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.

Optima Batteries OPT8020-164 35 RedTop Starting Battery
2,259 Reviews
Optima Batteries OPT8020-164 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
Sale
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty
688 Reviews
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty
  • 100RC rating: Provides reliable performance and long service life, Up to 2 times the cycle life of conventional batteries.Nominal Voltage:12V, Capacity: 60 Ah. CCA: 680A, Self Discharge:
  • 60AH capacity: Delivers consistent power over time, Cycles more, and recharges faster than conventional batteries.
  • 680 CCA: Ensures quick and reliable starting power.Delivers superior starting power in cold weather, and resists internal corrosion from heat.
  • Advanced technology: Specially designed for vehicles with start-stop technology and accessories that demand greater power, Whether you drive a car, truck, or SUV, this 100RC 60AH 680CCA automotive start-stop battery is the perfect choice for reliability.
Odyssey Battery ODP-AGM35 Performance Series AGM Battery
26 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

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
1,279 Reviews
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.

OPTIMA Batteries 8025-160 25 RedTop Starting Battery
1,279 Reviews
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
Optima Batteries OPT8020-164 35 RedTop Starting Battery
2,259 Reviews
Optima Batteries OPT8020-164 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
Sale
Weize Platinum AGM Battery BCI Group 48-12v 70ah H6 Size 48 Automotive Battery, 120RC, 760CCA, 36 Months Warranty
688 Reviews
Weize Platinum AGM Battery BCI Group 48-12v 70ah H6 Size 48 Automotive Battery, 120RC, 760CCA, 36 Months Warranty
  • With a 70AH capacity and 760 cold cranking amps (CCA). Provides reliable performance and long service life, Up to 2 times the cycle life of conventional batteries. If your car’s original battery is an AGM type, you must continue using an AGM battery, as your car will not accept a “downgrade” to a flooded battery. Nominal Voltage:12V. Charging Voltage:14.4~15.0V. Acceptable Charging Current:0~21A. Operating Temperature Range: -22°F~158°F. Terminal: Tapered terminal (Left: negative(-) ,Right : positive (+) ). D mensions: 6.89″ x 10.94″ x 7.48″.
  • Heat / Cold Resistance: The materials used in the construction of AGM batteries (such as glass fiber mats and specialized separators) have better heat resistance. This allows AGM batteries to maintain their performance and capacity even in the hottest climates, They are also more resistant to extreme temperatures, making them ideal for hot or cold regions.
  • Low Self-Discharge: AGM batteries have lower self-discharge rates compared to flooded batteries. Self-discharge refers to the loss of capacity that batteries experience over time when not in use. In hot climates, when the battery may need to be stored for extended periods or not frequently used, AGM batteries can better maintain charge, providing higher voltage output and easier engine start-up in any climate.
  • Enhanced Safety: AGM batteries have a lower risk of acid leaks and spills compared to flooded batteries. This is because the acid is absorbed and held within the glass fiber mats, reducing the risk of corrosion or damage to surrounding components,this makes AGM batteries more durable and long-lasting, is also two to three times longer than flooded batteries. AGM batteries also have a lower risk of explosion and are safer to handle, making them ideal for high-performance vehicles.

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:

Sale
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty
688 Reviews
Weize Platinum AGM Battery BCI Group 47-12v 60ah H5 Size 47 Automotive Battery, 100RC, 680CCA, 36 Months Warranty
  • 100RC rating: Provides reliable performance and long service life, Up to 2 times the cycle life of conventional batteries.Nominal Voltage:12V, Capacity: 60 Ah. CCA: 680A, Self Discharge:
  • 60AH capacity: Delivers consistent power over time, Cycles more, and recharges faster than conventional batteries.
  • 680 CCA: Ensures quick and reliable starting power.Delivers superior starting power in cold weather, and resists internal corrosion from heat.
  • Advanced technology: Specially designed for vehicles with start-stop technology and accessories that demand greater power, Whether you drive a car, truck, or SUV, this 100RC 60AH 680CCA automotive start-stop battery is the perfect choice for reliability.
TYKOOL Auto Lithium Battery BCI GROUP 47, 12V 40AH Automotive Battery,96RC,1200CCA, High-Performance Car Battery,36 Months Warranty
2 Reviews
TYKOOL Auto Lithium Battery BCI GROUP 47, 12V 40AH Automotive Battery,96RC,1200CCA, High-Performance Car Battery,36 Months Warranty
  • Upgrade to Lithium Battery: A perfect replacement for Lead-Acid batteries. No sulfation. Requires no activation, no acid, no maintenance, and no water needed. And it comes fully charged and ready to install.
  • Main Parameters: Size: 9.45*6.85*7.48 in(L*W*H), Polarity:[- +], Weight:12.14 Pounds, Voltage: 12.8V, Capacity: 40Ah,Cold Cranking Ampere:1200A.Size, cold cranking amps, terminal location, and battery type are essential factors in getting the right unit. please measure your old battery and compare the dimensions with TYKOOL battery, if the measurements are similar, positive and negative poles are consistent, and it will fit your vehicle.
  • 96RC rating: High Performance and long service life, Up to 2 times the cycle life of conventional batteries.
  • 40AH capacity: Compared to conventional batteries, TYKOOL Lithium Car Batteries output stable power,10X more Cycles, and faster charging.
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

The information provided in this article is intended for informational and educational purposes only and should not be construed as professional mechanical advice. While the author has made every effort to ensure the accuracy and completeness of the information in this article, we make no warranties or representations as to the accuracy, completeness, reliability, or suitability of the information provided.

Engineswork.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. As an Amazon Associate, we earn from qualifying purchases.

 

Last update on 2024-02-23 / Affiliate links / Images from Amazon Product Advertising API

Leave a Comment

Your email address will not be published. Required fields are marked *