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Subaru Outback Battery Group Size

Subaru Outback Battery Group Size

ModelProduction
Years
Battery
Group Number
Subaru Outback2010 – 201925 (24)
Subaru Outback2000 – 200935
Subaru Outback2020 – 202147

If you own a Subaru Outback and need to replace its battery, it’s essential to know the right battery group size to ensure optimal performance and fit. After all, different models of Subaru Outback vehicles have required different battery sizes over the years, and you don’t want to end up with a battery that’s incompatible with your beloved car.

Searching for a comprehensive Subaru Outback battery replacement guide or an informative Subaru Outback battery size chart can become an overwhelming task without the right knowledge. Allow me to help streamline this process for you!

Key Takeaways

  • Subaru Outbacks use different battery group sizes based on the model year
  • 2020 and newer models require a group 47 battery
  • 2010-2019 models utilize a group 24 or 25 battery
  • 2000-2009 models are compatible with group 35 batteries
  • Group sizes correlate with battery dimensions and capacity, directly impacting its fit and function in your vehicle
  • A group 24 battery can be a suitable option, offering higher cold-cranking amps (CCA) and reserve capacity (RC)

Understanding Subaru Outback Battery Specifications

Subaru Outback Battery Specifications

When seeking a suitable battery for Subaru Outback vehicles, understanding the specifications is crucial to finding a high-performing and compatible option.

Battery characteristics include physical dimensions, capacity, and essential performance indicators like amp-hours (Ah), cold-cranking amps (CCA), and reserve capacity (RC). Each battery group size, such as Group 24, Group 27, and Group 34, corresponds to these specs and ensures compatibility with specific Subaru Outback model years.

For optimal performance, the chosen battery should have sufficient Ah to power the vehicle’s electronics, ample CCA for reliable cold starts, and adequate RC to maintain vital functions if the alternator fails.

Keep in mind that battery group sizes are crucial in determining Subaru Outback battery specifications, including dimensions, capacity, and essential performance indicators.

Let’s take a closer look at the standard battery group sizes and their corresponding specifications:

Group SizeAmp-Hours (Ah)Subaru Outback Models
Group 2450-70 AhAlternative option for 2010-2019 models
Group 2770-90 AhRarely used in Subaru Outback models
Group 3490-110 AhNot commonly used in Subaru Outback models

Aside from battery group sizes, it’s essential to consider the specific model year of your Subaru Outback, which directly impacts the required battery specifications. The following list presents the standard battery group sizes for different Subaru Outback model years:

  • 2000-2009 models: Group 35
  • 2010-2019 models: Group 25 or 24
  • 2020 and newer: Group 47

Accurately determining the ideal battery specifications for your Subaru Outback contributes to the overall performance and compatibility of your vehicle while also ensuring optimal functionality in various weather conditions and driving scenarios.

The Evolution of Battery Group Sizes in Subaru Outbacks

Subaru Outback has seen numerous changes and improvements over the years, with battery group sizes being an area of significant evolution.

Subaru Outback Models from 2000-2009

From 2000 to 2009, Subaru Outback models consistently relied on batteries from group size 35. These batteries had dimensions of 9.0625 x 6.9375 x 8.875 inches and featured a positive terminal on the right side.

This ensured a proper fit in the designated compartment and provided consistent power and connectivity to the vehicle’s systems.

