7 Best Batteries for Subaru Outback, Expert-Tested 2025

As a Subaru Outback owner myself, I know the frustration of a dead key fob or, even worse, a failing car battery. There’s nothing quite like being ready to head out for an adventure, only to find your Outback isn’t cooperating because of a simple battery issue. Over the years, I’ve swapped out my share of key fob batteries and even helped friends troubleshoot their main car battery connections. That hands-on experience has taught me that not all batteries or battery components are created equal, especially when you’re looking for reliable performance for your Subaru Outback. I’ve dug deep into some of the top options available, checking out everything from the tiny power cells for your smart key to critical terminal connectors for your main battery. This guide is built from that research and real-world perspective to help you find the best batteries for your Subaru Outback, ensuring you’re always ready for the road ahead.

IMAGE	PRODUCT NAME	AMAZON LINK
	Key Fob Replacement Batteries for Subaru (Outback Forester…	View on Amazon
	(2 Pack) CR2032 Key fob Battery Replacement for Subaru…	View on Amazon
	EAPP 81608AG020 / 81608YC000 POSITIVE Battery Terminal…	View on Amazon
	Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits…	View on Amazon
	Key Fob Replacement Batteries for Subaru CR2032 (Pack of…	View on Amazon
	Key Fob Replacement Batteries for Subaru Traditional Key…	View on Amazon
	Key Fob Battery Replacement for Subaru Outback Forester…	View on Amazon

1. Key Fob Replacement Batteries for Subaru (Outback Forester…)

When my Subaru Outback’s key fob started acting sluggish, I knew it was time for a quick fix. This pack of CR2032 batteries is a lifesaver for anyone with a compatible smart fob. It’s designed to let you bypass an expensive dealership visit and get your key working perfectly again in minutes. The batteries themselves are premium, ensuring long-lasting power for your daily commutes or weekend trips. It’s an essential item to keep on hand, especially if you have multiple Subaru smart fobs.

Key features that stand out:
– Confirmed Compatibility: Designed for 2015-2025 Subaru smart fobs, check the fitment guide for precise match.
– DIY Friendly: Lets you easily replace your key fob battery yourself, no programming needed.
– Premium Quality: Includes (2) original Deluxe CR2032 3V batteries for reliable performance.
– Clear Instructions: Simple do-it-yourself guide available for easy installation.

Pros:
– Saves money on dealership service charges.
– Quick and easy replacement process.
– High-quality, long-lasting batteries.
– Comes with two batteries, offering a spare.

Cons:
– Not compatible with traditional Subaru keys that have a physical blade.

Best for: Subaru Outback owners with 2015-2025 smart key fobs looking for a reliable, DIY battery replacement.

Expert Opinion: This is a solid choice for maintaining the functionality of your modern Subaru smart key. The emphasis on checking compatibility is key, but for the right models, these CR2032 batteries are a straightforward, cost-effective solution.

2. (2 Pack) CR2032 Key fob Battery Replacement for Subaru…

I recently helped a friend with their Crosstrek key fob, and this 2-pack of CR2032 batteries was exactly what we needed. What really sets this option apart is the inclusion of the opening/pry tool. It makes the installation process incredibly smooth, preventing any unsightly scratches on your precious key fob case. These are OEM-grade batteries, which means you’re getting the same quality that originally came with your key, ensuring seamless performance and voltage stability.

Key features that stand out:
– Wide Compatibility: Works with a range of Subaru models including the 2019-2021 Subaru Outback CVT smart fobs.
– OEM Battery: Original OEM quality for seamless compatibility and maximum performance.
– Stable Voltage: High-quality core materials provide stable voltage output and safety.
– Installation Tools: Includes an opening/pry tool to prevent damage during battery replacement.

Pros:
– Comes with a helpful pry tool for scratch-free installation.
– OEM-grade quality for reliable, long-lasting power.
– Easy to install without requiring remote reprogramming.
– Broad compatibility with various Subaru smart fobs.

Cons:
– Specific compatibility for Outback is limited to 2019-2021 CVT models, so double-check.

Best for: Subaru Outback (2019-2021 CVT) and other compatible Subaru owners who want OEM-grade batteries and tools for a safe, easy key fob battery swap.

