Ezviz ONE Mode D'emploi page 8

Step 3
Charge ONE.
Charge ONE when it runs out of battery.
It's advised to fully charge ONE in the power-off status before you use ONE for
the first time.
It will take at most 2 hours to fully charge ONE.
The Power LED Indicator status:
Steady red when charging;
Unlit when charged.
USB Cable
7
Power Socket