How much does a new car battery cost?
A standard car battery fitted typically costs £70 to £130 for a small or mid-sized car. If your car has stop-start, it needs a more advanced battery, so an EFB type is usually £120 to £180 and an AGM type £150 to £250. Fitting is often included at a garage or is a small extra. Prices vary with the battery size, type and brand, so it pays to compare a couple of local garages.
A flat or failing battery is one of the most common reasons a car will not start, and it always seems to happen on a cold morning. The good news is that a replacement is one of the cheaper jobs on a car. This guide sets out the typical UK prices, explains why two batteries for similar cars can cost very different amounts, and shows how to avoid paying more than you need to.
Typical prices
For a small or mid-sized car with an ordinary battery, expect around £70 to £130 fitted. If your car has a stop-start system, which switches the engine off at junctions, it needs a more advanced battery designed for constant charging and discharging. An EFB type is usually £120 to £180, and the tougher AGM type is £150 to £250. Larger cars, performance models and some diesels take bigger batteries that cost more again. Fitting at a garage is often included or a small extra, while mobile fitting at your home adds a little for the convenience.
Why the price varies so much
Three things move the price: the size of the battery your car needs, the type of technology, and the brand. Bigger engines and cars with more electrical equipment need higher capacity batteries. Stop-start cars must have an EFB or AGM battery rather than a standard one. And, as with tyres, there is a spread from budget to premium brands, with the dearer ones generally lasting longer and holding a better warranty. Fitting the correct specification matters more than chasing the lowest price, because the wrong battery will fail early and can upset the car electronics.
Why the cheapest battery is a false economy
It is tempting to fit the cheapest battery that fits, but on a modern car that often backfires. A budget battery in the wrong specification, particularly a standard type in a stop-start car, works far harder than it was built for and can be worn out within a year or two. A correctly specified battery from a reputable brand costs a little more but usually lasts far longer and comes with a longer warranty, which works out cheaper over its life.
Fitting and registration
Swapping a battery is quick on many cars, but there is a catch on newer ones. Cars with stop-start and smart charging usually need the new battery registered to the car electronics with a diagnostic tool, so the system knows a fresh battery is fitted and charges it correctly. A garage does this as part of the job. If it is skipped, the battery can be undercharged and its life cut short, which is one reason professional fitting is worthwhile on modern cars.
Do you actually need one?
Before you buy, it is worth confirming the battery is the real problem. Slow starting, a battery warning light, dim lights or a battery that keeps going flat can all point to the battery, but they can also mean a charging fault such as a worn alternator. A garage can test both the battery and the charging system in minutes. Our guides on car battery warning signs, why a car will not start and the cost of a starter motor replacement help you tell the difference.
The bottom line
Budget £70 to £130 for a standard fitted battery, and £120 to £250 for the EFB or AGM battery a stop-start car needs. Ask for the correct specification for your car, check whether the price is fitted, and compare a couple of local garages, since the mark-up on batteries varies. You can compare garages near you, see their ratings and opening hours and send a booking request in about a minute. You pay the garage directly and there is no booking fee.
Key takeaways
- A standard fitted battery is usually £70 to £130.
- Stop-start cars need EFB or AGM batteries, which cost more.
- Fitting is often included or only a small extra at a garage.
- Size, type and brand are what move the price.
- A cheap battery in the wrong specification is a false economy.
- Comparing a couple of garages avoids paying over the odds.
Frequently asked questions
How much is a car battery in the UK?
A standard battery fitted is typically £70 to £130 for a small or mid-sized car. Stop-start cars need a more advanced battery, so expect £120 to £180 for an EFB type and £150 to £250 for an AGM type. Larger and performance cars cost more again.
Why are stop-start batteries more expensive?
Stop-start systems charge and discharge the battery far more often, so they need a tougher design. EFB and AGM batteries are built for that heavy cycling, which makes them dearer than a standard battery. Fitting the wrong, cheaper type will shorten its life and can upset the stop-start system.
Does the price include fitting?
Often, yes. Many garages include fitting in the price or add only a small charge, because swapping a battery is usually quick. Mobile fitting at your home costs a little more for the convenience. Always check whether the quoted price is fitted or supply only.
Can I fit a car battery myself?
On many older cars it is straightforward, but modern cars with stop-start often need the new battery registered to the car electronics, which requires a diagnostic tool. If in doubt, a garage will fit and register it correctly, which protects the battery life and the charging system.
How do I know if I need a new battery?
Slow or laboured starting, dashboard warnings, dim lights or a battery that keeps going flat all point to a failing battery, especially in cold weather. A garage can test the battery and the charging system quickly to confirm before you buy.