Yes, KENT CamEye comes with a built-in powerful battery of 3000mAh.
It takes approximately 3-4 hours to get fully charged, once it is connected to the 5V-1.5A fast charger through a micro-USB cable. The charger and the USB cable comes along in the packaging box with the device.
To check the battery level indicator, you can go to the Device section in KENT CamEye mobile app. The battery level percentage (%) is indicated there on the device card available over the home screen of the App.
Moreover, you can also set an alert for low battery in the KENT CamEye App. It will send an instant notification whenever the battery level of the device will run low.
Path: Open KENT CamEye App>>Device>>Settings>Alerts>>Low Battery>>Turn On
While being into the car, if you see the red LED consistently blinking on the device, it indicates that the battery level in the device is low and should be immediately charged.