Hilti PR 2-HS Operating Instructions Manual page 27

6.3.2 Recharging a battery
1. Check that the outer surfaces of the battery are
clean and dry.
2. Insert the battery in the tool.
NOTE Li‑ion batteries are ready for use at any time,
even when only partly charged.
Charging progress is indicated by the LEDs when
the tool is switched on.
6.4 Options for charging the battery
DANGER
The PUA 81 AC adapter is for indoor use only. Avoid
ingress of moisture.
NOTE
Make sure that the recommended temperature range is
observed when charging (0 to 40°C).
6.4.1 Charging the battery in the tool 3
1. Insert the battery in the battery compartment (see
6.1).
2. Rotate the socket cover until the charging socket on
the battery becomes visible.
3. Plug the cord from the AC adapter or motor vehicle
power adapter into the battery.
The battery will be charged.
4. Switch the tool on in order to display the charging
status while charging is in progress.
6.4.2 Charging the battery outside the tool 4
1. Remove the battery (see 6.2).
2. Connect the cord from the AC adapter or the motor
vehicle power adapter to the battery.
The red LED on the battery indicates charging activ-
ity.
6.4.3 Charging the battery while the tool is in
operation 3
DANGER
Operation in "charging during operation" mode is not
permissible for outdoor use or in damp surroundings.
CAUTION
Avoid ingress of moisture. Moisture in the interior of
the tool may cause a short circuit and chemical reactions
resulting in burns to the skin or fire.
1. Rotate the socket cover until the charging socket on
the battery becomes visible.
2. Plug the cord from the AC adapter into the battery.
The tool continues to operate while charging and
battery charging status is indicated by the LEDs on
the tool.
6.5 Battery use and care
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 glass.
Batteries that have reached the end of their life must be
disposed of safely and correctly to avoid environmental
pollution.
6.6 Switching the tool on
Press the on/off button.
NOTE
After switching on, the tool begins to level itself automat-
ically. The laser switches on when leveling is complete.
6.7 LED indicators
Please refer to section 2 "Description".
6.8 Inserting the batteries in the laser receiver 8
DANGER
Do not use damaged batteries.
DANGER
Do not mix old and new batteries. Do not mix batteries of
different makes or types.
NOTE
The laser receiver may be powered only by batteries man-
ufactured in accordance with the applicable international
standards.
1. Open the laser receiver battery compartment.
2. Insert the batteries in the laser receiver.
NOTE Check to ensure correct polarity when insert-
ing the batteries.
3. Close the battery compartment cover.
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