What Voltage is fully charged on Nest Thermostat

[Lnzharper123]

Our AC isn’t getting up to temp and our technician said it’s a thermostat issue and that we need to charge it. They say 3.6 V it is charging normally, but at what voltage is it fully charged without the common wire? I feel like I’ve been charging for hours and it doesn’t get past 3.7 ish volts

[SoriaD_]

Hello @Lnzharper123 

Thanks for reaching out to our Nest Community about the battery on your thermostat. I apologize for all the inconvenience. Don't worry, I'm happy to assist you with it.

We highly recommend this common cable to avoid this kind of inconvenience. The function of this wire is to always keep the battery of this device charged.

With your current situation, allow us to help you find a solution. Please Fill Out This Form to contact our specialized team. My team helps you find the solution to your situation.

Feel free to keep us posting. I'm happy to find a solution for you.

Best regards,

Douglas.