What Size Battery Does a Craftsman Riding Lawn Mower Take?

The warm sun is shining, the birds are singing, and your lawn is calling. It’s time to fire up your Craftsman riding mower and get those blades spinning! But wait, what if your trusty steed refuses to start? Perhaps your battery is the culprit. This article will explore everything you need to know about finding the right battery for your Craftsman riding mower, from identifying your specific model to understanding battery types and sizes. We’ll also delve into troubleshooting tips and common battery problems, ensuring you’re back on track to a perfectly manicured lawn in no time.

Quick Answer: The battery size for a Craftsman riding lawn mower varies greatly depending on the model. You’ll need to identify your specific model and then consult the owner’s manual or contact Craftsman customer support for the correct battery size.

Identifying Your Craftsman Riding Mower Model

The first step in finding the right battery is identifying your specific Craftsman riding mower model. This information is usually located on a sticker or plate attached to the mower itself. Look for a serial number, model number, or other identifying information. Here’s where to look:

  • Under the seat: The underside of the seat often has a sticker with model information.
  • On the frame: Check the frame near the engine or steering wheel for a data plate.
  • On the battery: The battery itself may have a label with the manufacturer and model number.

Once you’ve found the model number, you can use it to search for your mower’s specifications online or in your owner’s manual. If you can’t locate the model number, you can take a clear picture of the mower and contact Craftsman customer support directly.

Types of Batteries Used in Riding Mowers

Most Craftsman riding mowers use either a lead-acid battery or a lithium-ion battery. Here’s a brief comparison:

Lead-Acid Batteries:

  • Pros: Affordable, readily available, relatively long lifespan (5-7 years).
  • Cons: Heavier, requires regular maintenance (checking water levels, charging), prone to spills.

Lithium-Ion Batteries:

  • Pros: Lightweight, longer run time, no maintenance required, less prone to spills.
  • Cons: More expensive, may have a shorter lifespan (3-5 years) than lead-acid batteries.

Understanding Battery Sizes

Battery sizes are typically described using the group size designation, followed by a terminal location code.

Group Size: This refers to the physical dimensions of the battery, including its length, width, and height. Common group sizes for riding mowers include:

  • Group 24: This is a standard size for riding mowers, offering a good balance of power and capacity.
  • Group 27: Larger than Group 24, providing more power and capacity.
  • Group 31: Even larger, offering the most power and capacity but may be too large for some mowers.

Terminal Location: This indicates the position of the positive and negative terminals on the battery. Common terminal locations include:

  • Top Post: Terminals located on the top of the battery.
  • Side Post: Terminals located on the side of the battery.

Choosing the Right Battery for Your Craftsman Mower

1. Consult Your Owner’s Manual: Your owner’s manual is the most reliable source for the correct battery size and type for your specific Craftsman riding mower model. Look for a section on battery replacement or specifications.

2. Check the Existing Battery: If you have a working battery, note its group size and terminal location.

3. Consider Your Needs: Think about your usage patterns and how often you use your mower. If you mow frequently or have a large lawn, a higher capacity battery might be a better choice.

4. Shop for a Compatible Battery: Once you know the correct battery size and type, you can purchase a replacement battery from a local hardware store, auto parts store, or online retailer.

Troubleshooting Battery Problems

If your Craftsman riding mower won’t start, the battery might be the culprit. Here are some common battery problems and solutions:

1. Battery Dead: The battery may be completely discharged. Try charging the battery for several hours using a battery charger suitable for the battery type.

2. Battery Connections: Loose or corroded battery terminals can prevent current flow. Clean the terminals with a wire brush and tighten the connections.

3. Battery Age: If your battery is several years old, it may be reaching the end of its lifespan. Consider replacing the battery.

4. Battery Drainage: A faulty starter, electrical system issues, or leaving the lights on can drain the battery. Inspect your mower for any electrical problems.

5. Battery Terminal Corrosion: Corrosion can build up on the battery terminals, preventing a good electrical connection. Clean the terminals with a wire brush and baking soda solution.

