The 2004 Subaru WRX typically needs a Group 35 battery. Suitable options from OPTIMA include the YELLOWTOP for better performance and the REDTOP for regular use. Always check your vehicle’s specifications to ensure battery compatibility for optimal performance and longevity.
The Group 35 battery typically features a capacity of around 600 to 700 Cold Cranking Amps (CCA). Cold Cranking Amps measure the battery’s ability to start the engine in cold temperatures. A higher CCA rating is beneficial for those in colder climates.
Popular brands such as Optima, Interstate, and ACDelco offer reliable Group Size 35 batteries. Each brand provides various options with distinct warranties and performance features.
When replacing the battery, consider factors such as the climate and your driving habits. The right battery will extend the life of your vehicle and improve reliability.
Now that you know the best battery size for your 2004 WRX, let’s explore how to install it correctly and what maintenance tips can enhance its lifespan.
What Battery Size Does a 2004 WRX Require for Optimal Performance?
The 2004 Subaru WRX requires a Group 35 battery for optimal performance.
- Recommended Battery Size: Group 35
- Cold Cranking Amps (CCA): At least 590 CCA
- Amp-Hour Rating: 40-60 Ah
- Battery Brands: Optima, Interstate, Exide
- Perspective on Maintenance: Regular check-ups and proper installation contribute to battery lifespan.
Considering the importance of battery selection, let’s explore each point for a more comprehensive understanding.
-
Recommended Battery Size: Group 35: The Group 35 battery is designed to fit the specifications of the 2004 WRX. This size ensures an exact fit within the battery compartment, facilitating proper installation and secure mounting. According to the Battery Council International, Group 35 batteries measure approximately 9.1 inches in length, 6.9 inches in width, and 8.7 inches in height.
-
Cold Cranking Amps (CCA): At least 590 CCA: Cold Cranking Amps refers to the battery’s ability to start an engine in cold temperatures. For the 2004 WRX, a minimum of 590 CCA is necessary to ensure reliable starts during winter months. Johnson Controls, a leading battery manufacturer, asserts that higher CCA ratings lead to improved starting power in extreme weather conditions.
-
Amp-Hour Rating: 40-60 Ah: The Amp-Hour rating indicates how long a battery can supply a given amount of current. For the 2004 WRX, an Amp-Hour rating between 40 to 60 Ah is sufficient for standard driving conditions. The National Electrical Manufacturers Association recommends selecting batteries within this range for optimal performance and longevity.
-
Battery Brands: Optima, Interstate, Exide: Optima, Interstate, and Exide are popular choices for the 2004 WRX. These brands offer high-quality batteries that provide durability and effective performance. Consumer Reports highlights Optima for its exceptional performance in various temperature conditions, while Interstate is praised for value with prolonged warranties.
-
Perspective on Maintenance: Regular check-ups and proper installation contribute to battery lifespan: Maintenance plays a crucial role in battery longevity. Keeping terminals clean and ensuring tight connections can prevent drainage. According to a study by the Consumer Battery Association, regular checks can extend battery life by up to 25%. Additionally, correct installation minimizes risks of acid leaks and damage.
In conclusion, selecting the right battery size and considering factors like CCA, Amp-Hour rating, brand, and maintenance can significantly enhance the performance and longevity of a 2004 Subaru WRX.
What Are the Ideal Specifications for a 2004 WRX Battery?
The ideal specifications for a 2004 WRX battery include a Group Size of 34, a minimum Cold Cranking Amps (CCA) rating of 600, and a minimum Reserve Capacity (RC) of 90 minutes.
- Battery Group Size: 34
- Cold Cranking Amps (CCA): Minimum 600
- Reserve Capacity (RC): Minimum 90 minutes
- Battery Type: Lead-acid, AGM recommended
- Dimensions: Approximately 10.25 x 6.88 x 7.5 inches
- Terminal Type: Top terminal
Understanding these specifications is critical to ensure optimal performance and longevity of your vehicle’s battery. Now, let’s look at each specification in detail.
