Car Battery Replacement

£78.78

Average price for this repair for your Mercedes in the last 30 days^

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC 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.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick for your Mercedes

Our top pick

Our top pick for your Mercedes

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.

From £149^^

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.

OEM quality parts

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.

Mechanics you can trust

Our mobile mechanics are friendly, honest, and backed by the RAC.

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.

Diagnostic check

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

Full error report and advice on repairs

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.

And it’s not just car battery replacements that we can do for your Mercedes

Mobile mechanics bring the garage to you, saving you the hassle of getting your car to a garage. If you need a service or repair, they’ll come to you at your home or work.

Try one of our RAC Approved Garages

View all garages

A1 Tyres and Exhausts

5.0/5

With over 30 years experience of automotive repairs in Coventry, A1 Tyres and Exhausts is a name that you can rely on to deliver a professional, high quality, and reliable service, that will meet all of your car needs. And above all, we are a name you can trust again and again.

Unit 12-13, Relton Mews, Coventry, CV65HE

IN'n'OUT Autocentres Wigan

4.2/5

At IN’n’OUT Autocentres we offer fixed prices MOTs and Servicing for any make and model of car with no hidden extras. We are proud to be a ‘Which? Trusted Trader’ so we are really a garage you can trust. We also have a 5 Star Trustpilot reviews rating. We provide OEM parts and 12 months warranty on all parts and servicing. We only use premium Castrol oils in all servicing. Our services are all completed ‘while-u-wait’ so you have never have the inconvenience of losing your car for the day. You can watch your car as it is being worked on through the viewing window or sit back and relax in our clean and comfortable customer lounges with FREE Wi-Fi and coffee and read the latest magazines. Check out our latest reviews and BOOK NOW!!

Robin Park Road (Near Pizza Hut), Wigan, WN50BU

T & K Motors

4.9/5

T&K Motors have been established for more than 30 years and are a helpful friendly garage, we carry out MOT’s, servicing and mechanical repairs on all makes and models of vehicles. We pride ourselves on offering main dealer quality of work, at independent prices, whilst ensuring that your warranty remains intact by using genuine or manufacturer approved parts, and are usually able to save you over 60% in price comparison. Our mechanics are fully qualified with many years of experience behind them in the motor industry, who take great pride in their work. Our services include the following; • All makes serviced to manufacturer's specification • MOT VOSA class 4 and 7 Car and Light Commercial • Air Conditioning re-charge and leak testing • Batteries/Alternators checked and replaced • Brakes pads and discs, brake fluid changes • Clutch replacement and repair • Cylinder Head repairs • Engine management light diagnostics • Exhausts repaired and replaced • Free vehicle health check • Fuel injection diagnostic/repair • Oil and filter changes • Suspension spring replacement specialists • Timing belts and water pump replacement • Tyres fitted, balanced and aligned • Van servicing and repairs • Free Vehicle diagnostic checks • Welding repairs to MOT standard • Warning lights diagnosed and reset * Car Service, Van Service, Commercial vehicle service

47-53 Green Street, Ayr, KA88BQ

MR CLUTCH

5.0/5

HIGHLY EXPERIENCED TECHNICIANS . FREE DIAGNOSTIC CHECKS , NATIONWIDE WARRANTIES , ESTABLISHED OVER 35 YEARS

11 Goulds Close, Bletchley, Milton Keynes, MK1 1EQ

Richardsons Colchester

4.8/5

Established in 1966 we are one of the South East's leading vehicle repair centres. We have a team of highly trained ATA staff and we are a BSI approved repair centre so you can ensure your vehicle is repaired correctly. We carry our vehicle servicing and repairs at very competitive prices but still follow the exact schedule recommended by the manufacturer and your warranty is NOT compromised regardless of the age of the vehicle. We also fit parking sensors, tyres, batteries, in fact we can undertake almost any of your car needs. We have alos recently been certified as a Which Trusted Trader which the company has been audited on our ability to provide customers with a honest service quality and cost standard. See for yourself by visiting www.grahamrichardsons.co.uk

Grange Way, Colchester, CO28HG

Frequently asked questions on car battery

How to charge an electric car battery

Charging your electric car battery involves:

Plugging into a charger: Use a home charger or a charging station.
Monitoring charging: Most electric cars have a display to show how charged the battery is.
Charging time: This varies depending on the charger and your electric car’s battery. Home chargers typically take six to eight hours. Fast chargers can take 30 to 60 minutes.

Always follow the guidelines for charging.

How do you change a car key battery at home?

To change your car key battery:

Open the key fob: Use a small screwdriver or coin to open the fob.
Remove the old battery: Take note of the battery type.
Insert the new battery: Make sure it’s the correct type and is oriented as it should be.
Close the key fob: Snap or screw it back together.

Check your car manual for exact instructions.

Can I replace the car battery myself?

Yes. You can replace a car battery on your own if you follow these steps:

Turn off the engine: Make sure your car is off.
Remove the old battery: Disconnectthe negative (-) terminal first. Then disconnect the positive (+) terminal. Remove any clamps or brackets holding your car’s battery in place.
Install the new battery: Place your new battery in the tray. You can then secure it with clamps or brackets. Connect the positive (+) terminal first. Then connect the negative (-) terminal.
Test the battery: Start your car to make sure the battery is working.

If you’re unsure, use a professional service.

How do I know my car battery needs replacing?

Signs you need a new car battery include:

Slow engine cranking: The engine takes longer to start.
Dim lights: Headlights and inside lights are dimmer than usual.
Battery warning light: The battery or charging system warning light is on.

If you notice any of these signs, it’s time to get your battery checked.

What is the best type of car battery for my car?

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.

Is a car battery replacement covered under warranty?

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.

Can extreme weather affect my car battery?

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.

How do you recycle an old car battery?

Recycling an old car battery is important for environmental reasons as it can be very polluting.

Take it to a recycling centre: Many auto part stores and recycling centres take old car batteries.
Check local regulations: Some areas have specific guidelines for battery disposal.
Use a professional service: Many mobile mechanics and garages offer battery recycling services.

What’s the difference between a lead-acid battery and an AGM battery?

Lead-acid battery: Common, cost-effective, and reliable for most vehicles.
AGM battery: More expensive. It offers better performance and durability, in vehicles with high electrical demands or stop-start systems.

Talk to a professional to find the best battery for your needs.