Direct answer
For the Nest Hub (2nd gen), outlet/transformer, contacts, battery temperature/condition and sleep behavior should be isolated. First, use the specified power source and inspect status.
What this covers
- Nest Hub (2nd gen) (GA01331)
- Google Nest/Home device; Matter/Thread role, wired/battery power, subscription and Google Home migration vary.
- The specific fault this record addresses: has power or battery problems
What it does not cover
- ×The same symptom on a different Google Nest product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
A switched outlet or a shared circuit
What separates it The device loses power on a schedule that matches household habits, or whenever another appliance runs. Outlets controlled by a wall switch are the classic case and produce a fault that looks entirely like a device failure.
How to confirm Test the outlet with something whose behaviour you can see, and check the breaker for anything sharing the circuit.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Whether the outlet is switched, and what else shares its circuit.
Test whether the outlet is switched or shared
ReversibleAn outlet on a wall switch produces a fault indistinguishable from a device failure. Test it with something whose state you can see, and check what else is on the breaker.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- GA01331. Google Nest/Home device; Matter/Thread role, wired/battery power, subscription and Google Home migration vary.
- Display
- A 7-inch touchscreen in a 4.7 in high by 7.0 in wide enclosure.
- No camera
- This model has no camera at all — unlike the Nest Hub Max, which does. Any instruction involving video calling, camera-based gestures or a camera shutter belongs to the Max and not to this device.
- Audio
- A full-range speaker and 3 microphones.
- Sensors
- Soli, Ambient EQ and a temperature sensor. Soli is a radar sensor — it is what supports presence and gesture features without a camera, and it is also why this model can behave as though it sees you when it has no camera.
- Power
- A DC power jack and a 15W power adapter. There is no battery, so it stops with the power and returns with it.
- Connectivity
- Wi-Fi, Bluetooth and Thread. The Thread radio matters: this device can act as infrastructure for Thread accessories in the home, so removing or replacing it can take other devices offline.
- Platform
- Matter compatible, with an ARM CPU carrying a machine-learning hardware engine for on-device processing.
- Power path
- Mains adapter into a standard outlet. Switched outlets and outlets on a circuit that trips are the two failure modes that present as device faults. Use the supplied adapter — third-party adapters that supply the right voltage at the wrong current are a common cause of intermittent restarts.
- Radio
- Thread mesh, which needs an active border router to reach anything beyond the mesh. Commissioning data survives a hardware reset on several implementations, so removal from the previous fabric has to happen before the reset, not after it.
- Microphone
- Carries a microphone with a hardware mute. A muted microphone is a physical switch state that no app setting overrides, and is the first thing to check for any voice or audio symptom.
- Symptom boundary
- This record covers Google Nest Nest Hub (2nd gen) when it has power or battery problems. A different symptom on the same hardware, or this symptom on a different Google Nest product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !The battery is swollen, hot, leaking, or the housing has distorted. Stop charging it, isolate it from anything flammable, and do not puncture or compress it.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. Google Nest Help publishes this as "Google Nest speaker and display help". Official Google Nest/Home speaker and display setup, voice, media and Wi-Fi help. What that article does not carry is the model boundary — it is written for a product line, and GA01331 is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
Where is the camera on the Nest Hub (2nd Gen)?+
There isn't one. This model has no camera — the Nest Hub Max does. Instructions involving video calls, camera gestures or a physical camera shutter are written for the Max, which is the most common source of confusion between the two.
How does it detect me if it has no camera?+
Soli, a radar sensor. It supports presence and gesture features without any camera, which is a genuine privacy difference from camera-based displays and also why the device can appear to see you when it cannot.
My Thread devices went offline when I unplugged the Hub.+
That is expected and it is the most important thing to know about this device. It carries a Thread radio and can act as infrastructure for Thread accessories, so removing, moving or replacing it can take other devices offline with it. It has no battery, so a power cut does the same.
Does it have a battery?+
No. It uses a DC power jack and a 15W adapter, so it stops with the power and comes back with it. Anything depending on it — including Thread accessories — stops too.
Can I use a different power adapter?+
Use the supplied 15W adapter. A DC jack that accepts a plug is not the same as a supply that delivers the right current, and an underpowered adapter produces restarts that read exactly like a failing device.
Does it work with Matter devices?+
Yes — it is Matter compatible and carries Thread, which is the combination that lets it act as a controller and a border router for Matter-over-Thread accessories rather than only as a display.
The device keeps losing power at the same time each day.+
Check whether the outlet is controlled by a wall switch. A switched outlet produces a failure indistinguishable from a device fault, and it tracks household habits rather than anything electrical going wrong.
Is it safe to keep using a swollen battery?+
No. Stop charging it, isolate it from anything flammable, and do not puncture or compress it. Swelling, heat, leaking or a distorted housing are all stop conditions regardless of how well the device otherwise works.
Does this answer apply to every Google Nest model?+
No. It is scoped to GA01331. Google Nest/Home device; Matter/Thread role, wired/battery power, subscription and Google Home migration vary.
What should I record before troubleshooting battery or power?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing battery, power. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Stop for swelling, heat, liquid, corrosion, smoke or damaged wiring.
Answer for the exact device and software version shown above.