Hello hlsu,
Congratulations on your new Nest Learning Thermostat! We appreciate you posting your inquiry here in the Google Nest Community.
It's great that you're actively monitoring the readings. Based on the information you provided, it seems like your Vin reading of 24V falls within the specified range of 29–42V, which is generally considered normal. The battery status also appears to be healthy with 3.82V.
However, it's essential to keep an eye on the system's performance over time to ensure everything continues to operate smoothly. Since you don't have a C-wire, the Nest Thermostat relies on its built-in battery and power-sharing features. If you encounter any issues or notice significant fluctuations in voltage, you might want to explore options like adding a C-wire or using a Nest Power Connector, which could provide a more stable power supply.
Overall, your setup looks good, and it's great that you're being proactive in checking the system status. If you have any specific concerns or notice any unusual behavior, give us a shout—we're always here to help!
Best regards,
Mark
