Trying to find the right battery for your car? Here’s what you need to know before you buy.
Finding a replacement car battery can seem surprisingly complicated, particularly if you’re not familiar with batteries.
You might know you have a Mazda CX-5, Toyota RAV4 or Ford Ranger, but that doesn’t necessarily tell you exactly which battery your vehicle needs. Different versions of the same model can require different batteries depending on the year, engine, vehicle specification and Stop/Start system.
The good news is that you don’t need to be a battery expert.
Our Battery Warehouse team knows batteries inside and out. Identifying the right battery for a vehicle is something they do every day, so for them, matching a vehicle to the right battery is usually straightforward.
This guide explains both sides of the process: what our battery specialists need to identify the right battery for you, and what you can check yourself if you’re buying a battery independently.
Looking for information about battery types, CCA, reserve capacity and other things to consider when buying a battery? Our Car Battery Buying Guide covers those topics in more detail. This guide is specifically about identifying the battery that’s right for your particular vehicle.
The Easiest Way to Find the Right Battery
If you’re buying your battery from Battery Warehouse, you don’t need to arrive with a long list of battery specifications.
Simply tell us your vehicle’s number plate, make, model and year or what it says on top of the battery, and we’ll take it from there.
Our experienced battery specialists can use this information to identify the likely battery requirements for your vehicle and help match you with the right battery.
Depending on the vehicle, they may ask a couple of additional questions to confirm the fitment. If there’s any doubt, they can also use information from the existing battery to make sure the replacement is correct.
That’s the benefit of dealing with people who know batteries. You don’t need to work it all out yourself.
Buying a battery yourself?
If you’re choosing a battery without the help of a battery specialist, you’ll want to check more information to be confident you’ve selected the correct one.
Useful details include:
- Make – Mazda, Toyota, Ford, Mitsubishi, etc.
- Model – CX-5, Corolla, Ranger, RAV4, etc.
- Year
- Engine size and type
- Whether the vehicle has Stop/Start
- The battery currently fitted
- The number or code printed on the battery
- Battery dimensions
- Terminal position and configuration
- Battery technology, such as conventional, EFB or AGM
You don’t necessarily need to know what all these things mean. They’re simply useful checks if you’re trying to identify the battery yourself.
Why Your Car Model Isn’t Always Enough
One of the most common mistakes people make when buying a car battery is assuming that every version of a particular model uses the same battery.
For example:
“I need a battery for my Mazda CX-5.”
That’s a great starting point.
But a CX-5 from one year or specification may use a different battery from another. The same can apply to popular vehicles such as the Toyota Corolla, Ford Ranger, Mitsubishi Outlander and Mazda CX-3.
A battery specialist can usually narrow this down quickly from your vehicle details.
If you’re trying to identify the battery yourself, however, you’ll need to do a little more checking.
Your make, model and year are the starting point. The existing battery and vehicle specifications can then help confirm the correct fitment.
If You’re Identifying the Battery Yourself
If you’re comfortable checking your own vehicle, the following steps will help you work out what battery you need.
Step 1: Find Your Car’s Make, Model and Year
Start with the basics.
You’ll usually know the make and model of your car, but check the exact year as well.
For example:
Mazda CX-5 – 2019
is much more useful than simply:
Mazda CX-5
The year can help narrow down the possible battery requirements.
If you’re not sure of the year, check your vehicle registration information or other vehicle documentation.
Step 2: Check the Engine
The engine is another important detail when identifying a battery.
Different engines can have different starting and electrical requirements, so a petrol and diesel version of the same vehicle may use different batteries.
If you’re working it out yourself, check your engine size and type before ordering.
If you don’t know this information, don’t worry. Our team can help identify the correct battery from the vehicle information available to them.
Step 3: Does Your Car Have Stop/Start?
Stop/Start technology is important because vehicles with this feature can have different battery requirements from conventional vehicles.
If your engine switches itself off when you’re stopped and then automatically restarts when you move away, your vehicle has Stop/Start.
You may also notice:
- An A symbol or Stop/Start symbol on the dashboard
- A Stop/Start button or setting
- The engine switching off when you stop
- The engine restarting automatically when you release the brake or operate the clutch
Vehicles with Stop/Start may use battery technologies such as EFB or AGM.
For more information about these battery technologies, see our Car Battery Buying Guide.
Not sure whether your vehicle has Stop/Start? That’s something our team can help you establish.
Step 4: Look at the Battery Already in Your Car
If you’re identifying the battery yourself, the battery already fitted to your vehicle can provide some of the most useful information.
Open the bonnet and look for the battery label.
You may see:
- A battery model number
- A battery size code
- CCA
- Ah
- EFB or AGM
- Brand information
- Other numbers and letters
You don’t need to understand all of these.
If you’re unsure what you’re looking at, take a clear photo of the battery.
Step 5: Find the Battery Number or Code
Look for a combination of letters and numbers on the battery label.
You might see something such as:
55D23L
or
DIN55
or another battery size or model designation.
These codes can help identify the battery’s physical and electrical specifications.
Take a photo before removing the battery
If you’re replacing the battery yourself, take a photo while the old battery is still installed.
Try to capture:
- The whole battery
- The main label
- Any numbers or codes
- The terminals
- How the battery sits in the tray
A clear photo can make identifying a replacement much easier.
