The short answer: yes, but it depends on your thermostat's voltage, energy consumption, and the power bank's capacity. Power consumption: Smart thermostats like Nest or Ecobee typically draw 3–10 watts. I found that the Honeywell Home RCHT8612WF T5 offers all that and more in a sleek, affordable. . Traditional thermostats typically operate using battery power, making them easy to install and suitable for most households. Even high-capacity power banks (e., 30,000mAh) deliver lower voltages not suited for heaters. . Yes, a thermostat can work without batteries, provided a direct AC power connection utilizes specific wiring. By understanding alternative power solutions and recognizing signs of battery issues, you can take control of your home's temperature without relying solely on battery power.
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