Do Stairlifts Work in a Power Cut?

A very common question people wonder is whether a stairlift will still work during a power cut.

The simple answer is yes.

Every domestic stairlift manufactured in at least the past 20 years operates using batteries. The stairlift does not run directly from mains electricity while travelling, instead it uses a very common low voltage system.

How stairlifts are powered

Most stairlifts use two 12v sealed lead acid batteries housed inside the base of the lift.

These batteries power the motor and controls while the lift is moving. The mains electricity supply is only used to recharge the batteries when the stairlift is parked on its charging point.

So even during a power cut, the stairlift continues to operate using its internal batteries.

How long will a stairlift run without power?

In a typical power outage, a stairlift should continue to work for a few days of normal use.

The exact amount of travel available depends on:

• The age and condition of the batteries
• The weight of the user
• The length of the staircase

Heavier use or older batteries will naturally reduce how long it can operate without mains power.

Why battery condition matters

Stairlift batteries should generally be replaced every 2–3 years, every second year for heavier use or when there’s two users.

Fresh batteries allow the stairlift to perform at its best, especially during a power cut. Older batteries may still work day to day, but they won’t hold charge as effectively if the mains supply is lost for an extended period.

Keeping batteries maintained ensures you get the full benefit of backup power when it’s actually needed.

Why does the stairlift beep during a power cut?

If the mains supply is interrupted, the stairlift will usually emit an audible beep.

This is simply a warning to let you know it is not receiving charge. The stairlift itself is still operational, but it’s telling you it’s not charging any more.

During a power outage, it’s recommended to switch the stairlift off using the main power button on the lift (not the key switch). This prevents unnecessary battery drain.

Should you unplug the charger during a power cut?

In some cases, especially during storms or unstable electrical supply, it may be advisable to switch off or unplug the charger / transformer connected to the stairlift track.

This can help avoid potential issues caused by power surges when electricity is restored.

Once the power supply is stable again, the charger can be switched back on and the stairlift will resume charging automatically.

If you don’t know where the plug is for the stairlift, check closely on the bottom or top part of the track to see a wire coming out, then follow it along to wherever it is plugged into. Sometimes they are connected not by plug, but wired into an isolation box (switch with the red light).

Final thoughts

Stairlifts are designed with power cuts in mind.

Because they operate on internal batteries, they will continue to work even if the mains electricity goes off. Regular battery replacement and servicing ensures they perform properly when you need them most.

Stairlifts and power cuts – FAQs

Will my stairlift stop working in a power cut?

No. Stairlifts run on internal batteries and will continue to operate during a power outage.

How long will it work without electricity?

Usually for a few days of normal use, depending on battery age and user weight.

Why is my stairlift beeping?

It is likely indicating that it is not receiving charge from the mains supply.

Should I switch it off during a power cut?

Yes. Switching it off using the main power button can help preserve battery life.

How often should stairlift batteries be replaced?

Most sealed lead acid batteries should be replaced every 2–3 years to maintain reliable performance.