Battery pack LEDs

Data link between power supply unit and battery pack

The LED on the right indicates the connection between the power supply unit and the battery pack. If it is off, there is no communication between the power supply unit and the battery pack.

The LED on the left is green when the battery pack is being charged. It goes out when the voltage drops.

Charge status of the battery pack

If the button to the left of the charge indicator is pressed in the connected state, the 10 LEDs light up according to the charge of the battery pack (red, yellow or green). After a short time the display switches off.

From hardware version 1.1 the button next to the charge indicator on the battery pack has additional functions:

• If the system is switched off or the battery is not connected to a power supply unit, the 10 LEDs light up in turn as soon as the button is pressed and held down. This indicates operational readiness of the battery pack.
• The display flashes, if the fuse in the battery pack is faulty or not inserted.
• During a firmware update 4 LEDs are lit as long as the update is in progress.