Group 35 Batteries

Explore our group 35 battery collection designed for reliable starts and long-lasting power. Featuring premium options like OPTIMA RedTop and NorthStar AGM, these batteries are made to perform.

Why Choose Group 35 Battery?

These batteries are compact in size but packed with power. That’s why group 35 batteries are ideal for demanding setups like marine systems, RVs, and off-road vehicles. With strong cold cranking amps (CCA), it delivers reliable starts even in harsh or cold environments.

You’ll find both AGM and Flooded options here, so whether you want maintenance-free power or classic reliability, we’ve got you covered. Here’s why you should choose:

• Strong starting power in all seasons

• Great cold-weather performance with high CCA ratings

• Available in both AGM (maintenance-free) and Flooded styles

• Ideal for everyday driving, commuting, and light-duty use

• Quick and easy installation

Battery Dimensions: What You Need to Know

Group 35 batteries follow a standardized size defined by the Battery Council International (BCI), which makes them easy to match and install across a wide range of vehicles, RVs, and marine applications. This universal sizing eliminates the need for custom trays, cable extensions, or fitment guesswork.

Physically, these batteries measure approximately 9.06 inches in length, 6.88 inches in width, and 8.88 inches in height. Along with standardized dimensions, most Group 35 batteries deliver an amp-hour (Ah) rating between 45Ah and 65 Ah. 

That capacity offers a dependable balance of starting power and energy storage, ideal for supporting lights, onboard electronics, and light-duty accessory use when your engine isn’t running.

Group 35 Battery Types

Different battery chemistries come with their own advantages depending on how you drive, where you live, and what your vehicle demands. Below are the most common types you’ll find in this group, each suited to specific use cases.

Flooded Lead-Acid Batteries

These are the most traditional and widely used battery types. They’re cost-effective and provide dependable starting power for most standard vehicles. However, they require occasional maintenance, like topping off electrolyte levels and keeping terminals clean. If you're looking for a budget-friendly solution for everyday driving, this is a solid choice.

AGM (Absorbent Glass Mat) Batteries

AGM batteries are sealed, spill-proof, and maintenance-free favorite for modern vehicles with higher electrical demands. They recharge faster, perform better in extreme weather, and resist vibration - perfect for stop/start systems and heavy accessory use.

Group 35 AGM batteries, like OPTIMA RedTop or NorthStar, are known for reliable cold starts and longer lifespans. They’re ideal if you want strong performance with less upkeep.

Gel Cell Batteries

Gel batteries are another sealed, maintenance-free option designed for deep cycling rather than just starting power. While they’re not as common in Group 35, they shine in marine and RV applications where batteries are discharged and recharged often. 

They offer excellent stability, even in hot climates or off-road conditions. If your battery faces frequent use and deep drain cycles, gel cell technology is worth considering.

Lithium-Ion Batteries

Though rare in the group 35 format, lithium-ion batteries are unmatched in energy density and lifespan. They’re ultra-lightweight, require zero maintenance, and deliver consistent power output without voltage drop. 

You’ll typically find them in performance vehicles or specialized systems where space and weight savings matter. They're also the most expensive option - but if you want top-tier efficiency, they're hard to beat.

Our Featured Products

Not sure which battery to choose? We’ve made it easy. These are our top-recommended options - tried, tested, and trusted by thousands of drivers. Take a look and see which one fits your ride and lifestyle best.

OPTIMA RedTop 8020-164 - AGM Starting Battery

Known for its legendary starting power, the OPTIMA RedTop is built for high-performance vehicles and cold-weather conditions. Its spiral-wound AGM technology resists vibration, delivers strong cranking amps, and requires zero maintenance. 

If you want quick, consistent starts every time, this battery delivers. It’s a favorite for drivers who don’t want to compromise on reliability.

NorthStar NSB-AGM35 - Group 35 AGM Battery

 The NorthStar NSB-AGM35 is designed for serious durability and long-lasting performance. It offers deep cycling capabilities with faster recharge rates and exceptional starting power. If you're driving daily or heading off the grid, this battery holds up under pressure. It’s maintenance-free and built to withstand extreme temperatures.

Why Should You Choose Impact Battery?

When it comes to batteries, the right choice isn’t just about voltage and fit-it’s about trust, expertise, and long-term performance. At Impact Battery, we combine years of hands-on experience with a deep understanding of battery technology to help you get more than just a replacement. You get a solution you can count on.

