9
Clean the battery poles to remove dust and corrosion residue.
6.2 CHARGING A BATTERY
6.2.1 PREPARATION
1.28
≙
charged battery
1.21
≙
battery half charged
1.14
≙
discharged battery
In case of maintenance-free batteries, please follow the
instructions of the battery manufacturer to the letter.
Only for open batteries:
Only Remove the sealing plugs
from the battery cells. Replenish distilled water up to the
minimum fill level. Leave the cells of the battery open until
the end of the charging process.
Clean the battery poles to remove dust and corrosion residue.
6.2 CONNECTING THE BATTERY CHARGER
Make sure that the charger is not connected
to the mains socket and that the mains switch
(position 8 in the overview) is set to "OFF".
Always connect the red positive cable (+)
(Position 9 in the overview) of the charger to
the positive pole of the battery first. Subse-
quently, connect the black minus cable (-)
(Position 10 in the overview) to the negative
pole of the battery.
CAUTION
Figure 2: Mains switch
We recommend not charging the battery
in the installed state. When charging, acid
splashes are unavoidable. The acid will attack
paint and other components of the vehicle.
If the battery is connected to the vehicle,
the vehicle electronics may be damaged.
Observe the instructions from the vehicle man-
ufacturer.
If you are charging the battery when it is
installed, disconnect it from the vehicle's
electrical system. To do this, read the
operating instructions of your vehicle or ask
your specialist workshop.
Always connect the red positive cable (+) (Position 9 in the
overview) of the charger to the positive pole of the battery
first. Then connect the black negative cable (-) to the car body
(exposed part), far away from the battery, the carburettor
and fuel lines. Always maintain this sequence.
Now plug the mains plug (position 1 in the overview) into
the socket.
First use the selector switch (position 5 in the overview) to set
the voltage suitable for your battery, 12/24 V
6.2.3 SETTING THE BATTERY CHARGER
Figure 3: Battery voltage selector switch
Use the selector switch (position 7 in the overview) to set
whether the battery should be charged slowly or quickly.
MIN (slow) – BOOST (fast)
Fig. 4: Selector switch MIN-BOOST
Refer to the operating instructions of your battery to
determine the charging current with which it can be charged.
For small batteries, up to 20 Ah, charging should be done
with "MIN". The adjustable charging currents are listed in
chapter 3. Specifications.
The charging current drops during the course of charging.
When the charging current approaches zero, the battery is
fully charged. In order to prevent overloading damages to
the battery, the charging current of the battery must be
constantly monitored.
The charging duration of the battery to be charged depends
on a number of factors, for example, the capacity of the
battery, the ambient temperature, the charging state, the
performance of the charger, etc. The exact charging state
of the battery can only be determined with a battery acid
tester (battery acid density meter) which enables you to
measure the specific density of the electrolyte fluid. The
following values apply (kg/l at 20 °C):
Do not leave the device unattended
during charging!
6.2.4 CHARGING PROCESS
Start the charging process by pressing the power switch
(position 8 in the overview) to "ON". The current charging
current can be read on the ammeter (position 2 in the
overview).
