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Battery runs out, even when connected to the old buzzer cable

Community Member

Battery runs out, even when connected to the old buzzer cable. 

I have tried to use my doorbell on battery only - it was supposed to last 6 months, but apparently I have over 200 people pass by my gate each day. The battery runs out in 4 days.

I had to connect my old buzzer low voltage cable, but even when it is connected the battery runs out, in about 10 days. It charges the battery so slow! 

Is there anything I can do about it? 

Can I increase the voltage to speed up the charging? I think it is connected to a 12 volts transformer... 




Maybe your transformer needs to be upgraded. Many customers in this forum, including us, have upgraded to 16V 30 VA transformers to get our 1st gen and 2nd gen Google Nest doorbells to work. I don't know if that will help with your battery doorbell.  We have 1st gen Nest Hello Doorbells; I've seen too many negative comments about the battery doorbell in this forum.

These are Google Nest's recommendations:

Community Specialist
Community Specialist

Hi folks,


Thanks for chiming in, @MplsCustomer


@Tb_music, if you're experiencing rapid battery drain on your doorbell, even when connected to the old buzzer cable, there are a few potential causes and solutions to consider:


  1. The old buzzer low voltage cable may not provide enough power to keep the doorbell battery charged adequately. Doorbells typically require a specific voltage and current to operate and charge the battery effectively. Connecting it to a 12-volt transformer, if that is the correct voltage for your doorbell, should provide sufficient power. However, if the voltage is too low or there are wiring issues, it may not charge the battery efficiently. Ensure that the wiring is correctly connected and that the transformer is providing the appropriate voltage.
  2. Check the wiring connections between the doorbell and the transformer. Ensure that all connections are secure and properly connected. Loose or faulty wiring can result in reduced power transfer and slow charging.
  3. Confirm that the 12-volt transformer you are using is compatible with your specific doorbell model. Some doorbells may require a specific type or rating of transformer to function optimally. Refer to the doorbell's user manual or contact the manufacturer to verify the recommended transformer specifications.
  4. Check the doorbell's settings to ensure that power-saving features, such as motion detection sensitivity or video quality, are appropriately configured. Adjusting these settings can help optimize battery life.


Let us know if that helps.