Step 6: Check the Battery Size
If you’re choosing the replacement yourself, you’ll need to make sure the battery physically fits your vehicle.
Check:
- Length
- Width
- Height
- Battery tray
- Hold-down or clamping arrangement
Don’t assume that a battery that looks similar will fit.
It needs to fit the battery compartment correctly and be securely held in place.
Step 7: Check the Terminal Position
The positive and negative terminals need to be correctly positioned for your vehicle.
Two batteries can look very similar but have different terminal configurations.
If you’re checking the battery yourself, compare:
- Positive terminal position
- Negative terminal position
- Terminal type
- Terminal size
- Overall orientation
The vehicle’s cables need to reach the correct terminals and connect properly.
A photo of the existing battery can be particularly helpful here.
Step 8: Check the Battery Technology
If you’re identifying the battery yourself, check whether the existing battery is:
- Conventional/lead-acid
- EFB
- AGM
- Another specialised battery type
This is particularly important for modern vehicles with Stop/Start systems and higher electrical demands.
Don’t automatically choose a cheaper battery simply because it physically fits.
The replacement needs to be appropriate for the vehicle.
For a more detailed explanation of battery technologies and how they compare, see our Car Battery Buying Guide.
What If You’re Still Not Sure?
Sometimes you can have all the information you need and still not feel confident you’ve found the right battery. That’s completely understandable if you’re not familiar with batteries.
Here are some of the situations we commonly help customers with.
I Don’t Know What Battery I Have
That’s incredibly common.
If you’re identifying the battery yourself, look for the label on the battery and see whether you can find a model number, size code or other identifying information.
You don’t need to understand what the numbers mean.
Take a clear photo of the battery label and the battery itself. This can provide useful information when you’re trying to identify a replacement.
And if you’re buying from Battery Warehouse, you don’t need to work it out yourself. Give us your vehicle details and our experienced team can help identify the right battery.
Can I Identify My Battery From a Photo?
Often, a photo can be extremely helpful.
If you’re asking for help identifying a battery, try to photograph:
- The whole battery
- The main label
- Any numbers or codes
- The terminals
- How the battery sits in the vehicle
A clear photo gives a battery specialist useful information about what is currently fitted.
If you’re not sure what you’re looking at, that’s okay. Send us the photo and we’ll help you make sense of it.
What If My Battery Has Already Been Removed?
If you’ve already removed the old battery, don’t panic.
If possible, keep it until you’ve confirmed the replacement.
Take photos of:
- The battery label
- Any numbers and codes
- The terminals
- The battery tray
- The hold-down arrangement
Also make a note of your vehicle’s:
Make + model + year
If you know the engine, include that too.
If you’re unsure what all the information means, that’s where our team can help.
Can I Use a Battery From Another Car?
Be careful with this.
A battery that fits one vehicle isn’t automatically suitable for another, even if the vehicles look similar or the battery physically fits.
The battery needs to be suitable for the vehicle’s electrical and starting requirements as well as its physical fitment.
This is particularly important with modern vehicles, where battery technology and electrical requirements can differ significantly.
“It fits” and “it’s the right battery” aren’t necessarily the same thing.
What If I Want to Buy the Battery Myself?
Absolutely — you can.
If you’re confident identifying your own battery, use the information in this guide to check the vehicle and existing battery carefully before ordering.
The most important thing is not to rely on just one piece of information.
Check the vehicle details alongside the existing battery, including its size, terminals and battery technology.
If you’re unsure at any point, there’s no advantage in guessing. Ask an expert before you buy.
When Should I Ask an Expert?
You don’t need to be an expert to replace your car battery.
If you’re unsure about the battery number, can’t tell which terminal configuration you have, don’t know whether your vehicle has Stop/Start, or simply don’t feel confident you’ve found the right battery, ask for help.
That’s exactly what our Battery Warehouse team is here for.
Our specialists work with batteries every day. What may look confusing to someone unfamiliar with batteries is often very straightforward to them.
Simply provide your vehicle details and they’ll help you identify the right battery.
The Easiest Way to Get Help
Sometimes the simplest solution is to show us what you’ve got.
If you’re unsure which battery your car needs, use our Find the Right Battery tool.
You can upload a photo of your existing battery, enter the battery number or provide your measurements.
Or simply contact the Battery Warehouse team with your vehicle details.
You don’t have to know batteries. You just need to know who does.
Don’t Guess — Get the Right Battery
Finding the right battery doesn’t have to be complicated.
If you’re identifying the battery yourself, checking your vehicle details and existing battery can help you make sure you’ve got the right fitment.
But if you’d rather have an expert take care of it, that’s what we’re here for.
At Battery Warehouse, our team works with batteries every day. Their experience means they can quickly identify the right battery for your vehicle without you having to work through a long list of specifications yourself.
Whether you’re replacing the battery in a Mazda CX-5, Toyota Corolla, Ford Ranger, Mitsubishi Outlander or something a little less common, we’re happy to help.
You don’t need to be a battery expert. That’s our job.
Find Your Car Battery at Battery Warehouse
Once you’ve identified the battery your vehicle needs, browse our range of Car Batteries
online or contact our team for help.
With Battery Warehouse depots around New Zealand, nationwide delivery and experienced battery specialists, we’re here to make finding and replacing your car battery as easy as possible.
Battery Warehouse — real people, real battery expertise.
