Blaupunkt BP6310C Manual page 12

Battery Tools – Battery Charge Level Lights
The battery is fitted with a charge level indicator so you can check the remaining power during use. To display the remaining charge
press the button on the side of the battery and refer to the following table.
Number of Lights Illuminated
0
1
2
3
4
Charge Remaining
0 – 10 %
10 – 25 %
25 – 50 %
50 – 75 %
75 – 100 %