A mechanic using a diagnostic machine to inspect a car vehicle engine
Service, Repairs & MOT

Car battery replacement

We’ll come to you at home or work.

  • Top-quality batteries
  • Price includes fitting
  • Maximum convenience
Car Repairs

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Why choose RAC Mobile Mechanics for a car battery replacement?

At the RAC, we've got over 125 years' experience helping UK drivers. We have the skills and knowledge to keep your vehicle running. Plus, with RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage when you need a repair. We’ll come to you, at your home or work.

Top-quality batteries

With a minimum 3-year warranty as standard.​

Price includes fitting

Fitting included with no hidden extras.​

Maximum convenience

Get your battery replaced on your doorstep in as little as 2 days. ​

A mechanic inspecting a car battery.

Car battery replacement

From £160^^

If your car won’t start due to a dead or failing battery, our mobile mechanics can test your battery, provide a replacement, and install it on the spot at home or work, saving you the hassle of going to a garage.

We use original equipment manufacturer (OEM) standard parts, which means every new part will be the same standard and same quality as the original part it replaced.
Our mobile mechanics are friendly, honest, and backed by the RAC.
Close up of an RAC Mobile Mechanic running a vehicle diagnostic check

Vehicle diagnostic check

£99

For when you know something isn’t right, but you’re not sure what – our mobile mechanics are here to help.

We’ll look for any mechanical or electrical problems. If we need to, we’ll also check your car’s onboard engine management system. Depending on your car and issue, this will usually include: – Engine – Power steering – Brakes – Transmission – Exhaust system – Fuel injection system – Cooling system and air flow – Sensors
If we detect any issues, we'll talk through what needs to be repaired. We’ll give you a no-obligation quote to fix it on the spot, if we can. Or we’ll recommend a local RAC Approved Garage, and give you a full error report to take there.

We’ll come to you at home or work

RAC Mobile Mechanic

At the RAC, we’ve got over 125 years’ experience in offering complete peace of mind to our members. We’re best known for our breakdown service. And now – our new RAC Mobile Mechanics are here to help make every day motoring easier. If you need a service or repair, they’ll come to you at your home or work.

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What causes the car battery to need replacing?

There are plenty of reasons your car battery may need replacing. Some of the most common reasons include:

  • Age: batteries typically last three to five years. As they age, they lose their ability to hold a charge.
  • Corrosion: corrosion on battery terminals can affect an electrical connection.
  • Extreme temperatures: hot or cold weather can damage your battery.
  • Overuse: using your car’s electrical systems when the engine is off can drain the battery.

The good news is that regular maintenance helps your battery life. This means you can help delay the damaging effects of wear and tear.

A close up of an RAC mobile mechanic looking under the hood of a car

How much is a new car battery?

The cost of a new battery varies:

  • Type: standard lead-acid batteries cost £50 to £150. Premium batteries, such as AGM (Absorbent Glass Mat) batteries, can cost between £100 and £250.
  • Brand: well-known battery brands may cost you more. On the upside, they will often offer you better warranties.
  • Vehicle: batteries for luxury or electric cars may be more expensive.

It’s a good idea to check prices and warranties before buying your car a new battery.

A new battery can help reduce your chances of a breakdown. If you notice signs that your battery is failing, get it checked and replaced. RAC Mobile Mechanics and RAC Approved Garages offer services to help you with a new one.

Close up of an RAC Mobile Mechanic underneath a car

Frequently asked questions on car battery

The best car battery depends on your car and how you drive:

  • Standard lead-acid battery: Suitable for most cars with regular driving patterns.
  • AGM battery: Ideal for vehicles with high electrical demands or stop-start systems.
  • Deep cycle battery: Used in electric and hybrid vehicles.

Read your car manual or ask a professional for recommendations.

Most car warranties cover battery replacement for a period. This is usually two to three years. Extended warranties may offer you longer coverage. Check your warranty details or talk to the provider for more info.

Yes, it certainly can:

  • Cold weather: Low temperatures can decrease the battery's ability to hold a charge, making it harder to start the car.
  • Hot weather: High temperatures can cause battery fluid to evaporate, leading to potential damage.

Regular checks are important in extreme weather.

On average, your car battery lasts three to five years. Things that can affect your battery life include:

  • Driving habits: If you take a lot of short trips you may prevent your battery from fully re-charging.
  • Climate: Extreme temperatures can shorten your battery life.
  • Maintenance: Regular checks and cleaning cn help extend your battery life.

Signs that your battery is failing include slow engine cranking and dim lights. A battery warning sign on the dashboard is another.