Group Size 35 vs Group Size 48: Key Differences and Which Battery Is Right for Your Vehicle

Last Updated Feb 16, 2025
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A battery pet group size of 35 offers more personalized care and reduces competition for resources, leading to lower stress levels and improved overall health. Increasing the group size to 48 can enhance social interaction but may also escalate aggression and territorial disputes, potentially impacting animal welfare. Optimal group size balances social needs with space availability to maintain a healthy and stress-free environment.

Table of Comparison

Feature Group Size 35 Group Size 48
Dimensions (L x W x H) 9.1 x 6.9 x 7.5 inches 10.3 x 6.8 x 7.9 inches
Cold Cranking Amps (CCA) 550 - 620 Amps 600 - 750 Amps
Reserve Capacity (RC) 90 - 100 minutes 95 - 110 minutes
Voltage 12 Volts 12 Volts
Weight 20 - 25 lbs 30 - 38 lbs
Typical Vehicles Compact cars, Small SUVs Mid-size cars, Light trucks, SUVs

Overview of Battery Group Sizes: 35 vs 48

Group Size 35 and Group Size 48 batteries differ primarily in dimensions and power capacity, with Group 35 measuring approximately 9.06 x 6.88 x 8.88 inches and Group 48 (also known as H6) at about 12.06 x 6.88 x 7.56 inches. Group 48 batteries typically offer higher cold-cranking amps (CCA) and reserve capacity, making them suitable for larger vehicles or those requiring more electrical power. Choosing between Group 35 and Group 48 depends on vehicle specifications and power demands, with Group 35 more common in mid-sized cars and Group 48 favored for trucks and SUVs.

Key Differences Between Group Size 35 and 48 Car Batteries

Group Size 35 car batteries are more compact, typically measuring around 9.06 x 5.06 x 8.88 inches, while Group Size 48 batteries are larger, approximately 12.06 x 6.94 x 7.5 inches, offering higher cold cranking amps (CCA) and amp-hour ratings. Group Size 48 batteries are commonly used in vehicles with larger engines and higher power demands, providing improved starting power and longer lifespan compared to the more compact Group Size 35. The key differences in terminal layout and mounting styles also affect compatibility with specific vehicle models, making it essential to match the battery group size with the manufacturer's specifications.

Compatibility: Vehicles Suited for Group 35 vs Group 48

Group Size 35 batteries are commonly compatible with smaller to mid-sized vehicles, including compact cars and some small SUVs, due to their compact dimensions and moderate power output. Group Size 48 batteries, with larger capacity and higher reserve power, are better suited for mid-sized to full-sized vehicles, including sedans and larger SUVs, requiring more robust starting power and longer durability. Compatibility depends on vehicle specifications such as battery tray size, terminal configuration, and electrical system demands, which vary substantially between Group 35 and Group 48 applications.

Physical Dimensions Comparison: Group 35 vs Group 48

Group Size 35 batteries typically measure around 9.1 x 6.9 x 7.5 inches, making them more compact and lighter, suitable for smaller vehicles. In contrast, Group Size 48 batteries usually have dimensions close to 12.0 x 6.9 x 7.5 inches, offering a larger physical footprint and greater capacity for mid-sized to larger vehicles. The increased length of Group 48 batteries translates to higher power output and longer life span compared to the more space-efficient Group 35.

Cold Cranking Amps (CCA): Group 35 vs Group 48 Performance

Group Size 35 batteries typically offer around 550 to 650 Cold Cranking Amps (CCA), making them suitable for smaller engines and moderate climates. Group Size 48 batteries provide higher CCA ratings, often ranging from 700 to 800, delivering stronger starting power in cold weather conditions. The increased CCA capacity in Group 48 batteries ensures better engine starts in freezing temperatures, especially for larger vehicles or those operating in harsh winter environments.

Reserve Capacity: Group 35 Versus Group 48

Group Size 48 batteries typically offer a higher reserve capacity compared to Group Size 35, providing longer power availability during engine-off conditions. The increased reserve capacity in Group 48 batteries supports extended accessory usage and enhances vehicle reliability in demanding environments. Selecting a battery with an optimal reserve capacity ensures sufficient energy storage for starting power and auxiliary loads.

Longevity and Durability: Which Battery Lasts Longer?

Group Size 35 batteries typically offer higher cold-cranking amps (CCA) and a more compact design, making them suitable for vehicles requiring strong starting power but moderate longevity. Group Size 48 batteries often provide greater amp-hour capacity and a larger reserve capacity, translating to enhanced durability and longer service life under consistent use. Choosing between Group Size 35 and Group Size 48 batteries depends on the balance between required starting power and desired longevity, with Group Size 48 generally lasting longer due to its higher capacity and robust construction.

Price Differences: Group Size 35 vs Group Size 48

Group Size 35 batteries typically cost less due to their smaller size and lower amp-hour capacity compared to Group Size 48 batteries. Group Size 48 offers higher cold cranking amps (CCA) and longer lifespan, justifying its higher price point for vehicles requiring more power. Price differences range approximately from $20 to $40, with Size 48 batteries often favored for trucks and larger SUVs needing enhanced performance.

Installation Considerations for Group 35 and 48 Batteries

Group Size 35 batteries are more compact, making them ideal for vehicles with limited engine bay space and simplified installation processes. Group Size 48 batteries, being larger and heavier, require more room and careful handling during installation, often necessitating additional mounting hardware. Both sizes demand secure terminal connections to avoid corrosion and ensure optimal battery performance over time.

How to Choose the Right Battery Group Size for Your Vehicle

When choosing the right battery group size for your vehicle, focus on compatibility with your car's make and model, as Group Size 35 and Group Size 48 differ in dimensions, terminal locations, and amp-hour capacity. Group Size 35 batteries are typically suited for compact and mid-sized vehicles, offering a smaller footprint and adequate power output, while Group Size 48 batteries are larger with higher cold cranking amps, ideal for vehicles with greater power demands. Always consult the vehicle owner's manual or manufacturer specifications to ensure the battery fits securely and meets the electrical requirements of your vehicle.

Group Size 35 vs Group Size 48 Infographic

Group Size 35 vs Group Size 48: Key Differences and Which Battery Is Right for Your Vehicle


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The information provided in this document is for general informational purposes only and is not guaranteed to be complete. While we strive to ensure the accuracy of the content, we cannot guarantee that the details mentioned are up-to-date or applicable to all scenarios. Topics about Group Size 35 vs Group Size 48 are subject to change from time to time.

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