How long it takes to monitor automatic deletion mainly depends on the computer's hard disk capacity, the number of cameras and other factors. Generally, it will be automatically deleted between half a month and one month. If the hard disk is full, it will automatically delete the earliest videos one by one.

If automatic overwrite is not set, the monitoring software will prompt that the disk is full when the disk space is not enough to store new video files. There is no absolute value for how many days the monitoring camera data can be stored at most, which depends on the model and disk size you monitor.

Battery function of recorder

Some recorders have built-in large-capacity lithium batteries, which can realize short-term parking monitoring function without plugging in, but generally it will not last long. So, if you drive every day and don't want to get electricity from outside, you can consider this recorder.

Parking monitoring function is still useful. The lens angle of the recorder is generally between 120 ~ 170. Even if there is a rear camera, the rear camera of some recorders cannot be used for parking monitoring. Although the recorder still has many monitoring blind spots, it can be reduced as much as possible when it is used.