Best Battery For Subaru Crosstrek: Essential Guide

The best battery for your Subaru Crosstrek is typically a Group Size 24F or 35, offering a balance of power, longevity, and fit. Choosing one involves considering cold-cranking amps (CCA) suited to your climate and brand reliability. This guide simplifies finding the right battery to keep your Crosstrek running smoothly.

Your Subaru Crosstrek Battery: A Beginner’s Essential Guide

Is your Subaru Crosstrek’s engine making a funny noise when you try to start it? Or perhaps the lights seem a bit dim lately? These could be signs that your car battery is getting old and needs attention. Replacing a car battery might sound daunting, but it’s a common task that many car owners can handle with the right guidance. Think of your car battery like the heart of your vehicle; it provides the initial jolt of power to get everything else running. When it’s weak, your car can struggle to start, and other electrical components might not work correctly. This guide is here to make understanding and choosing the best battery for your Subaru Crosstrek simple and stress-free. We’ll break down what you need to know, from battery types to installation tips, so you can feel confident about your choice. Let’s get your Crosstrek powered up and ready for your next adventure!

Understanding Your Subaru Crosstrek’s Battery Needs

Every car needs a specific type of battery to operate correctly. For your Subaru Crosstrek, this usually comes down to its size and power requirements. Don’t worry if you’ve never paid attention to battery sizes before; it’s easier than it sounds.

Battery Group Sizes Explained

Car batteries are categorized by “group sizes.” These numbers and letters, like “24F” or “35,” tell you about their physical dimensions (how big they are) and terminal placement (where the positive and negative posts stick out). This is crucial because even if a battery has enough power, it won’t fit if it’s the wrong size or shape, or if the cables can’t reach the terminals.

Common Crosstrek Battery Sizes: For most Subaru Crosstreks, you’ll find that Group Size 24F and Group Size 35 are the most common. The “F” in 24F means the terminals are reversed compared to a standard Group 24 battery, which is important for cable fitment.
Why Size Matters: A battery must fit securely in its tray. If it’s too big, it could move around, potentially causing damage. If it’s too small, it might not be held in place properly. Crucially, the battery cables (the thick wires connecting to the battery) need to be able to reach the correct terminals without being stretched too tightly or needing to be rerouted in a way that could cause wear.

Key Battery Specifications You Need to Know

Beyond just the size, batteries have specifications that tell you how powerful they are and how well they’ll perform, especially in different weather conditions.

Cold Cranking Amps (CCA): This is a measure of the battery’s power to start your engine in cold weather. It’s the number of amps a battery can deliver at 0°F (-18°C) for 30 seconds while maintaining a minimum voltage. If you live in a cold climate, you’ll want a higher CCA rating. For many Subaru Crosstreks, a CCA rating between 400 and 600 is usually sufficient, but always check your owner’s manual or the label on your old battery for the manufacturer’s recommendation.
Reserve Capacity (RC): This tells you how long the battery can power essential vehicle functions if your alternator fails. It’s measured in minutes. A higher RC means your battery can provide backup power for a longer period.
Voltage: Most car batteries are 12-volt systems. This is a standard you’ll see on virtually all replacement car batteries.

Top Battery Picks for the Subaru Crosstrek

When it comes to choosing the “best” battery, it’s a balance between needs, budget, and reputable brands. While specific models can change, certain brands consistently offer reliable options for the Subaru Crosstrek. Here are a few types and brands to consider, keeping in mind you’ll want to match the group size (24F or 35) and ensure adequate CCA for your area.

Premium Options (Longer Life, Higher Performance)

These batteries often come with longer warranties and are built with advanced technology for superior performance and durability. They are usually a bit more expensive but can offer better value over time.

Optima YellowTop (DH6 or similar, depending on specific year/model): Known for their deep-cycle capabilities and vibration resistance, Optima batteries are excellent for vehicles with higher power demands or those that sit for periods. While often a premium choice, their durability is a major plus.
Odyssey Performance Series (PC1220LMJ or similar): Another top-tier brand, Odyssey batteries offer high CCA and excellent deep-cycle performance. They are built to withstand extreme temperatures and are highly reliable.

Mid-Range/Best Value Options

These batteries strike a great balance between price, performance, and longevity. They are excellent choices for most Crosstrek owners.

ACDelco Professional (group size 24F or 35): ACDelco offers robust batteries that are a reliable choice. They provide good CCA and generally have a solid warranty. Many automotive professionals trust ACDelco for consistent performance.
DieHard Gold/Platinum (group size 24F or 35): DieHard batteries, often found at Advance Auto Parts, are well-regarded for their strong performance and durability. The Gold series offers a good balance and the Platinum series often comes with a longer warranty.
Interstate Batteries (MTX24F, MTP35, etc.): Interstate is a widely recognized and trusted brand. They offer a range of batteries, and their models intended for automotive starting often provide excellent CCA and a decent warranty.

