Upon first receiving your Smart Nora (or when you see the red light on the Base or Pebble), please make sure both are fully charged before using. The green light will flash to indicate charging is taking place and will stop when each piece is fully charged.
We recommend always leaving your Base Unit on AND plugged in as it only has a 24 hour charge unplugged. Rest assured that leaving the Base Unit on at all times will not harm the unit or its battery. Regarding the Pebble, you can expect it to remain charged for up to 14 days before you will see the red light indicating that charging is in order.
Once charged, you can safely disconnect the Pebble from the USB cable until the next charging cycle is required. If you prefer to leave your Pebble connected to the USB at all times, you may do so, but this is not necessary - we only recommend leaving the base unit plugged in at all times.