Power requirements for Nest cameras and Nest Hello

Nest cameras need to be plugged into a power outlet using their included cable and AC adapter.  The Nest Hello video doorbell connects directly to your doorbell’s low voltage wiring, or it can use the optional Indoor Power Adapter (available in the US only).

Because Nest cameras and Hello don’t rely on batteries, they can constantly stream video instead of only turning on after they sense motion. You also don’t need to worry about changing them or losing your video feed if they die.

Power usage and requirements

Nest cameras and Hello use a small amount of power for streaming video and sending alerts during the day. When it’s dark, your camera’s Night Vision LEDs require a little more power to evenly illuminate the scene. Even when it’s working its hardest, your camera never uses more than 7-9 watts, so you can keep it plugged in without worrying too much about the power it consumes.

  • Nest cameras plug into a standard household outlet with an adapter input of 100-240V AC, 50/60Hz and an output ranging from 5-15V DC depending on your camera model. Your camera’s power cable should be long enough to let you mount the camera where you need it.

           Learn about the cables that come with Nest cameras >

  • Nest Hello has an internal battery which other Nest cameras don’t have. Hello is powered by your household wiring and uses low voltage wires that carry 14 to 30 V AC in North America, or 10.8 and 30 V AC in Europe. Go to our article about how to check if your doorbell system is Hello compatible.  Hello can also be powered by the Indoor Power Adapter (US only) which is plugged into a standard indoor power outlet.

For more information about voltage and the power adapter included with your camera, see the following article.

           Nest camera technical specifications > 

Don't use an external battery pack 

We do not recommend or support using a USB-connected battery with your Nest camera, such as an external battery pack that charges a phone or tablet on the go. These batteries can be unreliable, and the charge will eventually run out.

If you’re concerned about power outages in your home, a plug-in Uninterruptible Power Supply (UPS) may provide temporary power during an outage. Keep in mind, Nest cameras stream video to the cloud, so you’d need to have your camera, modem and router connected to a source of uninterrupted power.

Use only the cable and power adapter that came with your Nest camera 

Aside from the Indoor Power Adapter (US only), which is made specifically for Nest Hello, third party cables and AC adapters are not recommended or supported. If your AC adapter or USB cable gets misplaced, please reach out to Nest support and request a replacement.

What happens if your camera loses power or is unplugged 

You’ll get an alert and an email if your camera is without power for more than 10 minutes. The email includes a snapshot of the last thing your camera saw.

Without power, the camera won’t be able to send any further activity alerts or stream video to the cloud. But if you have a Nest Aware subscription, you can review your video history up to the point the camera lost power.

Once power is restored, it will automatically reconnect and start streaming again, and you may start receiving alerts.