10 Best Battery For Subaru Forester Reviews

You rely on your Subaru Forester every day, whether you’re commuting through the city, heading out on a weekend adventure, or navigating snowy roads. There’s nothing more frustrating than turning the key and hearing a weak crank—or discovering your key fob won’t unlock the doors because its battery died. Your Forester’s battery system is the heart of its electrical reliability, and keeping it in top shape means you’ll never be left stranded.

This guide covers everything you need: main starting batteries for your Forester, replacement key fob batteries for smart remotes, and essential accessories like hold-down kits and terminal connectors. I’ll walk you through each product’s features, strengths, and ideal use cases so you can choose wisely and get back on the road with confidence.

Mighty Max Battery MM-G35 Group Size 35 – Reliable AGM Starting Power

If your Subaru Forester (2019–2023) needs a straightforward upgrade from the factory battery, the Mighty Max MM-G35 delivers strong, consistent starts in any weather. With a 12V, 55Ah rating and 650 cold cranking amps, this AGM battery is built to handle cold mornings and hot summers alike. The 100-minute reserve capacity means you can run accessories longer without draining the battery, which is great if you frequently use power outlets or leave the lights on by accident.

The sealed, spill-proof AGM design eliminates the risk of acid leaks and allows you to mount it in various positions (except upside down). The rugged internal construction resists shock and vibration, a real plus if you take your Forester off-road or drive on rough roads. This battery is a direct fit for Group Size 35 and includes the necessary adapters for many Subaru models. You’ll notice the fast cranking the moment you turn the key.

View all product features

• Fast Starting Power: This 12V 55Ah 650 CCA delivers strong, steady starts is ready for any weather in any season.
• Made to Last: With its 100-minute Reserve Capacity supports longer run times and a longer overall battery lifespan.
• All Power, No Mess AGM Design: Sealed and spill-proof, the MM-G35 is built with high discharge output and deep discharge recovery to keep power steady when it counts.
• Strength That Starts on the Inside: The rugged construction resists shock, vibration, and harsh conditions, delivering reliable performance across a wide range of temperatures and tough environments.
• Tested Tough & Certified Safe: Mighty Max batteries are built in an ISO-certified facility and meet CE standards for quality, safety, and reliability
• Rechargeable and Versatile: Mounts in multiple positions (excluding upside down) for flexible vehicle installation.
• Dimensions: Sized at 9.06 x 6.89 x 8.82 inches, ready to fit your ride with ease. Polarity is easy to spot, with the positive terminal on the right and the negative on the left.
• Included: Each battery includes mounting screws for quick, hassle-free installation.
• Not Included: Wire harness and mounting accessories are not included.
• 3 Year Warranty: Mighty Max strength, long-haul protection, and confidence that you’re powered to the max.

---

Mighty Max Battery MM-G35 Start and Stop – Designed for Modern Start-Stop Systems

This version of the Mighty Max G35 is specifically engineered for vehicles equipped with start-stop technology, making it an excellent choice for later-model Foresters that automatically shut off the engine at stops. It shares the same 12V, 55Ah, 650 CCA, and 100-minute reserve capacity as the standard MM-G35, but with enhanced cycling capability to handle the frequent restarts that start-stop systems demand.

The AGM construction is identical in terms of being spill-proof and vibration-resistant, but the internal chemistry is tuned for deeper discharge recovery. This means you’ll get consistent cranking power even after hundreds of stop-start cycles. If your Forester has the auto start-stop feature, this battery will keep up without premature failure. Installation is straightforward, and it fits the Group 35 footprint perfectly.

View all product features

• Fast Starting Power: This 12V 55Ah 650 CCA delivers strong, steady starts is ready for any weather in any season.
• Made to Last: With its 100-minute Reserve Capacity supports longer run times and a longer overall battery lifespan.
• All Power, No Mess AGM Design: Sealed and spill-proof, the MM-G35 is built with high discharge output and deep discharge recovery to keep power steady when it counts.
• Strength That Starts on the Inside: The rugged construction resists shock, vibration, and harsh conditions, delivering reliable performance across a wide range of temperatures and tough environments.
• Tested Tough & Certified Safe: Mighty Max batteries are built in an ISO-certified facility and meet CE standards for quality, safety, and reliability
• Rechargeable and Versatile: Mounts in multiple positions (excluding upside down) for flexible vehicle installation.
• Dimensions: Sized at 9.06 x 6.89 x 8.82 inches, ready to fit your ride with ease. Polarity is easy to spot, with the positive terminal on the right and the negative on the left.
• Included: Each battery includes mounting screws for quick, hassle-free installation.
• Not Included: Wire harness and mounting accessories are not included.
• 3 Year Warranty: Mighty Max strength, long-haul protection, and confidence that you’re powered to the max.

---

Deluxe Batteries Key Fob Replacement – Smart Remote Battery Pack (2-Pack)

Don’t get stuck fumbling with a dead key fob. This 2-pack from Deluxe Batteries includes the correct CR2032 cells for Subaru smart remotes from 2015–2025. Always check the fitment guide in the product images to confirm compatibility with your fob style—these are for the smart fobs that have no protruding key blade. The installation is straightforward: pop open the fob, swap the battery, and close it back up—no reprogramming needed.

The batteries are high-quality and provide long-lasting power, so you can keep a spare in your glove compartment or replace both fobs at once. The step-by-step guide in the description makes it easy even if you’ve never changed a fob battery before. Avoid the dealer markup and handle this simple maintenance yourself in minutes.

View all product features

• **Please confirm compatibility using the fitment guide located in the product images**
• Compatible with 2015-2025 Subaru smart fobs. Not compatible with standard Subaru keys that have the key sticking out of the fob. May be compatible with certain fobs prior to 2015 (check fitment guide).
• Avoid expensive dealer service charges and easily replace your key fob battery yourself – only takes a few minutes – no programming required
• Easy do-it-yourself guide to changing your key fob battery available in the description
• Includes (2) original premium Deluxe CR2032 3V batteries. Does not include actual key fob

---

Auliguy Key Fob Battery Replacement – OEM-Quality CR2032 with Scratch-Free Tool

If you want peace of mind knowing you’re using the same OEM-grade battery that Subaru installs at the factory, this Auliguy set is your best bet. The CR2032 batteries are sourced from the same trusted manufacturer, ensuring consistent performance and long shelf life. This kit includes two batteries plus a dual-purpose pry tool that opens your key fob without scratching the plastic case—a thoughtful addition.

The tool is specially designed to fit the seam of Subaru smart fobs, so you won’t struggle or damage the fob. Installation takes less than a minute per fob, and the included video guide walks you through the process. No reprogramming required. This set covers a wide range of Subaru models from 2015–2025, including Forester, Outback, Crosstrek, and more (check compatibility list before purchase).

View all product features

• Original OEM battery as provided by the manufacturer – Our CR2032 batteries are sourced from the same trusted manufacturer used by Subaru. (Not compatible with standard Subaru keys with the key sticking out of the fob.)
• Compatible with Subaru Key Fobs Including – Subaru Ascent (2019-2025), Subaru Baja (2003-2006), Subaru BRZ (2014-2025) , Subaru Crosstrek (2015-2025), Subaru Forester (2015-2025), Subaru Impreza (2015-2025), Subaru Legacy (2015-2025), Subaru Outback (2015-2025), Subaru STI (2019-2020), Subaru WRX (2015-2025) (Not compatible – Solterra, Tribeca )
• Includes Step-by-step Installation Video – Remote reprogramming is not required and battery replacement is simple. Avoid expensive dealer service charges and replace your key fob battery yourself.
• Scratch-Free Install Tool – Included dual-purpose opener safely opens key case without damage, convenient for battery swap.
• Includes (2) original premium CR2032 3V batteries for replacement & backup, Keyless entry remote fob not included.

---

WHHZGYW Battery Hold Down Kit – Secure Your Battery in Place

A loose battery is a recipe for electrical gremlins and potential damage. This aftermarket hold-down kit from WHHZGYW is designed to replace worn or missing battery clamps on Subaru Forester (2009–2024), Impreza/WRX/STI (2008–2016), and Crosstrek (2013–2023). It includes two J-hooks, a battery holder, and nuts—everything you need to secure your battery firmly.

The steel construction is coated with a thermosetting baked powder finish that resists rust and corrosion, even in damp engine bays. The parts are direct replacements for OEM numbers 82182AG001, 82161AG001, and 82161AG012. If your battery is sliding around or the original clamps are corroded, this kit restores a tight, safe fit. Installation is straightforward with basic hand tools.

View all product features

• Part Type: Battery hold down kit
• Compatible with Subaru Forester 2009-2024, Impreza/WRX/STI 2008-2016, Crosstrek 2013-2023 (Replaces 82182AG001, 82161AG001, 82161AG012)
• The Battery Tie Down Holder Clamp is made of steel and coated with a thermosetting baked powder finish to ensure anti-rust and long-lasting performance
• Package Included: Battery Holder 82182AG001, J Hook 82161AG001, J Hook 82161AG012, Nut 023806006
• NOTE: Please carefully check your vehicle type with our fitment, and please compare our part pictures with your old part to avoid the wrong purchase

---

SHI Key Fob Battery Replacement CR2032 – Industrial-Strength for Subaru Smart Remotes

Another solid option for replacing your Subaru smart key fob battery, this 2-pack from SHI offers industrial-strength CR2032 cells designed for superior lifespan. They’re compatible with 2015–2025 Subaru smart fobs (not the ones with protruding keys). The batteries are same as those used by elite manufacturers, promising long-lasting power for your daily routine.

Installation is quick—pop open the fob, swap the old battery, and you’re done. No programming required. The description includes a detailed guide with photos to help you. The value is excellent for a two-pack, and you’ll likely have one spare for later. These batteries also work in many other devices like remote controls and small electronics, so they’re versatile.

View all product features

• Elite Batteries Replacement are compatible with 2015-2025 Subaru smart key fobs. Not compatible with Subaru key fobs with key sticking out of the fob. May be compatible with key fobs prior to 2015 (check photo aguide).
• Fast & Easy Self-Installation: Replace key fob battery in minutes; no programming required. Check the detailed guide below in the description.
• Industrial-Strength CR2032 Batteries: Superior performance and lifespan; compatible with the Subaru car models mentioned below in the description.
• More Value: Long-lasting performance for your key fobs, remotes, and more (tons of uses).
• Disclaimer: Check fitment guide in images and description to guarantee compatibility with Subaru key fob model. Key fob batteries use by date is: 12/31/2033 (8-year shelf life).
• Elite Batteries by SHI (Smarter Home Ideas) Carded blister pack – contents shown on packaging. Packaging may vary. Assembled and quality-inspected in the USA.

---

EAPP Positive Battery Terminal Connector – OE-Grade Restoration for Subaru

A corroded or loose battery terminal can cause intermittent starting issues and electrical faults. This EAPP positive terminal connector is a direct replacement for Subaru OEM parts 81608AG020 and 81608YC000, fitting over 100 Subaru models from 1990 onward. It’s made from C26000 copper alloy with tin plating, providing excellent conductivity and corrosion resistance compared to cheap aftermarket alternatives.

The 18mm positive post opening and 8mm stud bolt ensure a tight, vibration-resistant connection. If your original terminal is cracked, green with corrosion, or just not holding the battery cable tightly, this $15 replacement restores full electrical flow. Installation requires basic tools—disconnect the negative cable first, remove the old terminal, crimp or screw the new one onto the cable, and reconnect. A perfect fix for older Foresters.