-
Battery Group Size: 34
The battery group size 34 fits into many Subaru WRX models, including the 2004 version. This size ensures that the battery has the proper dimensions to fit securely in the battery tray. A perfect fit minimizes movement and potential damage during driving. -
Cold Cranking Amps (CCA): Minimum 600
Cold Cranking Amps (CCA) measures a battery’s ability to start an engine in cold temperatures. A minimum rating of 600 CCA for the 2004 WRX ensures reliable starting power during winter months and in colder climates. Higher CCA ratings provide additional starting power; however, meeting the minimum requirement is essential. -
Reserve Capacity (RC): Minimum 90 minutes
Reserve capacity (RC) indicates how long a battery can supply power without being charged. A minimum RC of 90 minutes for the 2004 WRX allows sufficient power for crucial electronic systems if the alternator fails. This is important for maintaining functionality in adverse situations. -
Battery Type: Lead-acid, AGM recommended
Lead-acid batteries are commonly used in vehicles, but Absorbent Glass Mat (AGM) batteries provide better performance and longevity. AGM batteries are sealed and resistant to vibrations, making them ideal for performance vehicles like the WRX. They also have lower self-discharge rates, enhancing reliability. -
Dimensions: Approximately 10.25 x 6.88 x 7.5 inches
The battery dimensions of approximately 10.25 x 6.88 x 7.5 inches are important to ensure a snug fit in the battery compartment. Properly sized batteries prevent movement and excessive wear on the electrical components of the vehicle. -
Terminal Type: Top terminal
The top terminal design is standard for the 2004 WRX, allowing for easy installation and secure connections. Proper terminal connection is vital for establishing an efficient electrical connection, which impacts overall vehicle performance.
Considering these specifications will assist any WRX owner in selecting the appropriate battery for their vehicle, ensuring reliable performance and longevity.
What Cold Cranking Amps (CCA) Should You Look For in a 2004 WRX Battery?
For a 2004 WRX battery, you should look for a battery with a minimum Cold Cranking Amps (CCA) rating of 600.
Key points to consider regarding CCA for a 2004 WRX battery include:
1. Minimum recommended CCA
2. Battery size and type
3. Brand recommendations
4. Seasonal climate considerations
5. Alternative viewpoints on battery performance
Considering these key points helps in making an informed decision about battery selection for the 2004 WRX.
-
Minimum Recommended CCA: CCA measures a battery’s ability to start an engine in cold temperatures. For the 2004 WRX, a CCA of at least 600 is advisable. This rating ensures reliable engine start-up, especially during winter months or in colder regions.
-
Battery Size and Type: The 2004 WRX typically uses Group Size 34 batteries. Opt for a battery that fits this size category to ensure compatibility. There are two common types of batteries: lead-acid and AGM (Absorbent Glass Mat). AGM batteries are often preferred for their better performance and stability under extreme conditions.
-
Brand Recommendations: Brands like Optima, Interstate, and DieHard are well-regarded for WRX batteries. These brands offer batteries with high CCA ratings and extended warranties, ensuring reliability and longevity.
-
Seasonal Climate Considerations: Your local climate affects the necessary CCA. Colder climates may require higher CCA ratings for optimal starting performance. If you reside in a warmer area, a lower CCA rating may be sufficient, but it’s best to stick with the manufacturer’s recommendation.
-
Alternative Viewpoints on Battery Performance: Some enthusiasts argue that higher CCA ratings improve performance and longevity. Others maintain that quality and maintenance matter just as much, if not more, than CCA alone. Reliability, brand reputation, and battery maintenance routines play crucial roles in overall performance.
By considering these aspects, you can select the most appropriate battery for your 2004 WRX, ensuring reliable starts and efficient performance.
What is the Required Reserve Capacity (RC) for a Battery in a 2004 WRX?
The Required Reserve Capacity (RC) for a battery indicates the battery’s ability to supply energy for a set period under a fixed load. This measurement reflects how long a battery can maintain a specified discharge rate, often considered essential for vehicle performance.
According to the Battery Manufacturer’s Association, Reserve Capacity is defined as the number of minutes a fully charged battery can deliver 25 amps at 77°F before the voltage drops below 10.5 volts. This standard helps assess battery suitability for various applications, including vehicles.
The RC rating impacts a vehicle’s reliability, especially in adverse conditions like cold weather. An adequate RC ensures that a battery can support essential functions, such as starting the engine and powering electrical accessories. For a 2004 Subaru WRX, a battery with an RC of 90 to 120 minutes is typically recommended.
The National Renewable Energy Laboratory adds that battery performance can vary based on design and operating conditions, emphasizing the importance of selecting an appropriate battery for specific vehicle requirements. A battery’s RC may decrease with age and repeated discharges, impacting its overall performance.
Factors affecting RC include temperature, battery age, and load. For example, cold temperatures can increase resistance and reduce capacity.
The average RC for automotive batteries ranges from 80 to 120 minutes. In extreme conditions, a battery may only deliver around 70% of its rated capacity.
Improper battery selection or poor maintenance can lead to vehicle breakdowns and increased repair costs. Inadequate battery power can also affect a driver’s safety during winter months.
