POWX4207 EN
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battery/on-board vehicle power supply or a connected consumer. It is
imperative that you make sure the polarity is correct when you connect up.
Observe the maximum power consumption of the consumer.
▪ NOTE: The direct voltage which is provided (shown in the display) is load-dependent and
without load it is approx. 14.5 V. This function can be used for consumers which are
operated from a vehicle’s cigarette lighter. Refer to and observe the operating manual for
your 12 V consumer.
7.5 Charging the battery
▪ Release or remove the battery stoppers (if fitted) from the battery.
▪ Check the acid level in the battery. If necessary, top up the battery with distilled water (if
possible). Battery acid is aggressive. Rinse off any acid splashes thoroughly with lots of
water and seek medical advice if necessary.
▪ First connect the red charging cable to the positive pole of the battery.
▪ Then connect the black charging cable to the bodywork of the vehicle away from the
battery and the petrol pipe.
▪ Warning! Under normal circumstances the negative battery pole is connected to the
bodywork and you proceed as described above. In exceptional cases it is be possible that
the positive battery pole is connected to the bodywork (positive earthing). In this case,
connect the black charger cable to the negative pole on the battery. Then connect the red
charger cable to the bodywork at a point away from the battery and the petrol pipe.
▪ After the battery has been connected to the charger, you can connect the charger to a
socket. You can now change the settings (see 7.4).
▪ Important! Charging may create dangerous explosive gas and therefore you should avoid
spark formation and naked flames whilst the battery is charging. There is a risk of
explosion! It is essential that you ventilate the rooms well.
▪ When “Ful” appears in the LCD display and all increments (K) are lit, charging has been
completed. The charger holds the battery at 95% – 100% available battery capacity using
pulsed charging. If the charger shows this after just a few minutes, this indicates that the
battery capacity is low. The battery needs replacing.
7.6 Calculate the charging time (fig.2)
The charging time depends on the charge status of the battery. If the battery is fully
discharged, the approximate charging time up to approx. 80% charged can be calculated
using the following formula:
Battery capacity in Ah
Charging time/h =
Amp. (charging current)
The charging current should be 1/10 to 1/6 of the battery capacity.
7.7 Fault indicator (G)
The fault indicator will flash in the following cases:
▪ If the voltage of the battery is less than 3.5V or more than 15 V. The battery is either
unsuitable for charging or is defective. It is also possible that other battery errors or faults
can mean that the battery cannot be charged.
▪ If the terminal clamps are connected to the battery terminals with the wrong polarity. The
protection against swapped poles ensures that the battery and charger do not get
damaged. Remove the charger from the battery and start the charging process from the
beginning again. CAUTION! Protection against swapped poles is not available when the
SUPPLY program is used.
