Best Group 65 Batteries: Your Go-to Source for Reliable Automotive Power

When it comes to your vehicle’s performance, selecting the right battery is crucial. The battery not only starts your engine but also powers all the electrical components in your vehicle. Today, we’ll focus on one of the most popular battery sizes available: the Group 65 battery. This guide will provide you with all the necessary information about Group 65 batteries, including their specifications, advantages, and maintenance tips.

What is a Group 65 Battery?

A Group 65 battery is a specific battery size and type designed for various automotive applications. These batteries are known for their high cranking amps and reserve capacity, making them an ideal choice for many American-made cars, trucks, and SUVs, as well as diesel engines.


Battery size and dimensions: Group 65 batteries measure approximately 12″ in length, 7.5″ in width, and 7.5″ in height.

Power and capacity: These batteries typically have a capacity of 650-750 cold-cranking amps (CCA) and a reserve capacity of 130-150 minutes.

Common applications and compatible vehicles

American-made cars, trucks, and SUVs: Group 65 batteries are commonly found in vehicles such as Ford F-Series, Chevrolet Silverado, and Dodge Ram trucks.

Diesel engines: Due to their high cranking power, Group 65 batteries are also suitable for diesel engines that require more power during startup.

Advantages of Group 65 Batteries

High cranking amps for reliable starting power: Group 65 batteries provide the necessary power to start even the most demanding engines.

Increased reserve capacity for energy-hungry applications: These batteries can handle additional electrical loads from accessories without compromising performance.

Durable construction and maintenance-free designs: Many Group 65 batteries are built to last and require minimal maintenance.

Wide compatibility with a range of vehicles: Group 65 batteries are suitable for a variety of American-made vehicles and diesel engines.

Our Recommendations of Top 3 Group 65 Battery Reviews

1. Odyssey Battery ODX-AGM65 Extreme Series AGM Battery

  • Brand: Odyssey Battery
  • Manufacturer: Odyssey Battery
  • Dimensions: Height: 9.75 Inches Width: 10.5 Inches Length: 14.75 Inches 
  • Weight: 60.0 Pounds

The Odyssey Battery ODX-AGM65 Extreme Series AGM Battery is the perfect battery for your car. It is a high-performance battery that will give you the power and reliability you need.


  • Odyssey Battery ODX-AGM65 Extreme Series AGM Battery is a high-quality battery that is designed for lasting performance.
  • It provides excellent power and reliability for your car or truck.
  • The battery has a long life span and requires little maintenance.
  • It is resistant to vibrations, making it ideal for off-road use.
  • The battery is backed by a solid warranty from Odyssey Batteries.

Our Recommendations

This battery is incredible! It has amazing cranking power and lasts a long time. I’ve had it in my car for over a year and it’s still going strong. I would highly recommend this battery to anyone.


  • Unreal starting power
  • Dualurpose
  • Long service life
  • AGM chemistry
  • Fast shipping


  • No noticeable cons

2. ACDelco Gold 65AGMHRC AGM BCI Group 65 Battery

  • Brand: ACDelco
  • Manufacturer: ACDelco
  • Dimensions: Height: 7.4 Inches Width: 7.5 Inches Length: 11.8 Inches 
  • Weight: 45.8 Pounds

The ACDelco Gold 65AGMHRC 36 Month Warranty High Reserve AGM BCI is a high-quality battery that offers a long warranty and a high reserve capacity. This battery is perfect for those who need a reliable and powerful option to keep their car running.


  • ACDelco batteries are some of the most reliable on the market, and this one comes with a 36-month warranty.
  • The high reserve capacity means that this battery will be able to power your car for longer before needing to be recharged.
  • AGM technology makes this battery more resistant to damage from vibration and heat, meaning it will last longer.
  • BCI certification ensures that this battery meets all the latest safety standards.
  • The compact size makes it easy to install in most cars.

Our Recommendations

The product is great! The customer service was amazing and they were able to answer all of my questions. They even helped me find the right product for my needs. I would definitely recommend this company to anyone.


  • Excellent AGM battery that fits perfectly in a Ford E350 van
  • AC Delco battery is reliable and lasts for about 6 years
  • Battery worked immediately after installation
  • Great value for the price
  • Battery is lightweight and doesn’t have any buildp around the cables


  • No specific dislikes

3. ACDelco Gold 48AGM 36 Month Warranty AGM BCI Group 48

  • Brand: ACDelco
  • Manufacturer: ACDelco
  • Color: Black
  • Dimensions: Height: 7.6 Inches Width: 7.5 Inches Length: 11.9 Inches 
  • Weight: 45.5 Pounds

The ACDelco Gold 48AGM 36 Month Warranty AGM BCI Group 48 battery is a high-quality, long-lasting battery that provides reliable power for your car. This battery has a 36-month warranty and is backed by the ACDelco name, so you can be confident in its performance. The Gold 48AGM is a great choice for those who want a reliable, affordable battery for their car.


