4 Best Batteries for Subaru Outback: Reviewed

Subaru Outback is a decent vehicle that is now momentarily in its fifth generation of production, and it assures the fact that it indeed is a good car to choose and use.

Anyways, if you own a Subaru Outback, and some changes in terms of batteries have to be done, there are a few specifications to have in mind, in order to find the best one that fits.

In this article, I have compiled a list of four of the best batteries for Subaru Outback you can find on the market today!

A Quick Look at My Favorite Batteries for Subaru Outback

ImageProductFeaturesPrice
Best Fit for 2000 Subaru Outback
Optima Batteries OPT8040-218

Optima Batteries OPT8040-218

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Best for 2000-2009 Models
Optima Batteries 8020-164

Optima Batteries 8020-164

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Best for 2010-2019 Models
Optima Batteries 8025-160 25 RedTop Starting Battery

Optima Batteries 8025-160 25 RedTop Starting Battery

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Best for the 2020-2021 Models
Deka 9A47 AGM Intimidator Battery

Deka 9A47 AGM Intimidator Battery

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Key Takeaways


  • Subaru Outback is an impressive mid-size SUV car that is easy to drive and offers great features.
  • Choosing the best battery for Subaru Outback depends on the year that your car was launched.
  • If you own a Subaru Outback of 2020 or 2021, the DEKA 9A47 AGM battery is definitely one to check out.
  • A very famous brand that brings out batteries for a Subaru Outback Car is the Optima, with some amazing batteries to purchase.
  • A few things to consider in batteries for Subaru Outback include group size, cell type, CCA, and voltage.

The Top Four Best Batteries for Subaru Outback

As mentioned above, finding the right battery for a Subaru Outback means checking out some of the battery specifications, through which you can understand whether it is the perfect fit for your car, in this case, the Subaru Outback.

Below, I will mention the batteries that fit properly, along with every specification and feature they own, so you can choose easier!

4. Optima OPT8040-218 – Best Fit for 2000 Subaru Outback

In case you own a Subaru Outback of 2000, you should look no further than the Optima OPT8040-218. It is specifically made for this car and this year’s model, and it will give your car amazing power.

Main Features/Specifications

This battery is a lead-acid one and comes from group size 35. Based on these two specifications, it tells that it will fit perfectly in your Subaru Outback. This battery will work perfectly fine, and it will only deliver powerfulness to the car.

CCA and Voltage

In terms of CCA, the OPT8040-218 offers 650, which is more than enough, because the car definitely needs a higher CCA rating, so that it can be driven easily in the coldest temperatures.

When it comes to the voltage, this battery will work at 12 Volts, which once again, is more than enough voltage to run the car.

Quality of Build

The OPT8040-218 battery is known to be one of the highest-quality batteries in terms of build, and it is durable enough to perform perfectly for many years.

Key Specifications

  • Group Size: 35
  • Battery Cell Type: Lead Acid
  • CCA: 650
  • Voltage: 12 Volts
  • Size:38 x 6.75 x 7.69 inches
  • Weight:4 pounds

Pros

  • Durable
  • Perfect Fit for 2000 Subaru Outback
  • High CCA

Cons

  • Won’t Work with Other Models

Why Should You Buy It?


As said, the Optima OPT8040-218 battery is the greatest one to use if you are driving and need a battery replacement for your Subaru Outback 2000. With this battery, your 2000 car will be running like new.

Also Read: How To Buy Battaries for Your Car


3. Optima 8020-164 – Best for 2000-2009 Models

Just like the above-mentioned battery, the 8020-164 battery will also do a great job with your 2000 model of Subaru Outback, but the good thing is that this one covers a higher range of models, starting from the year 2000, and it ends up in 2009.

Main Features/Specifications

Once again, we deal with a battery that comes from the 35-group size, but something that you should know about this battery is that it owns two different cell types, such as lead-acid and AGM. Don’t worry, as they both will work perfectly for your Subaru Outback SUV.

CCA and Voltage

The higher the CCA level, the better the car runs in low temperatures, and something I have noticed when using this battery is considering the fact that it has a 720 CCA, it starts immediately, no matter the weather condition.

The voltage is the same though, as it works at 12 Volts, the same as the last battery mentioned.

Quality of Build

The Optima 8020-164 is a well-known battery when it comes to the overall build quality and the durability it offers. It brings out a perfect resistance to vibration, and it won’t ever be damaged. The case, on the other hand, is made of polypropylene.

Key Specifications

  • Group Size: 35
  • Battery Cell Type: Lead Acid, AGM
  • CCA: 720
  • Voltage: 12 Volts
  • Size:3 x 6.8 x 7.6 inches
  • Weight:7 pounds

Pros

  • Covers All 2000s Models
  • High CCA Rating
  • Resistant to Vibrations

Cons

  • Somehow Pricey for Some

Why Should You Buy It?


Optima 8020-164 is the 2000s battery type! It will fit all models starting from 2000 to 2009 and it will give extreme power to your Subaru Outback!


2. Optima 8025-160 – Best for 2010-2019 Models

Another battery coming from the Optima brand is the 8025-160 battery model that does a great job on the Subaru Outback cars launched in the 2010s. More exactly said, the 8020-160 battery from Optima will fit all models launched from 2010 to 2019.

Main Features/Specifications

Differing from the two mentioned batteries from Optima, the 8025-160 model comes with a different group size and it is the 25, which once again mentioned, is a fit for the 2010s Subaru Outback SUVs and will give your car massive power.

As for the cell type, you deal with lead acid and AGM again, lead acid refers to the liquid component within, and AGM is a beast when it comes to chemical corrosion resistance.

