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—Comparing the options

Battery or wired video doorbell

A battery doorbell goes anywhere but needs charging; a wired one never runs flat but needs a supply.

A battery video doorbell runs on its own battery and can be fitted almost anywhere without touching the wiring. The trade-off is that it needs recharging, and a flat battery means a doorbell that stops working until it is charged. A wired doorbell draws its power from the existing doorbell wiring or a transformer and never runs flat.

Comparison guides weigh two electrical options against each other and note where each one fits best.

The electrical side decides it. If the existing doorbell wiring is sound, a wired unit is usually the more reliable choice. If there is no wiring, or running one is difficult, a battery unit avoids that work at the cost of keeping it charged.

01In short

The points that matter most

  • Charging or not

    Battery units need recharging; wired units run continuously.

  • Where it can go

    A battery unit fits almost anywhere; a wired unit follows the existing wiring.

  • Reliability

    A wired unit never runs flat; a battery unit stops when it is not charged.

02Detail

What each option involves

  • Battery unit

    Fitted to the door frame, running on a rechargeable battery.

  • Wired unit

    Connected to the existing doorbell wiring or a transformer, with no battery to charge.

  • Power and transformer

    A wired unit needs a compatible transformer; a battery unit does not.

03Checklist

Before choosing

  • Check the existing bell

    Whether the old doorbell wiring and transformer are present and sound.

  • Think about charging

    How often a battery unit would need charging in your household.

  • Decide the position

    Where the button goes and how the wiring, if any, reaches it.

—In practice

Putting it into practice

Decide from the existing doorbell wiring and how reliable the bell has to be. If the old wiring and transformer are sound, a wired unit never runs flat; if there is no wiring, a battery unit avoids that work but needs charging. Check the transformer matches a wired unit before it is fitted.

Common mistakes

Ignoring the old transformer
A wired video doorbell needs a compatible transformer, and the old one is often too small. Check it before fitting.
Forgetting to charge
A battery doorbell that is never charged stops exactly when it is needed. Choose wired if the bell must always work.

04Questions

Questions people ask

Is a wired doorbell more reliable?
Usually, because it never runs flat. A battery unit stops working until it is recharged, which people forget until it is needed.
Can I replace a wired doorbell with a battery one?
Yes, and it avoids touching the old wiring. The old supply should still be dealt with safely if it is left in the wall.
Does a wired video doorbell need a transformer?
Yes, and it has to match the unit. The existing doorbell transformer is often the thing that needs upgrading.

05Related

Related guides

This guide sits under installation. All topics are on the guides page.

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