To ensure optimal battery performance, the Auto Care Association recommends regular battery checks and selecting batteries from reputable manufacturers that meet original equipment specifications.
Utilizing smart chargers, testing battery health, and opting for high-quality maintenance-free batteries can enhance vehicle reliability and extend battery lifespan. These strategies help mitigate potential battery-related issues.
Which Battery Brands Are Recommended for a 2004 WRX?
The recommended battery brands for a 2004 WRX include several options known for their reliability and performance.
- Optima Batteries
- Interstate Batteries
- Exide Batteries
- ACDelco Batteries
- Bosch Batteries
These brands often receive positive reviews from WRX owners and automotive specialists. However, some users may prefer less common brands for specific performance attributes. It is essential to consider the attributes of each battery type based on personal needs and vehicle usage.
Optima Batteries is a well-known brand that provides high-performance AGM (Absorbent Glass Mat) batteries. These batteries are designed to deliver a robust starting power and can handle deep cycling. Their durability often appeals to performance enthusiasts. Many WRX owners report increased cranking power and longevity with Optima products.
Interstate Batteries offers a solid line of conventional and AGM batteries suitable for the WRX. They are widely used in the automotive industry, known for reliability and performance. Interstate batteries are often regarded for their warranty programs and customer service. They meet the needs of standard driving conditions effectively.
Exide Batteries presents various models that accommodate the 2004 WRX. They have both conventional and maintenance-free options, catering to different preferences. Exide batteries are noted for their value and decent performance, making them a popular choice for budget-conscious consumers.
ACDelco Batteries provides a variety of options for the WRX, including both standard flooded and AGM batteries. Their products are recognized for meeting or exceeding OEM specifications. ACDelco enjoys a good reputation among car enthusiasts for providing reliable power at competitive prices.
Bosch Batteries round out the list with robust options designed for high-performance vehicles like the WRX. Bosch batteries often feature advanced technology, ensuring excellent starting power and lifespan. They cater to those who prioritize quality and performance in their battery choice.
In summary, the best battery choice for your 2004 WRX depends on your driving needs and personal preferences.
What Factors Should You Consider When Choosing a Battery for a 2004 WRX?
To choose a battery for a 2004 WRX, consider factors such as size, power requirements, type, climate, warranty, and brand reputation.
- Battery Size
- Power Requirements (Cold Cranking Amps and Reserve Capacity)
- Battery Type (Lead-Acid vs. AGM)
- Climate Considerations
- Warranty
- Brand Reputation
When assessing these factors, it is essential to ensure compatibility and reliability for your vehicle’s performance.
-
Battery Size:
The battery size for a 2004 WRX is typically Group Size 35. This measurement corresponds to the physical dimensions of the battery, ensuring it fits securely in the battery tray. Using the correct size is crucial to prevent movement, which can lead to connections loosening and electrical issues. -
Power Requirements:
Power requirements include Cold Cranking Amps (CCA) and Reserve Capacity (RC). CCA is essential for performance in cold weather, as it indicates how well the battery can start the engine in low temperatures. A minimum of 500 CCA is recommended for the 2004 WRX. Reserve Capacity measures how long the battery can run on its own if the alternator fails. Aim for a battery with an RC of at least 90 minutes for reliable performance. -
Battery Type:
The two common battery types are Lead-Acid and Absorbent Glass Mat (AGM). Lead-Acid batteries are traditional and cost-effective. AGM batteries, while more expensive, offer better performance, more durability, and are resistant to physical damage. AGM batteries also perform better in extreme temperatures. -
Climate Considerations:
The local climate impacts battery performance. In cold climates, choose a battery with high CCA for reliable starting. In hot climates, a battery with better heat resistance is essential to prevent premature failure. -
Warranty:
A warranty provides peace of mind. Battery warranties typically range from 2 to 5 years. A longer warranty indicates manufacturer confidence in the product’s lifespan and performance. -
Brand Reputation:
Selecting a tool from a well-regarded brand can impact battery longevity and reliability. Brands such as Optima, Interstate, and Duralast are often recommended for their performance and reliability in automotive applications. Customer reviews and recommendations from automotive professionals can guide your choice.
In conclusion, consider these factors carefully to choose the battery that best matches your 2004 WRX’s requirements and conditions.
How Does the Type of Battery Impact the Performance of a 2004 WRX?
