Your Arlo Pro battery is fully charged when it leaves the factory. You can use the
power adapter cable to plug the camera into an electrical outlet to charge the
battery. You can also use the Arlo Pro Charging Station (sold separatey) to charge
the battery. For uninterrupted Arlo Pro camera use, you can purchase a spare
battery and the charging station. Then you can put the fully charged spare battery
into the Arlo Pro camera while you recharge the battery. The charging station can
recharge two batteries simultaneously.