Why Does My Nest Show Low Battery. This is what to do if sparky damaged the barcode entry code lost the battery pulltab which supposedly also has barcode on it. If the thermostats battery level is low it will stop connecting to the internet.

Nest Protect can be used as a single station or multiple station alarm. If your thermostats battery level is low it will disconnect from Wi-Fi. This could be due to a wiring problem or extended power outage.
Plug the nest into laptop with a usb cable.
It can continue controlling your system if you conserve power. It indicates that the thermostat is running out of the charge and it might turn off if not charged. The low battery issue can lead to other uncommon problems with the Nest thermostat. Nest Protect can be used as a single station or multiple station alarm.