CCA and Voltage

A 720 CCA appears in this battery as well, which boosts the car to work perfectly in any harsh and super cold weather condition. I wouldn’t want to stop at the voltage as it is the same as the other batteries I mentioned above.

Quality of Build

When it comes to durability, the important part is that this battery is very resistant to vibration in any case, and with the materials, it is made of, it surely brings out a long-time use.

Key Specifications

  • Group Size: 25
  • Battery Cell Type: Lead Acid, AGM
  • CCA: 720
  • Voltage: 12 Volts
  • Size:32 x 6.8 x 7.62 inches
  • Weight: 32 pounds

Pros

  • Perfect CCA Rating
  • Super Resistant to Vibration
  • Fits Perfectly the 2010s Models

Cons

  • Needs Higher Voltage (for some)

Why Should You Buy It?


Optima 8025-160 covers a later launch of the Subaru Outback SUV, and it brings perfect compatibility when it comes to the 2010 to 2019 models of this car. So, if the model of Subaru Outback that you own stands between these years, with Optima 8020-160 you are ready to go!

Also Read: 5 Excellent Rims for a Ford F150


1. DEKA 9A47 AGM – Best for the 2020-2021 Models

As you can notice, all the batteries I mentioned above come from the same brand and it is Optima, but right now, for the 2020 and 2021 models of Subaru Outback, I will mention a new name, and it is the DEKA 9A47 AGM battery, which is indeed one of the greatest batteries to use.

Main Features/Specifications

Coming from a group size of 47 and being an AGM in terms of cell types, this battery will work perfectly in a Subaru Outback, and that’s because it is the perfect fit for the new models of this car.

CCA and Voltage

To be honest, I don’t worry when the temperatures are low and I have this battery in my car, and that’s only because of the CCA rating of 600, which helps the battery work properly wherever and whenever I want.

The voltage is 12V, but still, something I want to share here is that DEKA 9A47 is very versatile, as it can work perfectly on vans, trucks, passenger cars, and SUVs.

Quality of Build

DEKA has always brought durable batteries to the market, but since there is no specification from the manufacturer for the resistance, at least something that I could find, I don’t want to put too much attention on it because based on my experience, the battery has performed remarkably.

Key Specifications

  • Group Size: 47
  • Battery Cell Type: AGM
  • CCA: 600
  • Voltage: 12 Volts
  • Size: 16 x 8 x 2 inches
  • Weight: 39 pounds

Pros

  • Versatile Use
  • Perfect for 2020 and 2021 Subaru Outback
  • 600 CCA Rating

Cons

  • Not Specified Durability

Why Should You Buy It?


DEKA 9A47 AGM battery is made for the new models of Subaru Outback and you can use it in 2020 and 2021 models of this car. Being powerful and also a beast when it comes to the specs sheet, this battery will never disappoint you!


Buyer’s Guide

Anything you need to buy owns its own specifications, and as you can see, in batteries I mentioned some things you need to know such as the group size, cell type, CCA, and voltage.

All those things are the most important considerations you need to make in order to choose the right fit for your car, in this case, Subaru Outback!

Let me mention them specifically so that you understand better the buying guide on choosing the greatest battery for your Subaru Outback.

Group Size

The group size of the battery refers to the overall size of the battery in terms of length, width, and height. Also, every car has its own specification in the manual, which tells whether you can use it.

For Subaru Outback, you can use a 47, 35, and 25 group size. It all depends on the year that your Subaru Outback was launched.

Cell Type

Cell type tells you what kind of battery you are dealing with, and there are a few of them, such as Lead Acid batteries, which are prior when needing them for a Subaru Outback car.

Something else you will find for Subaru Outback are AGM batteries meaning absorbed glass mat, that has the job of wicking the electrolyte solution in and between the battery plates.

When choosing a battery for Subaru Outback, make sure to find lead-acid or AGM batteries!

CCA

CCA means Cold Cranking Amps, and it is a type of rating that shows the ability of the battery to start running a car when the temperatures are too low.

In Subaru Outback, the minimum CCA should be 90, and above that, you can use whatever level of CCA.

Voltage

As you may know, the battery voltage tells the difference related to the electrical potential on the positive and the negative terminals in battery types.

However, batteries come in different voltages, but when it comes to the Subaru Outback car, you will find them mostly at 12V, and it is more than enough.

Frequently Asked Questions

What type of car is Subaru Outback?

Subaru Outback is a midsize SUV that was first launched in the 1990s, and it is still in production nowadays.

Is there an exact group size of batteries for the Subaru Outback?

Subaru Outback doesn’t only own one kind of group size for their batteries. Instead, they can work with 47, 35, and 25 group sizes of batteries.

Can I use any kind of battery cell type?

Once again, no you can’t! Subaru Outback works with some specific types of batteries which are lead-acid or AGM, and every car has its main specification, in terms of cell type.

Are car batteries too expensive?

Even though batteries in a car play one of the most important roles in making the car function properly, they are not the most expensive items you can find on the market.

All the batteries I included in this article come at a price of under 300$, which is great when you consider replacements for car batteries!

Also Read: Is It Safe To Sleep With My AC On?

Final Words

I know that choosing a battery for a specific car is one of the hardest decisions one can make and that’s because there are a few things you need to check out, along with some different conditions of the car.

Still, when you check the battery’s group size, cell type, CCA, and voltage of the battery, there is no doubt that you will be ready to understand first, and then purchase the right battery for the car you own, in this case, your Subaru Outback SUV.

I hope that everything I mentioned in this article will help you make the right purchase, but something I want to add is that it all depends on the year that your car was launched.

Good luck and happy driving!