How much does a car battery replacement cost?

Clicking noises are one of the telltale signs that your car’s battery is nearing the end of its life. You’ll need to have it replaced immediately to avoid costly repairs. If you’re wondering how much a car battery replacement costs, you’ve come to the right place. This guide covers the costs involved for this type of car service and the warning signs you should watch out for, indicating that your car battery needs a replacement.

Why replace a car battery? 

Proper installation of a new battery includes reconnecting terminals and verifying the vehicle's charging system. (Source: iStock)

A car battery is an electrical storage unit that allows the vehicle’s electrical system to operate. Systems such as the starter motor, fuel pump, and engine control unit will not run without it. It’s usually a large, box-like device full of electrolyte material and lead plates that work together to become charged whenever the vehicle and its alternator run. It connects to the car through two posts that transfer energy into the vehicle.

Like other car parts, car batteries can fail due to extreme temperatures, corrosion on terminals or cables, or a malfunctioning charging system or alternator. Mechanical issues unrelated to the battery may also drain it or put undue stress on the unit, causing it to fail prematurely. Moreover, car batteries age, and they usually last only five to seven years. 

How would you know if a car’s battery is already failing? Watch out for these warning signs: 

• The engine is slow to 'turn over' or crank. If it takes a few seconds longer than normal to start the engine, it is probably time to get a car battery replacement. 

• The 'check engine' indicator lights up. Note that some vehicles have low battery fluid indicators, and no matter what type of indicator your vehicle has, it is an irrefutable sign that you need a new battery. 

• The physical appearance of the battery indicates a problem. This might be a leak with corrosion on the posts or other build-up on the case. The case itself may look bloated, swollen or cracked.

• Apparent sulphur smell in the vehicle. This is the smell of corrosion caused by battery acid leaks

• The battery is past three years in age. This is the ideal time to have it checked in order to see if a truck or car battery replacement is needed

• Dim lights. The headlights, interior lights and other interior electronics (radio) appear too dim. 

One or more of these issues means it is time to scout out a car battery replacement service. That can mean buying the battery and paying an expert to do the installation or even entrusting them with the task of choosing the best battery and doing the work. 

How much does a car battery replacement cost in the UK?

The average prices for batteries in the UK range from £60 to £150 for the battery, but installation will be extra. Newer luxury vehicles demand batteries ranging in price from £100 to £350 and extra for installation. Usually, the job is not billed on an hourly rate, but instead, quotes are given based on the age of the vehicle, the make, model, and battery selected. The range of services built into a quote vary, as well as any warranties on labour and materials. 

Here's a breakdown of the average costs for car batteries by type of vehicle. 

What does replacing a car battery involve?Mechanics often use a battery tester to measure voltage and check battery health before replacement. (Source: iStock)

The first thing to know is that vehicles have no universal or ‘one-size-fits-all’ batteries. They are in different sizes and types and may have unique configurations and terminal placement. That is why you will want to consult with a mechanic in order to purchase the right option for your specific vehicle. Keep in mind that changing technologies and advances in vehicle design make batteries more expensive than in the past, along with creating multiple options for any specific vehicle.

You may find that your older vehicle (one over five years old) can use older batteries. However, newer vehicles with specialized electronics may demand a specific type of battery. For instance, cars that shut down when at a full stop require specialized batteries with more complex battery replacement issues. 

The process of replacing a battery generally means:

1. Obtaining the right battery for the vehicle

2. Having it installed properly in the vehicle

When done by an expert, they will:

• Safely remove the old battery by disconnecting the negative cable and the positive.
• They loosen the tie-down system and remove the battery.
• The cable ends, and all wiring is inspected and cleaned (they may need replacement if corroded)
• They will then install the replacement and restore the tie-down system. They may apply anti-corrosion compounds to terminals.
• They will use the tools to ensure it is done properly if any programming is needed.
• The vehicle starts, and the charging system’s output is compared against the original equipment manufacturer settings.

Some can offer proper recycling of the old battery as part of their fee. It is important that the charging system and the vehicle’s general operations are back to normal after installation.

What factors might affect the price of a car battery replacement?

As noted, a luxury car with battery monitoring equipment, alternators operated through the engine’s control unit or ECU and those with silver calcium can cost far more. However, they typically last longer and are less prone to damage due to temperature extremes.

Additionally, any problems discovered while testing the charging system or related components may add to the total car battery replacement service cost.

Electric car battery replacement costs in the UK also differ as compared to when you use a fuel-powered car. It will also be best to hire someone who is an expert on electric car repairs.

Find a reliable car battery replacement specialist at Airtasker

Finding a trusted mechanic is crucial to replace your car battery properly. Find a car battery specialist here at Airtasker! You only need to post a task and wait for Taskers to give you proposals. Just make sure to include this information when posting a task:

• Your budget
• Your location
• Age, make, and model of your car
• Additional services (for example, testing the alternator or charging system)
• If you require a warranty

If you’re unsure about other issues your car might have, you can always hire a mechanic first to run a thorough check. 

Have your car running smoothly again by having a pro replace it immediately with the help of Airtasker.