If the level of battery of your Mini Cam drastically decreases, make sure that your Mini Cam is updated. First, go to the Google Play™ application and check if an update to the Archos Gateway application is available.
Once this update is done, a notification will be displayed in the application Archos Smart Home suggesting you update your Mini Cam.
You also need to keep in mind that each picture sent to your Archos Smart Home Tablet via Bluetooth® will use up its battery. Make sure to set the appropriate actions in your programs so as to not unnecesarily consume the battery.
The battery on the MiniCam is rated for between 600 and 1000 photos on a full charge.