Your Google Nest thermostat E’s Heat Link has two batteries that need to be replaced when they get low. When your Heat Link has a low battery, one of the following messages will appear in the Nest app:
- 'Replace your Heat Link battery soon. It's getting low.'
- 'Replace your Heat Link battery. It's very low.'
Important: Use only AA Energizer Lithium L91 batteries with the Nest Heat Link. Don’t use rechargeable or alkaline batteries. If you do, they will quickly drain and will need to be replaced soon after installing them.
To replace the batteries:
- Pull off the Heat Link’s fabric cover.
- Use the battery pull tab to release the batteries.
- Replace the batteries with new ones.
- Push the cover back on.