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Recommended battery chargers
A) Measured at 20–25 °C with rechargeable battery GBA 12V
3.0Ah
B) Depending on battery in use
C) Limited performance at temperatures < 0 °C
Values can vary depending on the product, scope of application and
environmental conditions. To find out more, visit
www.bosch-professional.com/wac.
Noise/Vibration Information
Noise emission values determined according to
EN 62841‑2‑17.
Typically, the A-weighted sound pressure level of the power
tool is 74 dB(A). Uncertainty K = 3 dB. The noise level when
working can exceed the volume stated. Wear hearing pro-
tection !
Vibration total values a
(triax vector sum) and uncertainty K
h
determined according to EN 62841‑2‑17:
2
2
a
<2.5 m/s
, K=1.5 m/s
.
h
The vibration level and noise emission value given in these
instructions have been measured in accordance with a
standardised measuring procedure and may be used to com-
pare power tools. They may also be used for a preliminary
estimation of vibration and noise emissions.
The stated vibration level and noise emission value repres-
ent the main applications of the power tool. However, if the
power tool is used for other applications, with different ac-
cessories or is poorly maintained, the vibration level and
noise emission value may differ. This may significantly in-
crease the vibration and noise emissions over the total work-
ing period.
To estimate vibration and noise emissions accurately, the
times when the tool is switched off or when it is running but
not actually being used should also be taken into account.
This may significantly reduce vibration and noise emissions
over the total working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and accessories, keeping their hands warm, and
organising workflows correctly.
Rechargeable battery
Bosch sells some cordless power tools without a re-
chargeable battery. You can tell whether a rechargeable bat-
tery is included with the power tool by looking at the pack-
aging.
Charging the battery
Use only the chargers listed in the technical data. Only
u
these chargers are matched to the lithium-ion battery of
your power tool.
Note: Lithium-ion rechargeable batteries are supplied par-
tially charged according to international transport regula-
tions. To ensure full rechargeable battery capacity, fully
Bosch Power Tools
charge the rechargeable battery before using your tool for
GKF 12V-8
the first time.
GAL 12...
GAX 18...
Inserting the Battery
Push the charged battery into the battery holder until it
clicks into place.
Removing the Battery
To remove the rechargeable battery, press the battery re-
lease buttons and pull the battery out. Do not use force to
do this.
Battery charge indicator
The three green LEDs on the battery charge indicator indic-
ate the state of charge of the rechargeable battery. The bat-
tery charge indicator only lights up for five seconds after
start-up.
LED
3× continuous green light
2× continuous green light
1× continuous green light
1× flashing green light
Temperature monitoring/overload protection indicator
The red LED indicator helps you to protect the rechargeable
battery against overheating and the motor against overload.
If the LED indicator is lit up permanently in red, the temper-
ature of the rechargeable battery is too high and the power
tool switches off automatically.
– Switch the power tool off.
– Allow the battery to cool down before you carry on work-
ing.
If the LED indicator is flashing red, then the power tool is
blocked and will switch off automatically.
Pull the power tool out of the workpiece.
The power tool will continue to work as soon as the blockage
is rectified.
Recommendations for Optimal Handling of the
Battery
Protect the battery against moisture and water.
Only store the battery within a temperature range of −20 to
50 °C. Do not leave the battery in your car in the summer, for
example.
Occasionally clean the ventilation slots on the battery using a
soft brush that is clean and dry.
A significantly reduced operating time after charging indic-
ates that the battery has deteriorated and must be replaced.
Follow the instructions on correct disposal.
Fitting
Before carrying out any work on the power tool (e.g.
u
maintenance, tool change etc.), remove the battery
from the power tool. There is risk of injury from uninten-
tionally pressing the on/off switch.
English | 15
Capacity
60–100 %
30–60 %
5–30 %
0–5 %
1 609 92A A2N | (12.08.2024)
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