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

Car battery replacement in Plymouth

Book an RAC Mobile Mechanic and we’ll come to you at home or work

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

£241.72

Average price for this repair in Plymouth in the last 30 days^

Trustpilot rating for all RAC Mobile Mechanics.

Why choose the RAC for a car battery replacement?

With RAC Mobile Mechanics, you can avoid the hassle of taking your vehicle to a garage. They can do battery replacement and fitting on your driveway, so you don't even need to leave the house.

We use only quality batteries that meet OEM standards – that means they meet your vehicle manufacturer’s strict quality criteria, with a minimum 3-year warranty as standard. The price includes fitting, ensuring no surprises on the day. No hidden costs, just friendly, honest experts.

Close up of an RAC Mobile Mechanic underneath a car

Our top pick in Plymouth

We’ll come to you at home or work

RAC Mobile Mechanic in Plymouth

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.

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

We’ll spend up to 30 mins checking our car’s onboard management system for faults. We’ll talk you through repairs needed and provide a full report. If any further work is needed, we’ll agree this with you before we start. Any additional work after the first 30 minutes will be priced at £20 per 15 minutes. We’ll agree this with you before proceeding.

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.

Average cost of a car battery replacement by car make^

The cost to replace your car battery will depend on the car you drive and battery recommended. According to RAC data, the average cost to replace a car battery is £214. But you can check out the average price of a car battery replacement for your specific car make here.

Make

Average price

Ford

£230

BMW

£286

Volkswagen

£230

Mercedes

£258

Nissan

£224

Toyota

£234

Audi

£270

Vauxhall

£226

Peugeot

£235

Land Rover

£266

^Average price quoted for RAC Mobile Mechanics from 01/01/25 to 31/03/25.

And it’s not just car battery replacements that we do in Plymouth

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.

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

What our expert says

A healthy battery will help you avoid breakdowns and keep your car in top condition. An old worn battery can cause starting issues and could fail any time – leaving you stranded.

Nick Mullender

Lead RAC Mobile Mechanic

Try one of our RAC Approved Garages

RB Motors

4.1/5

RB Motors are a repair and service garage located in Holsworthy Devon and Bude Cornwall. We pride ourselves on doing a great job that is quick easy and efficient. We offer same day collection of your vehicle and instant quotes, give us a call for any further information.
Tyr Cars, Atlantic High Way, Bude, EX239JY

W G Friend & Son Ltd

4.0/5

W G Friend & Son Ltd
Units 8-10 Stowford Business Park, Ivybridge, Plymouth, PL21 0BE

Roundabout & Moxham Garage

3.9/5

We are a well known independent garage situated in the heart of Yelverton. We are extremely easy to find and have many amenities local to us. RAC trading standards approved. FREE COURTESY CAR AVAILABLE !!
Moorland Villas, Yelverton, PL206DT

TyreMarks of Tavistock

3.7/5

At TyreMarks our aim is to be at the forefront and to lead the way to offer the best service and results in vehicle mechanical, electrical and diagnostic repair solutions. We run the very latest in diagnostic, ECU and emissions control equipment for just about any vehicle and manufacturer. This also includes many manufacture's own specific tools and software for Ford, BMW, VW, Audi, Seat, Skoda & Bentley, Vauxhall, Peugeot & Citroen. Our new premises in Westbridge Industrial Estate, Tavistock have given us exactly what we needed to become what we are today, with easy access and customer parking spaces at the front of the building, along with a massive parking area at the rear. A superb customer reception and waiting area, all fully compliant with disabled specifications including our toilets and a children's play area, a TV, Free WiFi and even a Free Coffee machine. Our new premises have given us the room to expand, not only our general mechanical services but also expand our specialist services even further, running 6 mechanical ramps (5 of which are rated to lift over 4 ton), a fully floating wheel free ramp to be able to offer a full 4 wheel alignment set up. Also we have 3 tyre fitting bays along with a separate room for our Stainless Steel Custom Exhaust fabrication for Powerflow, a specialist ECU repair and tuning room where we can actually open your ECU to update, repair damage, copy and clone, even clean up internal corrosion and water damage in our ultrasonic tank. We use the best products for your vehicle and we are a dealer for many leading manufactures including MICHELIN Tyres, BREMBO Brakes, SHELL Lubricants - that's correct we use Shell Oil as our standard workshop motor oil. Not many garages can say that. We are an RAC Approved Garage which shows the quality of our work and the parts we use. With the ever increasing issues with vehicle electronics, emissions and dash warning lights we have invested heavily in the latest equipment for repair, engine management, ABS, airbag, body control, TPMS (Tyre Pressure Management System) and emissions control systems, such as DPF's and EGR Valves. Our Hydroflow Carbon Cleaning Treatment along with our Off Vehicle DPF Cleaning machine run alongside our ever-increasing range of diagnostic tools and manufacture specific back up to help us stay at the forefront of our game. Our outstanding HYDROFLOW Engine Decarbonising Machine is amazing people with its results, whether its general maintenance or rectifying an array of faults including engine management faults, cleaning blocked DPF's and EGR valves. This helps to increase your MPG, reduce smoking exhausts, remove lumpy running and reduce high exhaust emissions, reducing flat spots, cleaning out sticking turbo's to name just a few. Our Hydroflow treatment has proven time and time again to improve all of these issues. With the new MOT regulations, a vehicle suffering from these issues can often make the difference between a pass or fail. We are a Powerflow Centre of Excellence and so can build you a full customised Stainless Steel Exhaust system from scratch. Whether you require a high performance system with a 200 Cell sports Catalytic Convertor, a standard replacement system or just a flexy section replacement, we can offer it. We fully tig weld every system in house for any car, van, tractor or even a generator and all our work comes with a Lifetime Guarantee. Just pop in and check out our new premises on Westbridge Industrial Estate, Pixon Lane, Tavistock to see what we can do for you.
Unit 5 Westbridge Ind Est, Tavistock, PL198DE

Mallock Road Garage

3.0/5

We are a local garage, servicing our local communtiy.
1A Mallock Road, Chelston, Torquay, TQ26AF

Frequently asked questions on 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.

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.

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: Disconnect the 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.

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.

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.

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.
  • 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.