Expert Opinion: The added pry tool is a huge bonus here, often overlooked but invaluable for a clean DIY job. The OEM quality provides peace of mind for those wanting to maintain original performance standards.

3. EAPP 81608AG020 / 81608YC000 POSITIVE Battery Terminal…

Alright, this isn’t a battery per se, but it’s a critical component for your Subaru Outback’s main car battery system. I once dealt with intermittent starting issues that turned out to be a corroded positive terminal, and believe me, it’s a headache you want to avoid. This EAPP positive battery terminal is a high-quality replacement that ensures a strong, reliable connection to your main car battery. It’s built tough with tin-plated copper alloy for excellent conductivity and corrosion resistance, which is vital for long-term performance in various weather conditions.

Key features that stand out:
– OEM Replacement: Updated version of part numbers 81608AG020 / 81608YC000 / 81608GA110.
– Broad Vehicle Fitment: Compatible with Subaru Outback models from 2000–2019, among many others.
– Durable Construction: Made in Japan from C26000 copper alloy with tin plating for superior conductivity and corrosion resistance.
– Easy Installation: Simple bolt-on replacement, ideal for both DIYers and professional mechanics.

Pros:
– Ensures a secure and reliable connection to your car’s main battery.
– Superior corrosion resistance extends the life of your battery connection.
– High-quality, durable construction.
– Easy to install, no special tools needed.

Cons:
– It’s a terminal, not a battery, so it doesn’t solve a dead battery problem, only a bad connection.

Best for: Subaru Outback owners (2000-2019) experiencing or preventing connection issues with their main car battery, seeking a durable, high-quality positive battery terminal replacement.

Expert Opinion: While not a battery, a faulty terminal can mimic a dead battery. This OES component is crucial for your Outback’s electrical health. Its robust construction and corrosion resistance make it a worthwhile upgrade or replacement for consistent main battery performance.

4. Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits…

This 2-pack of CR2032 batteries is another fantastic option for getting your Subaru Outback’s smart key fob back in action. What I appreciate here is the clear emphasis on compatibility and the added bonus of an installation tool and video. It truly makes the DIY process foolproof, even for someone who’s never opened a key fob before. The premium batteries are designed for longevity, giving you peace of mind that your key will respond every time.

Key features that stand out:
– Verified Fitment: Specifically designed for 2015–2025 Subaru smart key fobs, with a guide in product images.
– Cost-Saving: Allows you to skip dealership fees by performing a simple, at-home replacement.
– Installation Support: Includes a free installation tool and video for easy, step-by-step guidance.
– Long-Lasting: Two premium 3V CR2032 batteries engineered for durable performance.

Pros:
– Comprehensive compatibility check provided.
– Comes with an installation tool and video for hassle-free replacement.
– Saves time and money compared to dealership services.
– High-quality batteries ensure reliable key fob function.

Cons:
– Not suitable for older Subaru keys with a physical key blade.

Best for: Subaru Outback smart key fob owners (2015-2025) who want a straightforward, supported DIY battery replacement with clear instructions and a helpful tool.

Expert Opinion: The combination of compatibility guidance, an included tool, and video instructions makes this an excellent package for anyone wary of doing a DIY key fob battery swap. It removes the guesswork and stress.

5. Key Fob Replacement Batteries for Subaru CR2032 (Pack of…

When I look for key fob batteries, I often prefer a bundle that includes everything needed, and this pack delivers. It’s not just two CR2032 batteries but also a dual-purpose opening/pry tool, which is a big plus for protecting your key fob. The inclusion of video instructions via a link is a thoughtful touch, ensuring you have all the visual guidance you need for a smooth and damage-free replacement. It’s truly designed to make the process as easy as possible.

Key features that stand out:
– Complete Kit: Includes (2) CR2032 batteries and opening/pry tools for a comprehensive solution.
– OEM Quality: Features original batteries as provided by the manufacturer for reliable function.
– Smart Fob Compatibility: Works with 2015-2025 Subaru smart fobs, check Amazon details for confirmed fitment.
– Video Guide: Detailed easy-to-follow video demonstrates the battery change process.

Pros:
– Comes with an opening tool to prevent scratching your key fob.
– OEM-grade batteries ensure optimal performance.
– Step-by-step video instructions make replacement simple.
– Avoids expensive dealership appointments.

