Fault display
When running, the device can indicate seven different fault
conditions:
• Fault N1 ("Err 001"): The battery is wrongly connected (wrong
polarity), or there is a short-circuit in the connecting cable.
• Fault N2 ("Err 002"): The battery voltage measured is too high
(wrong battery, e.g. 24 V)
• Fault N3 ("Err 003"): The battery is found to be defective.
• Fault N4 ("Err 004"): The device has detected overheating.
(Charging stops. Let the charger cool down, and start it
again).
• Fault N5,6,7: Internal fault in the charger (send charger to
manufacturer)
Technical specifications
Power supply 230 V/50 Hz, AC, charging current selectable
between 1.5 A max. for motorcycle batteries (that is 12 V
lead batteries between 5 and 30 Ah capacity) and 4 A max.
for car batteries (30 to 100 Ah), battery capacity between
5 Ah and 100 Ah, temperature range -15°C to + 40°C.
Power consumption approx. 4 W (Standby) up to 90 W
(max. charging current). Battery connection with clip
connectors or ring terminals.
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Technical specifications
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