Expert Curation

We don’t carry every battery under the sun. Instead, we handpick the best-performing Group 35 batteries from the most reliable brands in the industry. Why? Because we’ve tested them. We know how they perform under load, how they hold up over time, and how they respond in harsh conditions - cold mornings, rough roads, high-drain systems.

From spiral-wound AGM to high-quality flooded options, we vet our inventory like mechanics vet parts, thoroughly and with zero tolerance for failure.

Personalized Product Guidance

The battery world is full of confusing specs- CCA, reserve capacity, amp-hour ratings, terminal types- and the wrong choice can lead to performance issues or premature failure. At Impact Battery, our support isn’t outsourced or scripted.

You’ll get real advice from real battery techs who understand how to match products to driving conditions, climate zones, alternator output, and electrical load demands. If you’re unsure about upgrading to an AGM battery or replacing the original equipment (OE) battery in your Toyota RAV4, we make it simple.

Professional-Grade Packaging & Fast Shipping

Heavy, lead-based batteries aren’t easy to ship, but we make sure yours arrives in perfect working condition. We use industry - approved packaging that protects terminals, minimizes shock, and prevents chemical damage during transit. 

Our fulfillment is fast, accurate, and tracked from our U.S. warehouse to your doorstep. No damaged goods or no dead-on-arrival issues. Just plug-and-play power you can rely on.

Reputation Built on Results

Thousands of drivers, DIY enthusiasts, and commercial customers trust Impact Battery because we consistently deliver great products, expert support, and customer-first service. We’ve earned 5-star reviews from first-time buyers and repeat customers alike. They come to us not just for a battery, but for clarity, support, and confidence.

How to Choose the Right Group 35 Battery?

Not all Group 35 batteries are built the same, and finding the right one comes down to more than just size. From daily commutes to weekend adventures, your battery needs to match your vehicle’s demands, driving habits, and climate. Here's how to make the right call and avoid guesswork.

Match Your Battery to Your Vehicle

If your car is equipped with modern technology, such as touchscreens, sensors, or a stop-start system, opt for an AGM battery. It’s designed to handle higher electrical loads, recharge faster, and deliver consistent performance, even in tough conditions. For simpler, older vehicles, a flooded lead-acid battery may be all you need.

Think About Where You Drive

Live in a cold climate? Look for a Group 35 battery with high Cold Cranking Amps (CCA) to ensure fast and reliable starts, even on freezing mornings. AGM batteries typically outperform in extreme temperatures.

Your Driving Habits

If you drive short distances or let your vehicle sit for days, go for a maintenance-free AGM or gel battery. These hold charge better over time and recover faster after deep discharges. Long road trips or regular use? A standard flooded battery can still do the job- just keep an eye on fluid levels.

Don’t Just Buy on Price- Buy for Performance

Budget matters, but so does longevity. Cheaper batteries might save you money today. But premium models like OPTIMA RedTop or NorthStar AGM often last longer, perform better, and save you the hassle of early replacement.

FAQs

Have questions about finding the right Group 35 Battery? Here are some FAQs below to find the battery that fits both your vehicle and your needs.

Why do Group 35 batteries vary so much in price?

Price reflects more than just size - it’s about internal technology, lifespan, and brand reputation. For example, a premium AGM battery, such as the OPTIMA RedTop, costs more due to its advanced construction and longer lifespan. At the same time, a standard lead-acid option may be more budget-friendly. Whether you're spending $200 or $900+, you're getting quality, but features vary.

What does polarity mean when choosing a battery?

Polarity refers to the terminal positions (positive and negative) on the battery. For Group 35, the most common is left positive (standard polarity). Always double-check your current setup or vehicle manual before ordering - getting this wrong could require cable adjustments or returns.

How do I know if a group 35 battery fits my car?

Group 35 is a popular fit for many Toyota, Honda, Nissan, and Subaru models. You can check your existing battery label, consult your owner's manual, or use our Battery Fitment Tool to confirm compatibility before buying.

Can I use a smart charger with these batteries?

Yes - and it’s recommended. A smart charger, such as the Schauer CM12A, helps maximize your battery’s life by automatically adjusting the charge level. It’s especially useful for vehicles in storage or not driven often.

The best time to replace your battery is before it fails. Get a reliable battery now.