Inserting The Battery; Initial Operation - Bosch Professionl D-tect 120 Manual Original

Assembly
The measuring tool can be operated either with a 10.8 V bat-
tery 13 or with AA batteries.
 Remove the batteries/rechargeable batteries from the
measuring tool when not using it for longer periods.
When storing for longer periods, the batteries/rechargea-
ble batteries can corrode and self-discharge.
Battery Charging (see figure C)
 Use only the battery chargers listed on the accessories
page. Only these battery chargers are matched to the lith-
ium-ion battery pack that can be used in your measuring
tool.
Note: The battery supplied is partially charged. To ensure full
capacity of the battery, completely charge the battery in the
battery charger before using your power tool for the first time.
The lithium-ion battery can be charged at any time without re-
ducing its service life. Interrupting the charging procedure
does not damage the battery.
The "Electronic Cell Protection (ECP)" protects the lithium-
ion battery pack against deep discharging. When the battery
pack is discharged, the measuring tool is switched off by a
protective circuit.
 Following the automatic shut off of the measuring tool,
do not continue to press the On/Off button. The battery
can be damaged.
To remove the battery 13 press the unlocking buttons 12 and
pull the battery back and out of the measuring tool. Do not ex-
ert any force.
The battery is equipped with a NTC temperature control
which allows charging only within a temperature range of be-
tween 0 °C and 45 °C. A long battery service life is achieved
in this manner.
Observe the notes for disposal.

Inserting the battery

 Use only original Bosch battery packs with the voltage
listed on the nameplate of your measuring tool. When
using other battery packs, e.g. imitations, reconditioned
battery packs or other brands, there is danger of injury as
well as property damage through exploding battery packs.
Note: Use of battery packs not suitable for the measuring tool
can lead to malfunctions of or cause damage to the measuring
tool.
Insert the charged battery 13 into the handle until you feel it
engage and it is flush with the handle.
Inserting/removing AA battery adapter
(see figure D)
 The AA battery adapter is only intended for the use in cer-
tain Bosch measuring tools and cannot be used with other
power tools.
Inserting AA battery adapter
Place the cover 17 into the slot 11. Place the batteries on the
sealing cap 16 as per the illustration. Next, slide the sealing
Bosch Power Tools
cap 16 over the batteries until you feel it engage and it is flush
with the handle.
Removing AA battery adapter
Press the unlocking buttons 12 of the sealing cap
16 and pull the sealing cap downwards and
off.Take care that the batteries do not fall out.
Hold the device with the battery compartment fac-
ing upward.Remove the batteries. To remove the
inside cover 17, reach into the cover and pull it out
of the measuring tool by applying light pressure to
the side wall.
Rechargeable battery/battery indicator
The rechargeable battery/battery indicator b always displays
the current battery status:
– Battery fully charged
– Battery has 2/3 of its capacity or less
– Battery has 1/3 of its capacity or less
– Battery has 10% capacity or less
– Change battery
Operation
 Protect the measuring tool against moisture and direct
sun light.
 Do not subject the measuring tool to extreme tempera-
tures or variations in temperature. As an example, do
not leave it in vehicles for longer periods. In case of large
variations in temperature, allow the measuring tool to ad-
just to the ambient temperature before putting it into oper-
ation.
 Hold the measuring tool only at the intended grip area
10, so as not to influence the measurement.
 Use or operation of transmitting systems, such as
WLAN, UMTS, radar, transmitter masts or microwaves,
in the close proximity can influence the measuring
function.
 The measuring values can be impaired through certain
ambient conditions. These include, e.g. the proximity
of devices that produce strong electric, magnetic or
electromagnetic fields, moisture, metallic building ma-
terials, foil-laminated insulation materials or conduc-
tive wallpaper or tiles. Therefore, also observe other in-
formation sources (e.g. construction plans) before
drilling, sawing or routing into walls, ceilings or floors.

Initial Operation

Switching On and Off
Check the measuring tool before each use. In the following
cases, safe function can no longer be ensured:
– The measuring indicator h constantly deflects, even
though you hold the device in the air.
– The measuring indicator does not deflect, even though you
keep a finger in the sensor area.
– The device has visible damage or loose components inside
the measuring tool.
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1 609 92A 0Y7 | (29.9.14)