Oh no! You’ve gone to start your 2015 Corolla only to find that nothing happens when you turn the key (or press the “push-to-start” button). If your battery is more than a few years old, you’re probably dealing with a dead battery.
What’s the best replacement battery for the 2015 Toyota Corolla?
The best battery for a 2015 Corolla is a 12-volt OEM flooded SLI battery with a group size of 35 and a minimum cold-cranking amps (CCA) rating of 355. An aftermarket battery with the same specifications may also be suitable.
Replacing the battery on your 2015 Toyota Corolla is relatively inexpensive and simple. However, finding the right replacement can be easier said than done. Let us help walk you through it.
What is a Battery Group Size and Which One Fits the 2015 Corolla?
Car batteries come in many different sizes and configurations. You’ll want to make sure that the replacement battery you buy for your 2015 Corolla will fit properly and have the right terminal locations.
This is where knowing your car’s recommended battery group size comes in handy. This term simply refers to the overall dimensions, terminal locations, and other general specifications required for your vehicle.
The Battery Council International (BCI) assigns numbers and letters to correspond to different battery group sizes. In the case of the 2015 Corolla, you’ll need a replacement battery with a 35 group size.
This means its dimensions measure roughly 9 1/16″ long, 6 7/8″ wide, and 8 7/8″ in height. This is a very common group size for car batteries and is widely used among the Toyota brand.
Which Battery Type and Specs are Best for the 2015 Corolla?
In addition to buying the right sized battery for your car, you’ll also need to make sure you’re purchasing the right type of replacement battery.
There are many different types of car batteries on the market, ranging from standard starting, lighting, ignition (SLI) batteries to deep-cycle, hybrid, and many in between.
On a standard 2015 Toyota Corolla, a basic SLI replacement battery will do just fine. This type of battery works by offering up a “burst” of energy to start the engine and then recharging using energy from the car’s alternator as it runs.
Another type of battery that you may see recommended for the 2015 Corolla is an absorbent glass mat (AGM) battery. This battery is designed with a “spill-proof” configuration that makes it possible to mount in any orientation.
Meanwhile, AGM batteries are sometimes preferred to SLI batteries because of their ability to better retain energy. They can deliver greater starting power and may be ideal for a 2015 Corolla with accessories like:
- A premium sound system
- An automatic engine start/stop system
- Other electronic or electrical upgrades
Last but not least, be careful not to overlook cold-cranking amps (CCA) as you shop for a replacement battery. The higher the battery’s CCA, the more reliable it will be at starting your car in colder temperatures.
For the 2015 Corolla, you’ll want a battery with a CCA rating of at least 355. If you live in a very harsh winter climate, you may even want to go higher than that with the expectation that a battery will lose some starting power over time.
OEM or Aftermarket: Does it Matter?
When shopping for any replacement part for your 2015 Corolla, it’s also important to understand the difference between an original equipment manufacturer (OEM) part and an aftermarket part.
An OEM part is one that comes directly from your car’s manufacturer; it’s essentially the exact same part that was installed in your car when it was built and assembled.
As you can probably imagine, an OEM part (including a battery) is ideal because you know it was made specifically for your car. It might cost more than an aftermarket model, but it will probably come with a better warranty and peace of mind.
Aftermarket parts, including batteries, tend to be less expensive and are also more easily available than OEM parts. They’re still designed to meet your car’s specifications, but they may not be backed by the same warranty.
Whenever possible, we recommend replacing the battery on your 2015 Corolla with an OEM model. Your local Toyota dealer will probably have OEM batteries in stock; if not, they can order one for you.
When ordering an OEM Toyota battery, look for the Toyota TrueStar label. These typically come with an 84-month, coast-to-coast warranty and free towing/installation.
Aftermarket 2015 Corolla Batteries: Our Suggestion
If you have trouble locating an OEM battery for your 2015 Corolla or if you’re simply looking for a less expensive option, there are aftermarket batteries that can work just fine.
When buying an aftermarket battery, we simply recommend choosing a reputable brand that will stand behind its product with some sort of warranty. Some of the more trusted aftermarket car battery brands to consider include:
- AC Delco
- Duralast
- Optima
- DieHard
To save you some time, we checked the “battery finder” tool on AutoBatteries.com to find the recommended aftermarket battery for a 2015 Toyota Corolla base model with a standard 1.8L four-cylinder engine.
The recommendation is an SLI flooded battery with a 35 group size and minimum CCA of 355. However, you may want to upgrade to an AGM battery with the same specifications if your Corolla is equipped with a premium sound system or engine start-stop technology.
Depending on where you purchase your replacement battery, installation and labor may be included. If not, or if you prefer to swap out your own battery, check out this YouTube tutorial for tips and tricks.
