Battery Charging; Removing The Battery; Battery Charge Indicator; Inserting/Changing The Circular Saw Blade - Bosch GKT 18V-52 GC Professional Manual Original

Battery Charging

Use only the chargers listed in the technical data. Only
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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.
Do not continue to press the On/Off switch after the
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power tool has automatically switched off. The battery
can be damaged.
Follow the instructions on correct disposal.

Removing the battery

The battery (21) is equipped with two locking levels to pre-
vent the battery from falling out if the battery release button
(22) 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 (21), press the release button (22)
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
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 (20) (see "Status indicators", page 26).
Battery model GBA 18V...
LEDs
3× continuous green light
2× continuous green light
1× continuous green light
1× flashing green light
Bosch Power Tools
Battery model ProCORE18V...
LEDs
5× continuous green light
4× continuous green light
3× continuous green light
2× continuous green light
1× continuous green light
1× flashing green light

Inserting/changing the circular saw blade

Remove the battery from the power tool before carry- u
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.
Wear protective gloves when fitting the saw blade.
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Danger of injury when touching the saw blade.
Do not use abrasive wheels as the application tool un-
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der any circumstances.
Selecting the saw blade
You will find an overview of recommended saw blades at the
end of these operating instructions.
Only use saw blades that match the specifications
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given in this operating manual and that are tested and
marked in accordance with EN 847-1
Removing the saw blade (see figure A)
Set the maximum cutting depth, (see "Setting the cutting
depth (see figure C)", page 24).
To change tools, we recommend that you place the power
to
tool down on the battery side.
– Flip the lever (3) forwards.
– Slide the lock-off switch (2) forwards and press the saw
into the base plate (8) until this engages in the position
for the saw blade change.
– Press and hold the spindle lock button (28).
Do not press the spindle lock button (28) while the
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saw spindle is moving. The power tool may become
damaged if this happens.
– Use the hex key (9) to undo the clamping bolt (23) in ro-
tational direction ➋.
– Remove the clamping flange (24) and the saw blade (25)
Capacity
from the saw spindle (27).
60−100 %
Fitting the saw blade (see figure A)
30−60 %
Set the maximum cutting depth, (see "Setting the cutting
5−30 %
depth (see figure C)", page 24).
0−5 %
To change tools, we recommend that you place the power
tool down on the battery side.
– Flip the lever (3) forwards.
English | 23
Capacity
80−100 %
60−80 %
40−60 %
20−40 %
5−20 %
0−5 %
1 609 92A 4XT | (11.02.2020)