Before Use; Fitting The Battery; Charging The Battery - Hilti SF 144-A Mode D'emploi

live, for example, when an electric cable is damaged
accidentally. This presents a serious risk of electric shock.
5.3.5 Work area
a) Ensure that the workplace is well lit.
b) Ensure that the workplace is well ventilated. Ex-
posure to dust at a poorly ventilated workplace may
result in damage to the health.

6 Before use

6.1 Battery use and care
NOTE
Battery performance drops at low temperatures. Never
use the battery until the cells become fully discharged.
Change to the second battery as soon as a drop in per-
formance is noticed. Recharge the battery immediately
so that it is ready for reuse.
Store the battery in a cool, dry place. Never store the
battery where it is exposed to direct sunlight or sources
of heat, e.g. on heaters / radiators or behind a motor
vehicle windscreen. Batteries that have reached the end
of their life must be disposed of safely and correctly to
avoid environmental pollution.

6.2 Charging the battery

DANGER
Use only the Hilti batteries and Hilti chargers listed
under "Accessories".
6.2.1 Charging a new battery for the first time
A new battery must be charged correctly for the first time
before use. This will ensure that the cells form correctly.
Incorrect initial charging may have a permanent, negative
effect on battery capacity. Please refer to the applicable
5.3.6 Personal protective equipment
The user and any other persons in the vicinity must
wear ANSI Z87.1-approved eye protection, a hard
hat, ear protection, protective gloves and breathing
protection while the machine is in use.
battery charger's operating instructions for information
about initial charging.
6.2.2 Charging a previously used battery
Ensure that the outer surfaces of the battery are clean
and dry before inserting it in the corresponding charger.
Read the operating instructions for the charger for further
information about the charging procedure.
Li-ion batteries are ready for use at any time, even when
only partly charged. Charging progress is indicated by
the LED display (see charger operating instructions).

6.3 Fitting the battery

CAUTION
Before fitting the battery, check that the power tool
is switched off and that the safety lock is engaged
(forward/reverse switch in the middle position). Use
only the Hilti batteries approved for use with this
power tool.
CAUTION
Check that the terminals on the battery and in the
power tool are free from foreign objects before in-
serting the battery in the power tool.
1. Push the battery into the power tool from below as
far as it will go and until it is heard to engage with a
click.
2. CAUTION A falling battery may present a risk of
injury to yourself or others.
Check that the battery is seated securely in the
power tool.
6.4 Removing the battery 2
1. Press both battery release buttons.
2. Pull the battery downwards out of the power tool.
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