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HomeGuidesVideo doorbells

Video doorbells, and the wiring question underneath

Wired or battery decides almost everything that follows, including how fast it wakes and what it can record.

Wired or battery is not a detail. It decides how fast the thing wakes, how much it records, and whether you are ever charging it.

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  • Reviewed August 2026

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Wired or battery decides almost everything else.

A wired doorbell draws from the low-voltage circuit your existing bell already uses. It never needs charging, wakes instantly, and can record without gaps.

Wired or battery

A battery doorbell goes anywhere, mounts in minutes, and sleeps between events, which is why it sometimes misses the first second of one. It also wants taking down to charge, several times a year.

Establish which you can have before you look at anything else. Nearly every complaint about doorbells traces back to this choice being made by accident.

In detail

Working out what your door already has

Most homes fall into one of four situations. Tap whichever matches yours.

The rest of the house

Which describes your front door?

What that means appears underneath

General guidance on what to establish. Any electrical work belongs with a qualified electrician.

Worth knowing

Where the two kinds genuinely differ

Not marketing distinctions: things you notice in the first fortnight.

Where the alert arrives

Waking up

A battery doorbell sleeps to preserve its cells and wakes when its motion sensor fires. That wake takes a moment, and the moment is why footage sometimes begins with somebody already at the door rather than approaching it. A wired unit is always awake, so it catches the approach.

The indoor chime

This is the detail people miss. A wired doorbell usually keeps your existing chime working, so the house still hears the bell whether or not anyone is holding a phone. A battery one generally does not; the alert goes to a handset, and if nobody is looking at one, nobody knows.

Several manufacturers sell a plug-in chime to solve exactly this. Worth budgeting for rather than discovering later.

Cold weather

Batteries lose capacity as temperature drops. A doorbell that runs three months in summer may want charging every six weeks in a hard winter, and that is a ladder in the cold.

One thing worth knowing. A doorbell transformer is low voltage, but it sits on mains wiring somewhere. If the existing bell has stopped working, or the wiring is unfamiliar, that is a job for a qualified electrician: not a weekend project, and not something this page can walk you through.

Practical

What happens to what it records

The recording model varies more between manufacturers than the hardware does.

Signal at the front door

Some doorbells keep clips on a card inside the unit. Some send everything to the manufacturer's servers and charge a monthly fee to keep it. Some do both, and a few will only show you a live view unless you subscribe.

  • On-device storage costs nothing after purchase, survives an internet outage, and is lost if the unit is stolen, which, at a front door, is not hypothetical.
  • Cloud storage survives theft and scales, but stops the day you stop paying, and typically keeps clips for a fixed window rather than indefinitely.
  • Live view only is worth checking for specifically. A doorbell that shows you the door but records nothing is a different product from the one most people think they are buying.

Worth asking before purchase: what does this do if the internet drops, and what does it do if I stop paying? The answers are rarely on the box.

Before you buy

Questions about video doorbells

Tap a question to read the answer.

Chimes and displays
+Will it work with my existing chime?Read this oneClose it againTap to read the answer

A wired doorbell usually will, because it is designed to sit on the same circuit the chime already uses. Some older mechanical chimes need a small component fitted alongside. Manufacturers supply it, and their documentation says when it is needed.

A battery doorbell almost certainly will not. The alert goes to a handset instead, and a separate plug-in chime is the usual answer.

+How long does a battery actually last?Read this oneClose it againTap to read the answer

Manufacturers quote three to six months. Real figures depend almost entirely on how busy the door is and how cold it gets. A quiet door in a mild climate can go a long time; a doorbell facing a pavement, waking at every passer-by, can want charging monthly.

Narrowing the motion zone so it watches the path rather than the street makes more difference than any other setting.

+Can it see who is at the door when the internet is down?Read this oneClose it againTap to read the answer

Generally not. Most doorbells route even a local live view through the manufacturer's servers, so an internet outage takes the whole thing offline — including, on many models, the ability to record.

A wired doorbell that keeps your original chime working at least means the bell still rings.

+Does a doorbell need its own Wi-Fi arrangements?Read this oneClose it againTap to read the answer

It needs a signal at the front door, which is often the weakest point in a house — an exterior wall, and usually the furthest room from the router. This is the single most common cause of stuttering footage.

The fix is almost always a mesh unit nearer the door rather than any change of setting. Our protocols guide covers why.

Keep reading

Cameras cover the rest of the house

A doorbell watches one door. The camera guide covers everywhere else, and where footage actually lives.

Read the camera guide

How we checked this

Where this comes from

  • The literature each manufacturer issues for its own equipment, which is where intended behaviour is set down
  • What Apple and Google publish for people building software, since that is where handset permissions and radio handling are described
  • The wireless specifications themselves, which govern how each band and every low-power protocol actually conducts itself
  • Opening the applications and observing them in whatever state they are in today, with every check dated

Nothing stated here rests on a forum thread or an article with no name attached to it. Where a point simply cannot be pinned down, the page admits as much instead of papering over it.

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Written reference material about connected household equipment, published independently by DIGITALDOTS TECHNOLOGIES of Ontario, Canada.

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