The type of battery impacts the performance of a 2004 WRX significantly. A high-quality battery provides reliable starting power and maintains electrical system stability. This stability ensures the engine runs efficiently and all electrical components work correctly. The Battery’s cold cranking amps (CCA) affect starting in cold weather. A battery with a higher CCA performs better under such conditions. Additionally, a maintenance-free battery reduces the risk of corrosion and ensures longevity. A weak or low-quality battery may lead to starting issues and affect performance under load. Overall, selecting the right battery enhances reliability and overall vehicle performance in a 2004 WRX.
What Steps Are Involved in Installing a Battery in a 2004 WRX?
The steps involved in installing a battery in a 2004 WRX are straightforward and can be summarized as follows:
- Gather tools and materials.
- Open the hood and locate the battery.
- Disconnect the negative terminal.
- Disconnect the positive terminal.
- Remove any securing straps or brackets.
- Lift out the old battery.
- Place the new battery in position.
- Reconnect the securing straps or brackets.
- Connect the positive terminal.
- Connect the negative terminal.
- Close the hood and check the installation.
These steps provide a comprehensive overview of the process. Different perspectives on battery installation can highlight various aspects. For instance, some may believe in professional installation for safety. Others may advocate DIY due to cost-saving benefits. Additionally, opinions on battery brand quality may differ, with some preferring premium options for performance, while others may focus on budget-friendly choices.
-
Gathering tools and materials:
Installing a battery in a 2004 WRX requires specific tools. Common tools include a ratchet and socket set, wrenches, and gloves. Also, a new battery that meets the vehicle’s specifications is essential. -
Opening the hood and locating the battery:
The battery is located in the engine compartment on the driver’s side. Knowing its precise location is crucial for efficient installation. -
Disconnecting the negative terminal:
Disconnecting the negative terminal first prevents potential electrical shorts. Using a wrench, loosen the clamp and carefully remove the negative cable. This is essential for safety during the installation process. -
Disconnecting the positive terminal:
After the negative terminal, disconnect the positive terminal. This terminal can pose a higher risk for sparks and shorts, so it must be managed similarly to the negative terminal. -
Removing any securing straps or brackets:
Typically, the battery is secured with straps or brackets. Loosening these allows for the safe removal of the battery. Each vehicle may have different securing mechanisms. -
Lifting out the old battery:
The old battery can be heavy. It is crucial to lift it carefully and to avoid dropping it, as this could cause damage to the vehicle or personal injury. -
Placing the new battery in position:
Position the new battery in the same orientation as the old one. Ensuring correct placement is essential for proper connections and stability. -
Reconnecting the securing straps or brackets:
Once the new battery is in place, secure it with the original straps or brackets. This step prevents the battery from moving while driving. -
Connecting the positive terminal:
Next, connect the positive terminal. Placing it on the new battery should follow the correct polarity. Tighten the connection securely to ensure good contact. -
Connecting the negative terminal:
Finally, reconnect the negative terminal. This completes the battery installation process. -
Closing the hood and checking the installation:
Close the hood and check all connections. A simple visual inspection ensures everything is in place. Starting the vehicle confirms that the installation was successful.
Each of these points highlights specific actions necessary for a successful battery installation in a 2004 WRX. Following these procedures helps ensure safety and reliability for the vehicle.
What Common Battery Issues Can Occur in a 2004 WRX and How Can You Troubleshoot Them?
The common battery issues that can occur in a 2004 WRX include battery drain, poor connections, and battery failure. Troubleshooting these issues involves checking the battery health, inspecting connections, and testing the charging system.
- Battery drain
- Poor connections
- Battery failure
To troubleshoot battery issues effectively, it is essential to understand each problem.
-
Battery Drain: Battery drain occurs when the battery loses its charge, preventing the vehicle from starting. This issue can arise due to electrical components like lights or radios remaining on. Regular inspections can help identify any unintended power draws. According to a 2021 study by the Automotive Engineering Institute, nearly 30% of battery-related issues stem from such drain.
-
Poor Connections: Poor connections involve corrosion or loose terminals that disrupt the electrical flow between the battery and vehicle components. This can lead to intermittent power, causing difficulty in starting the engine. A study by the Society of Automotive Engineers in 2020 highlighted that maintaining clean and tight battery connections can improve vehicle reliability by 15%.
-
Battery Failure: Battery failure refers to a total loss of battery capacity over time, often due to age or extreme weather conditions. Batteries typically last 3 to 5 years, and failure can lead to a non-starting vehicle. The American Automobile Association (AAA) has reported that batteries older than three years are more likely to fail during extreme temperatures. Regular battery testing can help anticipate such failures.
Overall, regular maintenance and timely inspections of the battery and its connections can significantly reduce these common issues in a 2004 WRX.
Related Post: