Update... Ended up running a new 7-wire cable from furnace to Nest
device where I reconnected all the wires including the additional
C-Wire. Since then no additional issues with low-battery for the last
several weeks. Still, the NEST Device was worki...
Thanks for the offer. Contacted NEST Support but unable to help
diagnose. Checked voltage (R1) from Furnace to the NEST, it was good;
furnace supplying adequate power without the C-wire but still going to
low-battery. Was thinking of replacing NEST b...
I started to receive the Low-Battery message and wifi disconnected. This
all started after the latest NEST Update happened. Seems ugly that a
NEST update would cause this issue out of the blue without addressing it