The battery in the OOONO PARK NO1 typically needs to be replaced after 1-2 years. Approximately a month before the battery runs out, a battery icon with an X will show up at the bottom of the display. Simultaneously, the OOONO PARK NO1 will give a “beep” sound each time it exits parking mode. Please note that the “beep” sound might not be very loud. 🚗

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