  • The product has a 36-month warranty.
  • It is an AGM (Absorbed Glass Mat) battery, which means it is designed to last longer and provide more power than traditional batteries.
  • It is a BCI (Battery Council International) Group 48 battery, meaning it will fit most vehicles on the road today.
  • The product is maintenance-free and does not require adding water or other fluids.
  • ACDelco batteries are backed by over 100 years of experience in the automotive industry.

Our Recommendations

Dear ACDelco, I am writing to tell you how pleased I am with the Gold 48AGM 36 Month Warranty AGM BCI Group 48 battery. This battery is amazing! It has lasted me for 36 months without any issues and it still works like new. I would highly recommend this battery to anyone who is looking for a long-lasting, reliable battery. Thank you for making such a great product!


  • Easy installation
  • Good value for the price
  • Great quality
  • Works well in cold weather
  • Perfect fit for the vehicle


  • Did not fit the vehicle as advertised

What to Consider When Buying the Best Group 65 Battery?

When looking to purchase a new battery, always be sure to read customer reviews that are available online. This will help give you an idea of which batteries are the best on the market and which ones may not be worth your money. Also, keep in mind that different people have different needs, so take the time to find a review that is specific to your situation.

When looking to buy a group 65 battery, it is important to compare prices from different shops and marketplaces. This will ensure that you are getting the best deal on the battery. It is also important to read reviews of the different batteries before making a purchase.

When purchasing a group 65 battery, be sure to research the customer support of the shop or marketplace you are considering. This will help ensure that you have a positive experience and are able to get any questions or concerns you may have addressed in a timely and helpful manner.

When looking to purchase a group 65 battery, it is important to research the reputation of the brand beforehand. This will ensure that you are getting a quality product from a reliable source.

Installing and Maintaining a Group 65 Battery

Pre-installation preparation

Safety measures and precautions: Always wear gloves and goggles, and remove any metal jewelry before handling a battery.

Tools required: You’ll need a wrench, a wire brush, and a battery terminal cleaner.

Installation steps

Removing the old battery: Disconnect the negative cable first, followed by the positive cable. Carefully lift the old battery out of the vehicle.

Cleaning and preparing the battery tray: Use a wire brush and a mixture of baking soda and water to clean any corrosion on the battery tray and terminals. Dry the area thoroughly before proceeding.

Installing the new Group 65 battery: Place the new battery in the tray, ensuring it is properly seated. Reconnect the positive cable first, followed by the negative cable. Make sure the connections are tight and secure.

Maintenance tips for optimal performance and longevity

Regular inspection and cleaning: Check the battery terminals for corrosion periodically, and clean them with a battery terminal cleaner or a mixture of baking soda and water.

Ensuring proper charging: Use a battery charger or maintainer to keep your battery fully charged, especially during periods of infrequent use.

Storing the battery during extended periods of non-use: Disconnect the battery and store it in a cool, dry place to prolong its life.

Is a Group 65 Battery Compatible with a GMC Sierra 1500?

Yes, a Group 65 battery is compatible with a GMC Sierra 1500 according to the gmc sierra 1500 battery specifications. The Group 65 battery is the recommended size for the GMC Sierra 1500 and meets the necessary specifications for reliable performance and fit within the vehicle.

Are Super Start Batteries Comparable to Group 65 Batteries for Automotive Use?

Yes, Super Start batteries are comparable to Group 65 batteries for automotive use. As a reputable super start battery manufacturer, they offer high-quality and reliable batteries for a wide range of vehicles. Their Group 65 batteries are specifically designed to provide excellent performance and durability for automotive applications.

Frequently Asked Questions about Group 65 Batteries

Can I replace a different battery size with a Group 65 battery?

While it may be possible, it’s essential to check your vehicle’s owner’s manual or consult a professional to ensure compatibility and proper fit.

How long do Group 65 batteries typically last?

The lifespan of a Group 65 battery depends on various factors, including usage, maintenance, and climate. However, most batteries can last between 3-5 years.

What is the average cost of a Group 65 battery?

Group 65 batteries can range from $100 to over $250, depending on the brand, model, and features.

How do I determine if my vehicle requires a Group 65 battery?

Consult your vehicle’s owner’s manual or contact a local mechanic or dealer to confirm the correct battery size for your car.

Final Verdict

Choosing the right battery is crucial for your vehicle’s performance and reliability. The Group 65 battery offers numerous advantages, making it an excellent choice for compatible vehicles. By following the installation and maintenance tips outlined in this guide, you can ensure your Group 65 battery will provide dependable power for years to come.

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