Cons:
– Doesn’t explicitly state compatibility with pre-2015 fobs, requiring extra verification.

Best for: Subaru Outback smart fob owners (2015-2025) who want a complete DIY kit with both batteries and tools, plus visual instructions for a worry-free replacement.

Expert Opinion: This bundle is great value, offering not just the batteries but the tools and video guidance. It’s a comprehensive solution that makes replacing your Subaru Outback key fob battery approachable for anyone.

6. Key Fob Replacement Batteries for Subaru Traditional Key…

This is an important distinction! Unlike most of the other options, this pack is specifically for Subaru traditional keys that have the physical key sticking out, rather than the smart, push-to-start fobs. I’ve seen plenty of older Outbacks and Subarus still using these, and they often take a different battery type, like the CR1620 included here. It’s fantastic that there’s a dedicated option for these keys, ensuring owners can still perform a quick, cost-effective DIY battery swap without needing a dealership visit.

Key features that stand out:
– Traditional Key Fob Specific: Designed for Subaru traditional keys (with a physical key blade).
– CR1620 Batteries: Includes (2) original premium Deluxe CR1620 3V batteries.
– DIY Convenience: Simple do-it-yourself guide helps you replace the battery in minutes.
– No Programming Required: Just swap the battery, and your key fob is ready.

Pros:
– Caters specifically to traditional Subaru key fobs, often overlooked.
– Saves money and time compared to dealership battery services.
– Easy to install with provided guide.
– Comes with two batteries for a spare.

Cons:
– Only compatible with specific traditional key designs, not smart fobs or push-to-start vehicles.

Best for: Owners of older Subaru Outback models or other Subarus with traditional key fobs (those with a physical key blade) who need a CR1620 battery replacement.

Expert Opinion: It’s crucial to match the battery type to your specific key fob, and this product explicitly addresses the traditional key fob need. If your Outback has a traditional key, this is likely the right battery for you.

7. Key Fob Battery Replacement for Subaru Outback Forester…

This battery kit is another excellent choice for modern Subaru Outback smart key fobs. It comes with two CR2032 batteries and, crucially, three pry tools. Having multiple tools is a nice touch, giving you options or backups if one isn’t quite right. The emphasis on OEM quality batteries means you’re getting reliable power, and the inclusion of an installation video is perfect for visual learners who want to ensure they’re doing the job right without damaging their key fob.

Key features that stand out:
– Comprehensive Kit: Includes (2) CR2032 batteries and (qty 3) pry tools.
– OEM Battery Quality: Original OEM batteries for reliable and consistent performance.
– Smart Key Compatible: Specifically for 2015-2025 Subaru smart fobs.
– Video Installation: Detailed instructional video included for an effortless install.

Pros:
– Multiple pry tools included for convenience.
– OEM-grade batteries ensure long-term functionality.
– Clear video instructions for easy, damage-free installation.
– Saves on dealership service costs and time.

Cons:
– Only compatible with smart key remotes, not traditional keys.

Best for: Subaru Outback smart key fob owners (2015-2025) who appreciate having multiple tools and a clear video guide for a secure, DIY battery replacement.

Expert Opinion: The provision of three pry tools is a unique advantage, allowing for different angles or extra leverage. Coupled with OEM batteries and video guidance, this is a very user-friendly option for your smart key fob.

Helpful Comparison Insights

When looking for the best batteries for your Subaru Outback, it’s important to distinguish between key fob batteries and main car battery components. For your key fob, most modern Subaru Outbacks (2015-2025) use a CR2032 battery. Products like the Key Fob Replacement Batteries for Subaru (Outback Forester…), (2 Pack) CR2032 Key fob Battery Replacement for Subaru…, Subaru Key Fob Battery Replacement CR2032 (2 Pack) – Fits…, Key Fob Replacement Batteries for Subaru CR2032 (Pack of…), and Key Fob Battery Replacement for Subaru Outback Forester… all fit this description. They generally come in 2-packs, which is great value for having a spare. Many of these CR2032 options also include pry tools and video instructions, which are incredibly helpful for a damage-free, DIY installation.

However, if your Subaru Outback uses a traditional key fob (where the key blade is part of the fob, typically for older models or non-push-to-start vehicles), you’ll likely need a different battery type. The Key Fob Replacement Batteries for Subaru Traditional Key… specifically addresses this need with CR1620 batteries. Always double-check your existing key fob’s battery type before purchasing.

Then there’s the EAPP 81608AG020 / 81608YC000 POSITIVE Battery Terminal…. This isn’t a battery, but a crucial component for your main car battery. If you’re experiencing starting issues, especially in older Subaru Outbacks (2000-2019), a corroded or faulty terminal can be the culprit. This product is a durable, OEM-grade replacement that ensures a solid connection, which is vital for your car’s electrical system and prevents problems that might seem like a dead main battery. Remember, while key fob batteries keep your remote working, a good battery terminal keeps your car starting reliably.

Final Verdict

Choosing the right battery for your Subaru Outback really boils down to what you need to power.

For the vast majority of 2015-2025 Subaru Outback smart key fob owners, the CR2032 options are your go-to. If I had to pick a standout from the CR2032 choices, I’d lean towards options like the (2 Pack) CR2032 Key fob Battery Replacement for Subaru… or Key Fob Battery Replacement for Subaru Outback Forester… because they offer not just high-quality OEM-grade batteries but also include helpful tools and video guides. This takes all the stress out of a DIY replacement, making it accessible for everyone.

If you happen to own an older Subaru Outback with a traditional key fob, the Key Fob Replacement Batteries for Subaru Traditional Key… (CR1620) is specifically designed for your needs, so don’t overlook it.

And let’s not forget the unsung hero, the EAPP POSITIVE Battery Terminal. While it’s not a battery, it’s a critically important component for your main car battery’s health. For Subaru Outback owners (2000-2019) looking to ensure reliable main battery connection and prevent electrical issues, this OEM-grade terminal is an investment in peace of mind.

Ultimately, whether it’s powering your remote or ensuring your engine starts, reliable battery solutions for your Subaru Outback are essential for smooth daily driving and those off-road adventures.

Comprehensive FAQ Section

Q1: What type of battery does my Subaru Outback key fob use?
A1: Most modern Subaru Outback smart key fobs (typically 2015-2025 models) use a CR2032 3V coin cell battery. However, some older traditional key fobs may use a CR1620 battery. Always check your owner’s manual or the existing battery in your fob to confirm.

Q2: How often should I replace the battery in my Subaru Outback key fob?
A2: The lifespan of a Subaru Outback key fob battery can vary, but generally, they last between 2 to 4 years. If you notice your key fob becoming less responsive or the range decreasing, it’s a good sign it’s time for a replacement.

Q3: Can I replace my Subaru Outback key fob battery myself, or do I need to go to a dealership?
A3: Absolutely! Replacing your Subaru Outback key fob battery is a straightforward DIY task that takes only a few minutes. Many battery kits even come with pry tools and instructional videos to guide you through the process, saving you time and money compared to a dealership visit. No reprogramming is typically required for a battery swap.

Q4: Is the positive battery terminal important for my Subaru Outback, even if it’s not the battery itself?
A4: Yes, the positive battery terminal is extremely important for your Subaru Outback. It ensures a secure and clean electrical connection between your car’s main battery and the vehicle’s electrical system. A corroded or loose terminal can lead to starting problems, intermittent electrical issues, and even premature battery failure, mimicking a dead battery.

Q5: Are the key fob batteries for all Subaru Outback models the same?
A5: No, not all Subaru Outback key fob batteries are the same. As mentioned, modern smart fobs typically use CR2032 batteries, while older traditional key fobs might require CR1620 batteries. It’s crucial to confirm compatibility by checking your specific key fob design or the existing battery type.

Q6: What tools do I need to replace my Subaru Outback key fob battery?
A6: For most Subaru Outback key fob battery replacements, you’ll need a small flathead screwdriver or a plastic pry tool (often included in battery kits) to gently open the key fob casing. Once opened, you simply swap out the old battery for a new one.

Q7: How can I tell if my Subaru Outback’s key fob battery is low?
A7: Common signs of a low Subaru Outback key fob battery include a reduced operating range, needing to press buttons multiple times for a response, or the vehicle displaying a “low key fob battery” warning message on the dashboard.