Yes , the device has a built-in powerful 3000 MaH battery.
KENT CamEye takes approximately 3-4 hours to get fully charged when it is connected to the
5V-1.5 A fast charger and micro-usb cable that comes along in the packaging box.
You can check the battery level indicator through KENT CamEye App in Devices section.
The battery level percentage (%) is indicated on the device card available on the home screen of the App.
You may also turn on low battery alert in your KENT CamEye App to get an instant notification in case battery levels in the device are low.
Path: Open KENT CamEye App>>Device>>Settings>Alerts>>Low Battery>>Turn On
If you see red LEDs consistently blinking on the device, it indicates battery level in the device is low and should be charged immediately.