View all product features

• 𝗘APP 𝟴𝟭𝟲𝟬𝟴𝗔𝗚𝟬𝟮𝟬 / 𝟴𝟭𝟲𝟬𝟴𝗬𝗖𝟬𝟬𝟬 Positive Battery Terminal Clamp: Direct-fit replacement for Subaru OE part numbers 81608AG020 and 81608YC000, engineered to restore proper electrical performance and ensure a secure power path from the battery to the vehicle’s electrical system.
• 𝗩𝗲𝗵𝗶𝗰𝗹𝗲 𝗖𝗼𝗺𝗽𝗮𝘁𝗶𝗯𝗶𝗹𝗶𝘁𝘆 – 𝗙𝗶𝘁𝘀 𝗼𝘃𝗲𝗿 𝟭𝟬𝟬+ 𝗦𝘂𝗯𝗮𝗿𝘂 𝗺𝗼𝗱𝗲𝗹𝘀: Compatible with a wide range of Subaru vehicles, including: Baja (03–06), BRZ (13–22), Crosstrek (13–24), Forester (98–24), Impreza (93–24), Legacy (90–19), Outback (00–19), STI (08–20), Tribeca (06–14), WRX (08–24), XT (89–91) and others using the same style terminal.
• 𝗢𝗘-𝗚𝗿𝗮𝗱𝗲 𝗠𝗮𝘁𝗲𝗿𝗶𝗮𝗹 – 𝗖𝟮𝟲𝟬𝟬𝟬 𝗖𝗼𝗽𝗽𝗲𝗿 𝗔𝗹𝗹𝗼𝘆 + 𝗧𝗶𝗻 𝗣𝗹𝗮𝘁𝗶𝗻𝗴: Constructed from high-conductivity C26000 copper alloy with tin plating, ensuring superior corrosion resistance, stable electrical flow, and long service life significantly outperforming low-grade aftermarket alternatives.
• 𝗣𝗿𝗲𝗰𝗶𝘀𝗶𝗼𝗻 𝗦𝗽𝗲𝗰𝘀 – 𝟭𝟴𝗺𝗺 Positive Post + 8mm Stud Bolt: Designed with an 18mm positive post opening, 8mm stud bolt, and M8 nut, delivering a strong, vibration-resistant connection. Ideal for replacing aged, corroded, or loose terminals that cause starting issues or intermittent electrical faults.
• 𝗠𝗮𝗱𝗲 𝗶𝗻 𝗝𝗮𝗽𝗮𝗻 – 𝗢𝗘𝗦 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗧𝗵𝗮𝘁 𝗠𝗮𝘁𝗰𝗵𝗲𝘀 𝗙𝗮𝗰𝘁𝗼𝗿𝘆 𝗦𝘁𝗮𝗻𝗱𝗮𝗿𝗱𝘀: Manufactured in Japan by an OES-tier supplier, maintaining original Subaru factory specifications for fit, finish, and durability. An updated OE replacement for 81608GA110, ensuring the same performance as the original installed at the factory.
• 𝗘𝗮𝘀𝘆 𝗗𝗜𝗬 𝗦𝗲𝘁𝘂𝗽 – 𝗕𝗼𝗹𝘁-𝗢𝗻 𝗥𝗲𝗽𝗹𝗮𝗰𝗲𝗺𝗲𝗻𝘁: Quick, no-special-tools installation. Simply unbolt the old terminal and bolt this one on. Perfect for DIY repairs or professional service—typically a 10-minute repair to restore clean electrical connectivity and strong starting power.

---

Pinochi CR1620 Key Fob Battery Replacement – For Subaru Head Key Fobs (3/4 Button)

If your Subaru uses a head key fob (the type with the key blade that folds or is exposed), you need a CR1620 battery, not the CR2032 used in smart fobs. This Pinochi pack includes two CR1620 batteries plus three pry tools, making replacement effortless. These are the same batteries as the OEM originals, used in Subaru fobs with FCC IDs CWTB1G077, CWTWBU766, and CWTWB1U811.

Compatible with many Subaru models from 2010–2020, including Forester, Crosstrek, Impreza, Legacy, Outback, and WRX, this kit covers the 3- or 4-button head fobs shown in the product photos. Installation is simple: use the pry tool to open the fob, replace the battery, and snap it shut—no reprogramming needed. Avoid dealer charges and do it yourself in five minutes.

View all product features

• Bundle of Two (2) CR1620 Remote Fob Battery + (3) Opening/Pry Tool.[Installation video included]
• OEM CR1620 BATTERIES – Same batteries as provided by OEM original manufacturer in all Subaru (3 or 4 Button) HEAD FOB key fobs (as shown in product photo) , fit FCC ID’S CWTB1G077, CWTWBU766 and CWTWB1U811.
• SAFE AND RELIABLE – Tested under Strict Quality Control Standards. Long Battery Life and Long Lasting Power.
• SIMPLIFIES BATTERY REPLACEMENT: Avoid expensive dealer service charges by easily replacing your key fob battery yourself! No need to schedule battery replacement service, no need to reprogram remote control.
• INSTALLATION TOOLS INCLUDED: The included tool helps to open the remote control and remove the batteries without damaging the remote control case.(Keyless entry remote fob not included.)

---

Subaru Battery Charger and Maintainer SOA9010001 – Genuine OEM Care

Keep your Forester’s battery in peak condition with the official Subaru charger and maintainer. This genuine OEM part (SOA9010001) is designed for Subaru models including Forester, Outback, Legacy, Ascent, WRX, BRZ, and more from 2019–2026. It automatically charges your battery and switches to maintenance mode to prevent overcharging, ideal for vehicles that sit for extended periods or for winter storage.

The unit is compact and includes a quick-connect harness that can be permanently attached to the battery terminals for easy plug-in access. The smart circuitry detects battery condition and adjusts the charge rate accordingly. Using the OEM charger ensures compatibility with your Subaru’s electrical system and avoids voiding any warranties. It’s a must-have if you store your Forester or drive infrequently.

View all product features

• Subaru Brand Charger and Maintainer
• SOA9010001
• 2019-2026 Ascent 2019-2026 WRX
• 2019-2026 Brz 2019-2025 Legacy
• 2019-2026 Outback
• 2019-2026 Crosstrek
• 2019-2026 Forester
• 2019-2026 Impreza
• 2019-2021 Sti

---

Subaru Battery Cable Terminal End with Sensor 29182AA060 – Genuine OEM for Forester 2019–2025

If your Forester’s battery cable terminal has a failed sensor (often causing a battery warning light or start/stop issues), this genuine Subaru part is the exact fix. Part number 29182AA060 fits Forester models from 2019–2025. The integrated sensor monitors battery condition and communicates with the vehicle’s system to manage charging and start-stop operation.

This is a direct OEM replacement, so you can be sure of perfect fit and function. The terminal includes the sensor module and the cable end with the correct connector. Installation involves disconnecting the battery, removing the old terminal, and attaching the new one to the existing cable (may require crimping if the cable is damaged). If you’re experiencing erratic electrical behavior or a check battery light, this sensor is often the culprit.

View all product features

• Battery Cable Terminal With Sensor
• Genuine Subaru Part Number: 29182AA060
• Forester 2019-2025

---

Buyer’s Guide: What to Consider

Choosing the right battery and related accessories for your Subaru Forester can feel overwhelming with so many options. This quick buying guide covers the key factors to consider, so you can make an informed decision that keeps your vehicle running reliably.

• Battery Group Size: Your Forester typically uses Group Size 35 for the main starting battery. Always check your owner's manual or the existing battery label to confirm the correct group size, as the physical dimensions and terminal positions must match.
• Cold Cranking Amps: CCA measures starting power in cold conditions. For a Forester, 550–650 CCA is adequate for most climates. If you live in areas with harsh winters, lean toward the higher end of that range to ensure reliable starts.
• AGM vs Flooded Battery: AGM (Absorbent Glass Mat) batteries are sealed, spill-proof, and resist vibration better than flooded batteries. They handle deep discharges and start-stop systems well. If your Forester has auto start-stop, an AGM battery is highly recommended.
• Reserve Capacity: Reserve capacity (RC) tells you how long the battery can run essential loads if the alternator fails. A higher RC (like 100 minutes) gives you extra safety margin for lights, radio, or hazards in an emergency.
• Key Fob Battery Type: Subaru smart remotes (no protruding key blade) use CR2032 batteries. Older head key fobs (with the key sticking out) use CR1620 batteries. Check your fob type before purchasing to avoid incompatibility.
• Battery Terminal Condition: Corroded or loose terminals can cause starting problems and electrical gremlins. Inspect terminals regularly. A replacement terminal connector or a battery hold-down kit can restore a reliable connection and prevent battery movement.
• Charger and Maintainer Use: If you store your Forester for weeks or live in extreme climates, a battery charger/maintainer prolongs battery life. Choose an OEM-compatible or smart charger that automatically switches to maintenance mode to prevent overcharging.

Conclusion

Your Subaru Forester deserves a battery system you can count on. Whether you need a robust starting battery like the Mighty Max MM-G35 for daily reliability, a key fob battery pack for quick DIY fixes, or a genuine OEM charger to maintain peak performance, there’s a product here to meet your needs. Remember to match the battery group size and technology to your driving habits and climate.

For most owners, the Mighty Max MM-G35 (standard or start-stop version) provides excellent value and dependable power. If you’re tackling fob battery replacement, the Auliguy kit with the pry tool is a standout. And for long-term battery health, the Subaru OEM charger is a wise investment. Whichever you choose, you’ll enjoy peace of mind every time you turn the key.