EINHELL BT-BC 150 Original Operating Instructions page 12

Anleitung_BT_BC_150_SPK7:_
GB
equipment (such as ABS, ASR, injection pump
and on-board computer). Any voltage peaks that
occur may cause defects in these electronic
modules. Therefore the battery should be
disconnected from the electrical system before
being charged.
Please also refer to the instructions in the
ownerʼs manuals for the car, radio, navigation
system, etc.
Charging for 10 minutes at the highest charge
setting is usually sufficient for starting a vehicle
without jump starting.
Please remove all cables from the cable storage
compartment when charging or starting a
battery.
a) 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).
Important. Battery acid is aggressive. Rinse off any
acid splashes thoroughly with lots of water and seek
medical advice if necessary.
Figure 5/6:
Select the charging voltage. Pay particular attention
to the voltage details on the battery you wish to
charge. Select the charging current (amps) according
to numbers 1 (lowest charging current) to 5 (highest
charging current). Note the minimum capacity of the
battery in section 4. Technical data.
Figure 7:
First connect the red charging cable to the positive
pole of the battery.
Figure 8:
Then connect the black charging cable to the
bodywork of the vehicle 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 supplying
230V~50Hz. Do not connect it to a socket that
supplies any other mains voltage.
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!
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Calculating the charging time
The charging time depends on the charge status of
the battery. If the battery is fully discharged, the
approximate charging time can be calculated using
the following formula:
Charging time/h =
Example =
A high initial current, approximately equal to the
rated current will flow in a normally discharged
battery. As the charging time increases, the charging
current will fall.
Old batteries for which the charging current does not
fall are suffering from a defect, such as a cell short
circuit or ageing damage.
The charging current should be 1/10 to 1/6 of the
battery capacity.
Figure 9:
A high charge can only be identified by measuring
the acid density using an acid tester. Note! Gases
are released during the charging process (bubbles
will form on the surface of the battery fluid). It is
essential that you ventilate the rooms well.
Acid density values (kg/l at 20°C)
1.28
1.21
1.16
When charging is completed, turn the charging
voltage switch to "0".
Pull the plug out of the socket.
Figure 10:
First disconnect the black charging cable from the
bodywork.
Figure 11:
Then release the red charging cable from the
positive pole on the battery.
Screw or push the battery stoppers back into position
(if there are any).
b) Jump starting function
1. Set the battery voltage (12V or 24V)
2. Move the current setting switch to setting 5. (Fig.
6).
Battery capacity in Ah
Amp. (arithmetic charging current)
24 Ah
= 9,6 h max.
2,5 A
Battery charged
Battery semi-charged
Battery discharged