POWX4201 EN
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final charging step, maintenance charging, maintains the battery capacity at 95–100% and
therefore keeps the battery fully charged at all times. The charging operation does not need to
be monitored. However, do not leave the battery unattended if you charge it over an extended
period of time, so that you can disconnect it from the mains power supply in the event of a
fault in the charger.
7.2 Explanation of the symbols (fig.1)
▪ A Battery charging status: 25%
▪ B Battery charging status: 50%
▪ C Battery charging status: 75%
▪ D Battery charging status: 100%
▪ E Charging of a 12V battery (lead acid battery,AGM battery and GEL battery).
▪ F Charging of a 12V battery (lead acid battery,AGM battery and GEL battery) in winter
mode with an ambient temperature of – 20°C to 5°C.
▪ G Charging of a 12V battery (lead acid battery,AGM battery and GEL battery) in charge
maintenance mode with 1A charging current.
▪ H Clamps are wrongly connected (reverse polarity) or there is a short-circuit.
7.3 Charging settings
▪ Press the Mode button (1) to set the charging functions 12V (E) and 12V Winter Mode (F).
▪ For batteries with low capacity or for maintenance-charging of seasonal batteries you can
use the “Maintain” mode with reduced maximum charge current. One of the LEDs will
come on in accordance with the settings you have selected (E-G).
7.4 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. All the LEDs will flash for a short time. Then the LED (E) will shine continuously as
soon as the charging status of the battery is indicated. You can now change the charging
settings. LEDs (A-D) will blink in succession until the battery is fully charged (provided it is
not defective). When the battery is fully charged, the LEDs A-D will be lit continuously.
▪ If only the LED flashes (E), this means that although the charger is connected to the
socket, it is not connected to the battery.
▪ 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.
▪ If the charger shows “Battery fully charged” after just a few minutes, this indicates that the
battery capacity is low. The battery needs replacing.
7.5 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:
