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Doorbell draining external chime battery

Community Member

I have recently installed a Nest (battery) doorbell and connected to the original external chime.  Everything works fine, but it appears as though the doorbell is now taking its power from the external chime unit as I have to replace the batteries every couple of weeks.

Whilst it is not a problem to be using the chime batteries, it seems strange that it is draining 4 x type C batteries every two weeks.

Any suggestions welcome.





I have no idea what sort of doorbell chime you have, but if you wire the battery doorbell, it is expecting to be continuously trickle-charged via a compatible transformer ( So it's probably not surprising that it would draw down the batteries in what seems to be a battery-powered chime.

I've never seen any documentation on connecting a Google Nest doorbell of any kind to a battery-powered chime.

The Google Nest Help topic below states: "If you’ve connected your Nest Doorbell (battery) to your existing doorbell wiring, the wires don’t directly power the doorbell. Instead, the battery is trickle charged by the power that comes through the wires, and the doorbell runs off the battery charge."

Community Specialist
Community Specialist

Thanks for the info, MplsCustomer.


Hey there NickHob1,

I just wanted to jump in real fast to see if you saw MplsCustomer's reply and to see if you still needed some help on this or if you were able to get it sorted out. If you are still needing some help, just let us know and we'll be happy to continue helping.


Community Specialist
Community Specialist

Hello everyone,

@NickHob1, we wanted to follow up and see if you are still in need of any help. Please let us know if you are still having any concerns or questions from here, as we would be happy to take a closer look and assist you further.

I appreciate the help, MplsCustomer and Jeff.


Community Specialist
Community Specialist

Hello there,

I just wanted to jump in here to make sure that you saw our response. Please let me know if you have any other questions or concerns as I will be locking this in 24 hours.


Thanks for the help here, everyone!