6. Battery Freeze: If the battery is exposed to extreme cold temperatures, it may freeze and become damaged. Keep your mower in a garage or covered area during the winter.

Battery Maintenance Tips

  • Regularly check the battery water levels (if using a lead-acid battery). Add distilled water as needed to maintain the proper level.
  • Charge the battery fully before storing it for extended periods.
  • Keep the battery terminals clean and free of corrosion.
  • Avoid deep discharges as they can shorten the battery’s lifespan.
  • Replace the battery after 3-5 years (for lithium-ion) or 5-7 years (for lead-acid) for optimal performance.


Knowing the right battery size for your Craftsman riding mower is crucial for a smooth and efficient mowing experience. By identifying your specific model, understanding battery types, and following the tips outlined in this article, you can ensure your mower is always ready to tackle your lawn with ease. Remember, a healthy battery is essential for a happy and productive mowing season. So, grab your tools, get your mower battery in top shape, and enjoy a beautifully manicured lawn!


1. What types of batteries are typically used in Craftsman riding mowers?

Craftsman riding mowers generally use 12-volt lead-acid batteries. These batteries are known for their durability, affordability, and consistent performance. They are also readily available and easy to replace. However, if you’re looking for a longer lifespan and lighter weight, consider a lithium-ion battery, though these are usually more expensive.

Keep in mind that different models may require different battery sizes and specifications. Consult your mower’s owner’s manual for specific details on the battery type, size, and recommended amperage.

2. How do I know what size battery my Craftsman riding mower needs?

The best way to determine the correct battery size for your Craftsman riding mower is to refer to the owner’s manual. It will provide detailed information about the required battery specifications, including voltage, amperage, and dimensions. You can also find this information on the battery label itself, if the previous battery is still accessible.

If you’re unsure or cannot find the manual, you can contact Craftsman customer service or a local lawn mower repair shop for assistance. They can help you identify the right battery size based on your mower’s model number or serial number.

3. Can I use a different size battery in my Craftsman riding mower?

While it’s tempting to use a different size battery, it’s not recommended. Using a battery with a lower amperage can lead to reduced starting power and performance, while a higher amperage battery may not fit correctly or cause damage to your mower’s electrical system.

Always stick to the recommended battery size and specifications specified in your mower’s manual. If you’re considering a battery upgrade, consult a qualified mechanic or electrician to ensure compatibility.

4. How long does a Craftsman riding mower battery typically last?

The lifespan of a Craftsman riding mower battery depends on several factors, including usage, maintenance, and environmental conditions. A properly maintained lead-acid battery can last for 3 to 5 years. However, extreme temperatures, overcharging, and deep discharges can shorten its lifespan.

Lithium-ion batteries offer a longer lifespan, typically lasting 5 to 7 years or more. They also require less maintenance and are less prone to damage from extreme temperatures.

5. How do I maintain my Craftsman riding mower battery?

Proper maintenance is crucial for prolonging the life of your Craftsman riding mower battery. Keep the battery terminals clean and free from corrosion. Regularly check the electrolyte level in a lead-acid battery and add distilled water if necessary.

Ensure that the battery is fully charged after each use and avoid leaving it in a discharged state for extended periods. Store the battery in a cool, dry place during winter months.

6. When should I replace my Craftsman riding mower battery?

It’s time to replace your Craftsman riding mower battery when it starts to exhibit signs of weakness, such as slow cranking, difficulty starting, or a noticeable decrease in battery life.

Other indicators include bulging or leaking of the battery case, corrosion on the terminals, and frequent need for charging. Replacing the battery before it completely fails will help prevent damage to your mower’s electrical system.

7. Where can I buy a replacement battery for my Craftsman riding mower?

Replacement batteries for Craftsman riding mowers are readily available at various retailers, both online and offline. You can find them at big box stores like Home Depot, Lowe’s, and Walmart, as well as online retailers such as Amazon and eBay.

When purchasing a battery, ensure it matches the specifications listed in your owner’s manual or on the old battery label. You can also consult a local lawn mower repair shop or dealership for assistance in finding the correct battery.

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