topic Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime? in Cameras and Doorbells

Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

kiwi_pete — Mon, 03 Feb 2025 09:20:05 GMT

Can anyone solve the mystery of how I install a Nest Doorbell Gen 2 (battery) with wired power and a wired chime?

I have already installed the doorbell via a 24v transformer and it works fine, however, I can not find any documentation on how to connect it to a wired chime.

I do not want to remove the doorbell to charge it hence it is wired directly.

The instructions clearly state a chime connector is not needed.

I do not wish to use a google mini.

Please help!

My best conclusion so far is that a chime connector IS needed. I would really appreciate it if someone could clarify.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

MplsCustomer — Mon, 03 Feb 2025 17:58:46 GMT

@kiwi_pete

This is what Google Nest says:

"The Nest Doorbell (battery) doesn't need the chime connector for wired or battery-powered installation."

https://support.google.com/googlenest/answer/9247132

So you would just connect your battery doorbell to your two doorbell wires:

https://support.google.com/googlenest/answer/10732535

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

kiwi_pete — Tue, 04 Feb 2025 09:43:15 GMT

Hi, thank you but that does not answer the question.

Are you suggesting this?

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

MplsCustomer — Tue, 04 Feb 2025 13:18:15 GMT

@kiwi_pete

The transformer has to power the chime.

I would think you would wire it the same as the standard doorbell in the "One Nest doorbell, one standard doorbell, one chime" diagram shown here:

https://support.google.com/googlenest/answer/12153643

The battery doorbell is wired in the same way as a conventional doorbell would be wired.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

kiwi_pete — Wed, 05 Feb 2025 08:19:15 GMT

Thank you. If you look at my diagram you will see that the transformer is powering the chime. My concern is that it's powering the chime all the time.

The "One Nest doorbell..." diagram shows a Chime Connector. As previously stated this is not needed for my model of doorbell, apparently.

My question from that diagram is: does the doorbell remain powered (essentially, on charge) at all times in that configuration? I do not want to remove the doorbell to charge it.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

MplsCustomer — Wed, 05 Feb 2025 15:52:51 GMT

@kiwi_pete

Google Nest does not seem to document exactly HOW the battery doorbell gets trickle-charged when it is wired; their wired installation Help topic only shows it being wired to a customer's existing two doorbell wires:

https://support.google.com/googlenest/answer/10732535

So that would be the same wiring shown for the "Doorbell button" in the "One Nest doorbell, one standard doorbell, one chime" diagram in the link I provided earlier above. And it would be the same wiring as shown in the diagram below for a standard doorbell button.

Standard doorbell wiring

Your diagram, with both wires from the doorbell feeding through the posts on the doorbell, would provide continuous power to your chime, which would cause it to buzz or chime continuously.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

kiwi_pete — Thu, 06 Feb 2025 12:15:25 GMT

My conclusion, therefore, is that it is not possible to use a nest doorbell gen 2 (battery) in a wired configuration with a traditional chime. Therefore I have wasted both my time and money on this. Super frustrating and not what I’d expect from Google.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

MplsCustomer — Thu, 06 Feb 2025 15:25:01 GMT

@kiwi_pete

I don't know why you're concluding that.

You connect the 2nd gen Google Nest battery doorbell in the same way you would connect a standard button doorbell, without a chime connector. If you connect it that way, it should trickle-charge.

Replace standard doorbell with battery doorbell

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

kiwi_pete — Fri, 07 Feb 2025 10:59:27 GMT

Should or will? It looks to me like there will be no power going to the doorbell unless the button is pressed. I'll give it a try.

Re: Wiring diagram for Nest doorbell gen 2 (battery) - how to connect a chime?

MplsCustomer — Fri, 07 Feb 2025 14:39:37 GMT

@kiwi_pete

I said "should" instead of "will" because I keep seeing posts in this forum from customers reporting issues keeping their battery doorbell charged (and because in cold weather the battery won't charge: https://support.google.com/googlenest/answer/11830989).

When wired as Google Nest recommends, you will have two wires going to your doorbell. When you press the doorbell button, the circuit is closed and current flows to your chime to ring it, and when the button is not pressed, the circuitry in the doorbell allows current to flow through and trickle-charge the battery. I have no real idea how this is done, and I don't know why the battery doorbell does not require the chime connector used in both the 1st and 2nd gen Google Nest wired doorbells.

Two of our 1st gen Google Nest Hello Doorbells are wired as shown in the diagram here: https://www.googlenestcommunity.com/t5/Cameras-and-Doorbells/Two-Nest-Wired-Doorbells/m-p/244263, with two wires going to each doorbell. The third is on an entrance that did not have a doorbell, so it is wired with two wires going directly to an Ohmkat Video Doorbell Power Supply (https://www.ohmkat.com/products/ohmkat-video-doorbell-power-supply-compatible-with-nest-hello-no-existing-wiring-required-transformer-adapter-power-kit-supply-all-in-one?srsltid=AfmBOoociQgvpjwmvwzZ6bU7m7uWT8t61w_jDwfZsqUbnnEi3sGOozmj).