Odyssey Battery ODP-AGM35 Performance Series AGM Battery
34 Reviews
Odyssey Battery ODP-AGM35 Performance Series AGM Battery
  • Voltage: 12v – PHCA: 1200
  • Cold Cranking Amps (CCA): 675 – HCA: 900
  • Reserve Capacity in Minutes: 110
  • Negative Terminal Location: Left Side
OPTIMA Batteries 8020-164 35 RedTop Starting Battery
  • 12-Volt, 720 Cold Cranking Amps, Size: 9.38 x 7.69 x 6.75-Inches Weight: 31.7 pounds, SAE Posts
  • Reserve capacity of 90 minutes for constant performance
  • Optimal starting power even in bad weather. Case material is Polypropylene
  • Fifteen times more resistant to vibration for durability
Interstate Batteries Group 35 Car Battery Replacement (M-35) 12V, 450 CCA, 18 Month Warranty, Replacement Automotive Battery for Cars and SUVs
  • OUTRAGEOUSLY DEPENDABLE: Interstate’s M car battery series provides Interstate quality and standard performance for the value-minded customer. This battery delivers 685 Cold cranking amps (CCA) and has 120 minutes of reserve capacity
  • GROUP SIZE 34 CAR BATTERY: This battery fits over 500 different year/make/model car batteries! Please confirm if this battery fits your vehicle with Amazon’s Confirmed Fit Tool at the top of this page
  • PERFECT FOR THE VALUE MINDED CUSTOMER: M-34HC car battery is equipped with ample cranking power, the Interstate Batteries’ PowerFast series is perfect for the value-minded customer. This conventional flooded battery delivers 25-30 cycles at 80% depth of discharge
  • MOST TRUSTWORTHY POWER SOURCE: Since 1952, Interstate Batteries purpose has been to deliver the most Outrageously Dependable source of power to the world. Our customers come first, so we strive to create a positive experience for all. We recycle more batteries than we sell; please return to an Interstate All Battery Center near you so we can continue recycling

Updates in Battery Group Size for Models from 2010-2019

From 2010 to 2019, Subaru Outback models underwent a transition in battery group sizes, moving from group 35 to group 25.

While these batteries retained the same physical dimensions as their predecessors (9.0625 x 6.9375 x 8.875 inches), the location of the positive terminal shifted to the left side. This update in battery group size catered to the evolving electrical demands of modern vehicle systems and performance enhancements.

OPTIMA Batteries 8025-160 25 RedTop Starting Battery
  • 12-Volt, 720 Cold Cranking Amps, Size: 10 5/16″ x 6 13/16″ x 7 5/8″ tall, Weight: 39.5 pounds, SAE Posts
  • Reserve capacity of 90 minutes for constant performance;Up to 3X longer life
  • Optimal starting power even in bad weather
  • Fifteen times more resistant to vibration for durability.This item is not for sale in Catalina Island

I recently switched out my battery with a group 24. Going for it gives you a higher CCA and good reserve capacity for the same price as group 25, and it fits perfectly in the tray. It’s also easier to find.

Weize Dual Purpose AGM Battery BCI Group 24M, Starter & Deep Cycle 150RC 550CCA 12V 80AH Sealed Marine & RV Battery
  • [HIGH PERFORMANCE]: Powered by advanced AGM technology, the WEIZE BCI Group 24M has a low internal resistance and high output power, offering a reliable power supply and a long battery life, 2x more cycle life than traditional flooded marine batteries. Terminal: Left : Positive (+)-Red, Right: Negative (-)-Black.
  • [DUAL PURPOSE ]: The WEIZE BCI Group 24M is a dual purpose deep cycle sealed AGM marine and RV battery. It features an outstanding starting power and deep cycling capability for long-lasting power supply.
  • [QUICK CHARGE]: The WEIZE BCI Group 24M features quick charging, which allows it to charge up to five times faster, saving time and increasing efficiency. Please use a constant voltage of 14.4± 0.1V and a max current of 15.8A to charge the battery until the current has no change for 2 to 3 hours, But the maximum charging time must not exceed 24 hours.
  • [LOW MAINTENANCE]: Being almost maintenance-free, the WEIZE BCI Group 24M reduces surface corrosion, proves more durable, and performs well against vibrations, has 20x more vibration resistance than flooded batteries.
Interstate Batteries Group 24F Car Battery Replacement (MTP-24F) 12V, 750 CCA, 30 Month Warranty, Replacement Automotive Battery for Cars, Trucks, SUVs, Minivans
  • OUTRAGEOUSLY DEPENDABLE: Interstate’s MTP car battery series delivers long life and superior performance while matching your car’s original equipment manufacturer specifications. This battery delivers 750 Cold cranking amps (CCA) and has 130 minutes of reserve capacity
  • GROUP SIZE 24F CAR BATTERY: This battery fits over 1,450 different year/make/model car batteries! Please confirm if this battery fits your vehicle with Amazon’s Confirmed Fit Tool at the top of this page
  • OUR “BEST” FLOODED, NON-AGM CAR BATTERY: MTP-24F offers the longest life in cold to moderate climates due to higher Cold Cranking Amps (CCA) and Reserve Capacity (RC) ratings. This conventional flooded battery delivers 25-30 cycles at 80% depth of discharge
  • MOST TRUSTWORTHY POWER SOURCE: Since 1952, Interstate Batteries purpose has been to deliver the most Outrageously Dependable source of power to the world. Our customers come first, so we strive to create a positive experience for all. We recycle more batteries than we sell; please return to an Interstate All Battery Center near you so we can continue recycling
Interstate Batteries Group 24 Car Battery Replacement (MT-24) 12V, 600 CCA, 24 Month Warranty, Replacement Automotive Battery for Cars, Trucks, SUVs, Minivans
  • OUTRAGEOUSLY DEPENDABLE: The Interstate MT car battery series delivers reliable battery life and enhanced performance in hot to moderate climates. This battery delivers 600 Cold cranking amps (CCA) and has 115 minutes of reserve capacity
  • GROUP SIZE 24 CAR BATTERY: This battery fits over 3,500 different year/make/model car batteries! Please confirm if this battery fits your vehicle with Amazon’s Confirmed Fit Tool at the top of this page
  • OUR “BETTER” FLOODED, NON-AGM CAR BATTERY: MT-24 offers the longest life in hot to moderate climates due to a high electrolyte-to-lead ratio that helps resist extreme temperatures. This conventional flooded battery delivers 25-30 cycles at 80% depth of discharge
  • MOST TRUSTWORTHY POWER SOURCE: Since 1952, Interstate Batteries purpose has been to deliver the most Outrageously Dependable source of power to the world. Our customers come first, so we strive to create a positive experience for all. We recycle more batteries than we sell; please return to an Interstate All Battery Center near you so we can continue recycling

