The long light cable is for the AXA Pico 30 to connect to the battery/controller in order to operate the lamp via the display.
Models up to 2021 (battery with red button and without cable) can only connect such a light in this way.
Maximum light output on the battery: 500mA at 6 volts.
Manufacturer details
Manufacturer
ben-e-bike
78628 Rottweil
1
Responsible person
AMPERUM GmbH
78628 Rottweil
1