Budget-Friendly Options

If you’re looking for a more affordable replacement, these options can still get the job done reliably, though they might have shorter warranties or slightly lower performance metrics compared to premium brands.

EverStart Maxx (Walmart): These batteries are a popular budget choice. They often meet or exceed OEM specifications and come with a reasonable warranty, making them a practical solution for many drivers.
Duralast Gold (AutoZone): Duralast batteries offer good value. The Gold series typically provides solid CCA ratings and a good warranty for the price point.

Comparing Battery Types: AGM vs. Traditional Flooded Lead-Acid

When you start looking at batteries, you’ll likely see two main types: traditional flooded lead-acid (FLA) batteries and Absorbed Glass Mat (AGM) batteries. While both have their place, AGM batteries are increasingly becoming the preferred choice for modern vehicles like the Subaru Crosstrek.

Traditional Flooded Lead-Acid (FLA) Batteries

These are the classic car batteries you’ve probably seen for decades. They have “vents” on top where, during charging and discharging, a small amount of hydrogen gas can escape. The electrolyte (a mix of sulfuric acid and water) is in a liquid form, covering lead plates.

Pros:

Generally less expensive upfront.
Widely available and familiar.

Cons:

More susceptible to vibration damage.
Can leak acid if tipped or damaged.
Less resistant to deep discharge cycles.
Require occasional maintenance (checking electrolyte levels, though “maintenance-free” versions are common).

Absorbed Glass Mat (AGM) Batteries

AGM batteries are considered a more advanced technology. Instead of liquid electrolyte, they use a special type of fiberglass mat to absorb and hold the electrolyte. This design has several benefits:

Pros:

Highly Vibration Resistant: The tightly packed internal structure makes them very durable.
Spill-Proof and Leak-Proof: The electrolyte is suspended in the mat, so they can be mounted in various positions (though upright is still recommended) and are much safer if accidentally tipped.
Faster Recharging: AGM batteries can accept a charge more quickly than flooded batteries.
Better Deep Discharge Recovery: They handle being drained and recharged much better, which is good for vehicles with lots of electronics or if you sometimes forget to turn off lights.
No Gassing: They are virtually sealed and don’t release significant gases, making them safer to use in enclosed spaces.

Cons:

Typically more expensive than flooded lead-acid batteries.
Require a compatible charger. Using an older, standard charger on an AGM battery can shorten its lifespan or even damage it.

Recommendation for Subaru Crosstrek: While your Crosstrek might have come with a traditional flooded battery, upgrading to an AGM battery can offer better performance, longer life, and enhanced safety. If your vehicle has features like advanced start-stop technology or a high-demand electrical system, an AGM battery is often recommended or even required.

How to Read Your Current Battery’s Specifications

Before you head out to buy a new battery, it’s a good idea to check your current one. This will give you the exact group size and potentially the recommended CCA that the manufacturer had in mind for your specific Subaru Crosstrek.

Look for a label directly on the battery. It typically includes:

Group Size: This will be prominently displayed, likely as “24F” or “35”.
Terminal Configuration: Sometimes indicated by “F” for reversed terminals, or visually by checking which post is positive (+) and which is negative (-).
CCA Rating: The Cold Cranking Amps number will be printed on the label.
Brand Name: You might see names like Subaru, Panasonic, or others depending on the original equipment manufacturer (OEM).

If the label is too faded or damaged to read, don’t worry! Your Subaru owner’s manual is the best place to find this information. You can also use online battery finders provided by major battery retailers (like AutoZone, Advance Auto Parts, O’Reilly Auto Parts) by simply entering your car’s year, make, and model. These tools will show you compatible battery sizes and types.

Tools You’ll Need for Battery Replacement

Replacing a car battery is a straightforward DIY job, but having the right tools makes it much easier and safer. Here’s what you’ll generally need:

Socket Wrench Set or Wrenches: You’ll need a socket or wrench to loosen and remove the battery terminal clamps (usually 10mm or 13mm) and the bracket that holds the battery in place (size can vary, often 10mm, 12mm, or 13mm).
Battery Terminal Cleaner Brush: This handy brush helps clean corrosion off the battery terminals and the inside of the cable clamps for a good electrical connection.
Gloves: Car batteries contain sulfuric acid, which is corrosive. Wearing sturdy gloves protects your hands.
Safety Glasses: Always protect your eyes from potential sparks or acid splashes.
Rag or Paper Towels: For wiping up any residue.
Anti-Corrosion Grease/Spray (Optional but Recommended): A thin layer applied to the terminals after installation can help prevent future corrosion.
New Battery: Make sure you have your chosen replacement warmed up and ready!