The Latest Subaru Outback Models from 2020 and Beyond

Subaru Outback models from 2020 onwards have adopted the Group 47 battery, slightly modifying dimensions to 9.5625 x 6.9375 x 7.5 inches and repositioning the positive terminal back on the right side. This change signifies a response to the latest design adjustments and requirements for contemporary vehicle electronics and engine systems.

“As vehicle technologies evolve and driving needs change, the battery requirements for different models throughout the years have shifted accordingly. Proper installation and selection, in alignment with the manufacturer’s guidelines, are essential for safe and efficient operation of your Subaru Outback.”

Understanding these changes in battery group sizes for Subaru Outback models provides better guidance when selecting the appropriate battery. For a quick overview, the table below summarizes the primary battery groups and compatibility for various Subaru Outback model years:

ACDelco Gold 47AGMA 36 Month Warranty AGM BCI Group 47 lead acid agm Battery
  • High density negative paste, improves performance and increases battery life
  • Enhanced life alloy/Silver Calcium stamped alloy increases cycle life and improves performance
  • Calcium Lead positive grid, maximizes conductivity and allows for low resistance
  • Robust Envelope Separator with puncture-resistant back, allows for increased acid circulation and prevents shorts. Improved acid circulation, helps the battery to remain cool, and extend battery life.
ACDelco 47AGM Professional AGM Automotive BCI Group 47 Battery
  • High density negative paste, improves performance and increases battery life;Terminal Type: Top Post
  • Enhanced life alloy/Silver Calcium stamped alloy increases cycle life and improves performance
  • Calcium Lead positive grid, maximizes conductivity and allows for low resistance
  • Robust Envelope Separator with puncture-resistant back, allows for increased acid circulation and prevents shorts. Improved acid circulation, helps the battery to remain cool, and extend battery life.
Model YearsBattery Group SizeDimensions (L x W x H)Positive Terminal Location
2000-2009Group 359.0625 x 6.9375 x 8.875 inchesRight
2010-2019Group 259.0625 x 6.9375 x 8.875 inchesLeft
2020 and BeyondGroup 479.5625 x 6.9375 x 7.5 inchesRight

By considering the essential information outlined in this section, you can make an informed decision when selecting an appropriate battery for your Subaru Outback. Always consult the manufacturer’s guide or reliable sources to confirm accurate battery sizes and compatibility.

Key Factors to Consider When Selecting Your Subaru Outback Battery

When choosing a battery for your Subaru Outback, there are several factors to consider beyond just the group size. Focusing on these essential elements will help ensure a safe and efficient battery installation while optimizing your vehicle’s overall performance.

