Best Battery Powered Smart Thermostat

ecobee3 Lite Smart Thermostat - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - DIY Install, Black

Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Snow

Google Nest Learning Thermostat - Programmable Smart Thermostat for Home - 3rd Generation- Works with Alexa - White

Google Nest Learning Thermostat (4th Gen) with Nest Temperature Sensor (2nd Gen) - Energy Saving Smart Thermostat with Adaptive Eco - Works with Alexa and Google Home App - Polished Silver

Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required

ecobee New Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home

Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625" x 3.4" x 1.17"

Honeywell TH9320WF5003 Wi-Fi 9000 Color Touch Screen Programmable Thermostat, 3.5 x 4.5 Inch, White, 'Requires C Wire"

Honeywell Home T9 WIFI Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and Google Assist

Nest Thermostat E Programmable Smart Thermostat for Home, App Controlled via Wifi, Programmable, Compatible with Alexa and Google Assistant, Frosted White Color (T4002ES)