Bosch GLL Professional 12-22 Original Instructions Manual page 13

Pay attention to the mains voltage. The voltage of the power source must match the
u
voltage specified on the rating plate of the power adaptor. Power adaptors marked
with 230 V can also be operated with 220 V.
Only use the USB connection to charge the battery at an ambient temperature of
u
between +10 °C and +35 °C. Charging outside of this temperature range can dam-
age the battery and increase the risk of fire.
Note: Lithium-ion rechargeable batteries are supplied partially charged according to in-
ternational transport regulations. To ensure full rechargeable battery capacity, fully
charge the rechargeable battery before using your tool for the first time.
If the lithium-ion battery pack is running low, the laser lines will flash slowly for approx.
1 min.
If the lithium-ion battery pack is empty, the laser lines will flash quickly for approx. 10 s,
then the measuring tool will switch off.
Open the flap for the USB Type-C® port (8). Connect the USB port to a USB power sup-
ply unit using the USB cable (15). Connect the USB power supply unit to the mains sup-
ply.
Colour of charge
indicator (7)
Yellow
Green
Red
Remove the USB cable (15) after completing the charging process. Close the flap for the
USB Type-C® port (8) to protect it from dust and splashes.
Operation with Non-Rechargeable Batteries
To switch from a lithium-ion battery pack (9) to non-rechargeable batteries, remove the
lithium-ion battery pack (9).
It is recommended that you use alkaline manganese batteries to operate the measuring
tool.
Insert the non-rechargeable batteries.
When inserting the batteries, ensure that the polarity is correct according to the illustra-
tion on the inside of the battery compartment.
Insert the battery compartment cover (12) and let it click into place.
If the non-rechargeable batteries are running low, the laser lines will flash slowly for ap-
prox. 1 min.
Bosch Power Tools
Meaning
Lithium-ion battery pack is being charged.
Lithium-ion battery pack is fully charged.
Charging voltage or charging current is unsuitable.
English | 13
1 609 92A 8C4 | (05.07.2023)