The key considerations for Subaru Outback battery selection are the type of battery, voltage capacity, cold-cranking amps (CCA), reserve capacity (RC), and compatibility with the manufacturer’s recommended specifications.

“Selecting the right battery for your Subaru Outback directly impacts the longevity, safety, and performance of your vehicle’s electrical system.”

Here is a list of essential factors to consider when choosing the best battery for your Subaru Outback:

  1. Battery Type (Wet or Dry Cell)
  2. Voltage Capacity (Amp-Hours)
  3. Cold-Cranking Amps (CCA)
  4. Reserve Capacity (RC)
  5. Manufacturer’s Recommended Specifications

When comparing different battery options, take into account the voltage capacity and performance ratings, such as amp-hours (Ah), cold-cranking amps (CCA), and reserve capacity (RC).

Choosing a battery with the right Ah rating ensures your vehicle’s electrical needs are met without over or under capacity, CCA helps your battery perform efficiently in cold temperatures, and RC indicates the duration the battery can power essential systems if the charging system fails.

Battery TypeVoltage Capacity (Ah)Cold-Cranking Amps (CCA)Reserve Capacity (RC)
Wet Cell50-110550-85080-180
Dry Cell50-120625-90090-190

Wet cell batteries typically cost less upfront but require more maintenance, while dry cell batteries are more expensive initially, providing longer life and less maintenance. To ensure a proper fit and safe operation, double-check that the battery suits your specific Subaru Outback model by referring to the manufacturer’s recommended specifications.

Considering these factors, you will be better equipped to decide on the optimal battery selection for your Subaru Outback. Pairing your vehicle with the right battery will facilitate a seamless installation process, extend the life of your battery, and enhance the performance of your Subaru Outback’s electrical system.

Conclusion: Ensuring Compatibility and Performance

Finding the right Subaru Outback battery group size is critical for compatibility and performance. As our driving needs and vehicle technology have evolved over the years, so have the battery requirements for different Subaru Outback models.

Ensuring proper installation and selection is key to maintaining safe and efficient operation of your Subaru Outback.

Whether maintaining an older model or updating a newer one, identifying the correct battery group size ensures seamless integration with the vehicle’s electrical system.

Remember to consider important factors beyond group size, such as Ah ratings, CCA ratings, and RC ratings, as well as wet and dry cell types for your Subaru Outback battery.

By taking all of these elements into account, you can make a more informed decision and ensure that your Subaru Outback battery is equipped to handle its electrical requirements and perform effectively in various conditions.

FAQ

What are the different Subaru Outback battery group sizes based on model years?

For Subaru Outbacks, the battery group sizes vary as follows: 2020 and newer models use a group 47 battery, 2010-2019 models utilize a group 25 battery, and 2000-2009 models are compatible with group 35 batteries.

What are the key specifications to consider when selecting a battery for my Subaru Outback?

Key specifications include the battery’s amp-hours (Ah), cold-cranking amps (CCA), reserve capacity (RC), dimensions, and compatibility for your specific model year.

How do battery group sizes relate to dimensions and performance?

Battery group sizes correlate with their physical dimensions and capacity, impacting how the battery fits in the vehicle and performs regarding power output, cold starting capabilities, and reserve power.

What does a battery’s Ah rating indicate?

A battery’s Ah (amp-hour) rating indicates its capacity to deliver electrical current over a set period. The Ah should be sufficient to power the vehicle’s electronics and support its electrical requirements.

How important is the rating of cold-cranking amps (CCA) for a Subaru Outback battery?

The CCA rating is crucial because it measures the battery’s ability to start an engine in cold temperatures. A battery with a high CCA rating will be more reliable for starting your Subaru Outback in colder climates.

How can I ensure I select the correct Subaru Outback battery group size?

It’s crucial to follow the manufacturer’s guide. Proper installation and selection are essential for the safe and efficient operation of your Subaru Outback.

Author

Last update on 2024-06-12 / Affiliate links / Images from Amazon Product Advertising API

About Andrew Price

Andrew has been our top-rated author since 2019. He's an enormous car enthusiast and customization pro, who knows how to get more performance from your car. Ask your questions in the comment box down below this article.

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