12 | English
Using the
® Low Energy Module
GCY42
Read the corresponding operating instructions for informa-
tion about the Bluetooth® Low Energy ModuleGCY42.
Battery Charging
u Use only the chargers listed in the technical data. Only
these chargers are matched to the lithium-ion battery of
your power tool.
Note: The battery is supplied partially charged. To ensure
full battery capacity, fully charge the battery in the charger
before using your power tool for the first time.
The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
u Do not continue to press the On/Off switch after the
power tool has automatically switched off. The battery
can be damaged.
Follow the instructions on correct disposal.
Removing the battery
The battery (19) is equipped with two locking levels to pre-
vent the battery from falling out if the battery release button
(30) is pressed unintentionally. As long as the battery is in-
serted in the power tool, it is held in position by means of a
spring.
To remove the battery (19), press the release button (30)
and pull the battery to the rear and out of the power tool. Do
not use force to do this.
Battery charge indicator
The green LEDs on the battery charge indicator indicate the
state of charge of the battery. For safety reasons, it is only
possible to check the state of charge when the power tool is
not in operation.
Press the button for the battery charge indicator or to
show the state of charge. This is also possible when the bat-
tery is removed.
If no LED lights up after pressing the button for the battery
charge indicator, then the battery is defective and must be
replaced.
Note: The state of charge of the battery is also displayed on
the user interface (3) (see "Zustandsanzeigen", page15).
Battery model GBA 18V...
LEDs Capacity
3× continuous green light 60−100%
2× continuous green light 30−60%
LEDs Capacity
1× continuous green light 5−30%
1× flashing green light 0−5%
Battery model ProCORE18V...
LEDs Capacity
5× continuous green light 80−100%
4× continuous green light 60−80%
3× continuous green light 40−60%
2× continuous green light 20−40%
1× continuous green light 5−20%
1× flashing green light 0−5%
Inserting/changing the circular saw blade
u Remove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
u Wear protective gloves when fitting the saw blade.
Danger of injury when touching the saw blade.
u Only use saw blades that match the specifications
given in this operating manual and that are tested and
marked in accordance with EN 847-1
u The permitted speed of the application tool must be at
least equal to the maximum speed marked on the
power tool. If accessories run faster than their rated
speed, they may break and fly off.
u Do not use abrasive wheels as the application tool un-
der any circumstances.
Selecting the saw blade
You will find an overview of recommended saw blades at the
end of these operating instructions.
Removing the saw blade (see figure A)
To change tools, we recommend that you place the power
tool down on the front side of the motor housing.
– Press and hold the spindle lock button (10).
u Do not press the spindle lock button (10) while the
saw spindle is moving. The power tool may become
damaged if this happens.
– Use the hex key (31) to undo the clamping bolt (29) in ro-
tational direction .
– Swing the retracting blade guard (12) back and hold on
to it firmly.
– Remove the clamping flange (28) and the saw blade (27)
from the saw spindle (25).
1 609 92A 5MD | (19.03.2020) Bosch Power Tools
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