Mode Selection; Pulse Charging; Appliance Protection Function; Overheating Protection - Bosch C3 Operating Instructions Manual

english | 8

Mode selection

3 Select the required mode by pressing the
mode selection button (8).
3 The LED for the desired mode will light up.
The following modes are available:
Mode 1 | 6 V (7.2 V / 0.8 A)
Suitable for batteries with a capacity of less
than 14 Ah in normal state. Charging mode for
WET batteries and the majority of GEL batteries.
Press the mode selection button (8) to select
Mode 1. The LED (12) will light up. If no further
action is then taken, charging starts automatically
after a few seconds and the LED (10) also flashes.
After successful charging of the battery, the LED
will light up (11) and (10) go out.
After a short delay the unit switches automatically
to trickle charge mode and the LED (11) lights.
Mode 2 | 12 V (14.4 V / 0.8 A)
Suitable for batteries with a capacity of less
than 14 Ah in normal state. Charging mode for
WET batteries and the majority of GEL batteries.
Press the mode selection button (8) to select
Mode 2. The LEDs (13+16) will light up. If no
further action is then taken, charging starts auto-
matically after a few seconds and the LED (10) also
flashes. After successful charging of the battery,
the LED will light up (11) and (10) go out.
After a short delay the unit switches automatically
to trickle charge mode and the LED (11) lights.
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Mode 3 | 12 V (14.4 V / 3.8 A)
Suitable for batteries with a capacity of more
than 14 Ah in normal state. Charging mode for
WET batteries and the majority of GEL batteries.
Press the mode selection button (8) to select
Mode 3. The LED (14+16) will light up. If no further
action is then taken, charging starts automatically
after a few seconds and the LED (10) also flashes.
After successful charging of the battery, the LED
will light up (11) and (10) go out.
After a short delay the unit switches automatically
to trickle charge mode and the LED (11) lights.
Mode 4 | 12 V (14.7 V / 3.8 A)
Suitable for batteries with a capacity of more
than 14 Ah in cold state or for many AGM batteries.
Press the mode selection button (8) to select
Mode 4. The LEDs (15+16) will light up. If no
further action is then taken, charging starts auto-
matically after a few seconds and the LED (10) also
flashes. After successful charging of the battery,
the LED will light up (11) and (10) go out.
After a short delay the unit switches automatically
to trickle charge mode and the LED (11) lights.
Battery charger | C3 | 09.2014

Pulse charging

This is an automatic charger function which
cannot be selected manually. If the battery
voltage in 12 V mode is between 8 V (± 0.5 V)
and 10.5 V (± 0.5 V) at the start of charging,
the charger switches automatically to pulse
charging. On attaining a battery voltage above
10.5 V (± 0.5 V), the charger switches auto-
matically to the charging mode previously
selected. This enhances the charging process.

Appliance protection function

The charger switches to standby mode in the follow-
ing abnormal situations.
3 Battery voltage < 6 V (12 V batteries)
3 Open circuit
3 Reverse polarity
In the event of reverse polarity, the LED (9)
will also light up. If no other setting is made,
the system remains in standby mode.
In the event of a short circuit at the charging cable,
fuse (4a) prevents damage to the device and the
electrical system. Check fuse (4a) if Mode selection
is not possible.

Overheating protection

If the unit becomes excessively hot during charging,
the output power is automatically reduced to avoid
damaging the unit.
09.2014 | C3 | Battery charger
9 | english

Maintenance and upkeep

Always unplug the mains connector before work-
ing on the charger.
The unit is maintenance-free.
3 Switch off the unit.
3 Use a dry cloth to clean the plastic surfaces
of the unit.
3 Never use solvents or other aggressive
cleaning agents.

Disposal

Only for EC countries:
Never dispose of electrical
equipment together with
household refuse.
According the European Guideline 2002/96/EC
for Waste Electrical and Electronic Equipment
and its implementation into national right, power
tools that are no longer usable must be collected
separately and disposed of in an environmentally
correct manner.
The packaging is made of ecological materials
which can be disposed of at local recycling facilities.
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