# Operation with Lithium-Ion Battery Pack

## Inserting/Replacing a Lithium-Ion Battery Pack

To switch from non-rechargeable batteries to a lithium-ion battery pack (9), remove the battery compartment cover (12) and the inserted non-rechargeable batteries.

Insert the lithium-ion battery pack (9) and let the locking mechanism (10) click into place.

To remove the lithium-ion battery pack (9), press the locking mechanism (10) and take the lithium-ion battery pack out of the measuring tool.

## Charging a Lithium-Ion Battery Pack

- For charging, use the recommended USB power supply unit or a USB power supply unit whose output voltage and minimum output current comply with the requirements in the "Technical Data" section. Observe the operating manual of the USB power supply unit. Recommended power supply unit: See "Technical Data".

- Pay attention to the mains voltage. The voltage of the power source must match the 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 between +10 °C and +35 °C. Charging outside of this temperature range can damage the battery and increase the risk of fire.

Note: Lithium-ion rechargeable batteries are supplied partially charged according to international 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 supply unit using the USB cable (15). Connect the USB power supply unit to the mains supply.

Colour of charge indicator (7) | Meaning
--- | ---
Yellow | Lithium-ion battery pack is being charged.
Green | Lithium-ion battery pack is fully charged.
Red | Charging voltage or charging current is unsuitable.

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.