Step-by-Step: How to Replace Your Subaru Crosstrek Battery

Safety first! Always work in a well-ventilated area and ensure your car is turned off and the parking brake is engaged. Remember, the order in which you disconnect and reconnect terminals is critical to prevent short circuits.

Disconnecting the Old Battery

Locate the Battery: In most Subaru Crosstreks, the battery is under the hood, typically on the passenger side.
Identify Terminals: Find the positive (+) and negative (-) terminals. The positive terminal usually has a red cover or a “+” symbol.
Disconnect the Negative Terminal FIRST: Using your socket wrench or appropriate tool, loosen the nut on the clamp for the negative (-) terminal. Once loose, carefully wiggle and lift the cable off the terminal post. Tuck it away so it can’t accidentally touch the battery post.
Disconnect the Positive Terminal SECOND: Now, do the same for the positive (+) terminal. Loosen the nut and remove the cable from the post.
Remove the Battery Hold-Down Bracket: Most batteries are secured by a metal bracket at the base. You’ll need to find the bolt(s) holding this bracket and remove them with your wrench. Keep track of any nuts or bolts!
Lift Out the Old Battery: Batteries are heavy! Use both hands to lift the old battery straight up and out of the battery tray. Be careful not to strain your back. Place it somewhere safe, away from children or pets.

Installing the New Battery

Now it’s time to put the new battery in. It’s essentially the reverse of removal, but with a very important order for connecting terminals.

Clean Battery Tray and Terminals: Before placing the new battery in, check the battery tray for debris. Use your battery terminal cleaner brush to clean any corrosion from the cable clamps.
Place the New Battery: Carefully lower the new battery into the tray, ensuring it’s oriented correctly so the positive and negative terminals align with where the corresponding cables will reach.
Secure the Hold-Down Bracket: Reinstall the bracket that holds the battery in place and tighten its bolt(s). Make sure the battery feels firmly secured and doesn’t rock.
Connect the Positive Terminal FIRST: Place the positive (+) cable clamp onto the positive terminal post of the new battery. Tighten the nut firmly.
Connect the Negative Terminal SECOND: Now, place the negative (-) cable clamp onto the negative terminal post. Tighten the nut firmly.
Apply Anti-Corrosion Grease (Optional): A thin layer of anti-corrosion grease or spray on the terminals and clamps can help prevent future issues.
Final Check: Double-check that both terminals are tight and that the battery is secure in its tray. Ensure no tools are left in the engine bay.

Testing the New Battery

Start your car! The engine should turn over smoothly and without hesitation. Turn on the headlights, radio, and AC to ensure everything electrical is working correctly. If you notice any warning lights or unusual behavior, turn off the car and re-check all connections.

Recycling Your Old Car Battery

Car batteries contain lead and sulfuric acid, which are harmful to the environment if disposed of improperly. However, they are also highly recyclable.

Where to Recycle:

Retailers: Most places that sell car batteries (auto parts stores, big box stores like Walmart) will accept your old battery for recycling, often giving you a credit or simply taking it off your hands for free. This is usually the easiest option.
Local Recycling Centers: Many municipal or county recycling centers have designated drop-off points for automotive batteries.
Mechanics: Your local mechanic is also a good place to inquire about battery recycling.

When you buy a new battery, you’re often charged a “core charge” or deposit. This deposit is refunded to you when you return your old battery, encouraging proper recycling. According to the Environmental Protection Agency (EPA), over 99% of lead-acid batteries are collected for recycling, with the lead and plastic being used to make new batteries and other products.

Battery Maintenance Tips for Longevity

Even the best battery can have its lifespan shortened by neglect. A little regular care can go a long way in keeping your Subaru Crosstrek’s battery healthy.

Keep Terminals Clean: Periodically check the battery terminals. If you see white or bluish powdery corrosion, clean it off with a wire brush and a mixture of baking soda and water. A thin coat of dielectric grease or anti-corrosion spray after cleaning can prevent future buildup.
Ensure Secure Fitment: A loose battery can be damaged by vibrations. Make sure the hold-down bracket is snug.
Avoid Deep Discharges: Try not to leave lights, the radio, or other accessories on with the engine off for extended periods, as this can drain the battery excessively. If you have a long drive after a period of disuse, it’s good for the battery.
Protect from Extreme Temperatures: While car batteries are designed for varying temperatures, extreme heat and cold can shorten their life. Ensure your battery is properly located and secured.
Regular Driving: Your alternator recharges the battery while you drive. If your Crosstrek is used for very short trips frequently, the battery might not get fully recharged, progressively weakening it. Try to take it for