2019 Polaris Sportsman 570 Battery Size

There’s nothing worse than gearing up for a day on the trails, turning the key on your Polaris Sportsman 570, and hearing that dreaded… click. Or worse, absolute silence. A dead or weak battery can bring any adventure to a screeching halt before it even begins. We’ve all been there, and it’s a frustrating moment that can ruin a perfect day of riding.

Here at FatBoysOffroad, we promise this guide will be your ultimate resource for everything you need to know. We’re going to eliminate the guesswork and confusion completely.

This article provides a complete 2019 polaris sportsman 570 battery size guide, from identifying the exact OEM size to a step-by-step replacement process. We’ll even cover powerful upgrade options and the maintenance tips that will keep you firing up reliably, season after season. Let’s get your machine back in action.

Why the Correct Battery Size is Non-Negotiable for Your Sportsman 570

Choosing a battery might seem simple, but getting the size and specs wrong can cause a surprising number of headaches. It’s about more than just fitting in the tray; it’s about performance, safety, and longevity.

The right battery ensures your ATV has the power it needs, exactly when it needs it. This is one of the key benefits of 2019 polaris sportsman 570 battery size accuracy.

The Risks of an Incorrect Battery

Think about what happens when you install the wrong battery. Here are some of the common problems with 2019 polaris sportsman 570 battery size mistakes:

Poor Fitment: A battery that’s too large won’t fit in the designated tray. One that’s too small will vibrate excessively, leading to internal damage, loose connections, and premature failure. You can’t just stuff a rag in there to hold it tight!
Insufficient Power: A battery with too few Cold Cranking Amps (CCA) will struggle to turn over the engine, especially in cold weather. This puts extra strain on your starter and electrical system.
Accessory Failure: Your winch, light bars, and heated grips all rely on a strong battery. An undersized unit won’t have the reserve capacity (Amp Hours) to run these accessories reliably, especially when the engine is at low RPMs.
Charging System Damage: Your Sportsman’s stator is designed to charge a battery with specific characteristics. An incorrectly sized battery can overwork the charging system, potentially leading to costly repairs down the road.

Decoding the 2019 Polaris Sportsman 570 Battery Size and Specs

Let’s get straight to the point. You need to know the exact size and specifications for your machine. This knowledge is the foundation of a successful replacement.

The factory-installed OEM battery for the 2019 Polaris Sportsman 570 is typically a YTX20L-BS. This alphanumeric code tells you everything you need to know.

Understanding the Battery Code: YTX20L-BS

It looks like a random string of letters and numbers, but it’s a standardized naming convention that gives you critical information:

YTX: This designates a high-performance AGM (Absorbed Glass Mat) powersports battery manufactured by Yuasa, but the “YTX” prefix is widely used by many brands for compatible models.
20: This is the power rating or size indicator. It’s the most important part for cross-referencing. Any replacement battery should be a “20” series.
L: This indicates the polarity. “L” means the negative terminal is on the left side when you are looking at the front of the battery. This is critically important for ensuring your cables reach without stretching or shorting out.
BS: This means the battery is “Bottle Supplied.” It ships dry with the acid in a separate container that you add before the first charge. However, most modern replacements are factory-activated and sealed, which is far more convenient.

Key Electrical Specs to Know

Beyond the physical size, two numbers determine a battery’s performance. Consider these your most important 2019 polaris sportsman 570 battery size tips for selection.

Cold Cranking Amps (CCA): This measures the battery’s ability to start an engine in cold temperatures. The OEM YTX20L-BS battery usually has around 270-310 CCA. If you ride in the cold or run a winch, look for a battery at or above this number.

Amp Hours (Ah): This measures the battery’s storage capacity. It tells you how long it can supply power. The standard is around 18 Ah. Higher Ah is better if you run lots of accessories with the engine off.

Your Complete 2019 Polaris Sportsman 570 Battery Size Guide: Replacement & Installation

Alright, you’ve got your new battery. Now it’s time to get your hands dirty. This step-by-step process will show you how to 2019 polaris sportsman 570 battery size replacement is done safely and correctly. Safety first, always!

Tools and Safety Gear You’ll Need

Safety Glasses & Gloves
Socket Wrench Set (typically 10mm)
Screwdriver (Phillips or Flathead, depending on your model)
Terminal Cleaning Brush or a wire brush
Battery Terminal Protector Spray (optional, but recommended)

Step-by-Step Installation Process

Locate the Battery: On the 2019 Sportsman 570, the battery is located under the seat. Remove the seat by unlatching it from the rear. You’ll see the battery in its tray, secured by a rubber strap or a metal hold-down bracket.
Disconnect the Negative Terminal First: This is the most important safety step. Use your 10mm wrench to loosen the nut on the black (negative, “-“) terminal. Once loose, wiggle the cable off the post and tuck it away from the battery so it can’t accidentally make contact.
Disconnect the Positive Terminal: Now, you can safely disconnect the red (positive, “+”) terminal. This terminal often has a red rubber cover. Slide it back, loosen the nut, and remove the cable.
Remove the Old Battery: Unhook the rubber strap or unbolt the hold-down bracket. Carefully lift the old battery straight out of the ATV. Be aware, these batteries are heavy and can contain hazardous materials.
Clean the Terminals and Tray: Before installing the new battery, inspect the cable ends. If you see any white or greenish corrosion, use your terminal cleaning brush to scrub it off. A clean connection is a good connection. Wipe down the battery tray as well.
Install the New Battery: Carefully place your new battery into the tray, ensuring it sits flat. Make sure the negative and positive terminals are oriented correctly (negative on the left, positive on the right). Secure it with the hold-down bracket or strap.
Connect the Positive Terminal First: Now you’ll do the reverse of removal. Attach the red (positive, “+”) cable to the positive terminal and tighten the nut securely. Don’t overtighten, but make sure it’s snug. Replace the red rubber cover.
Connect the Negative Terminal Last: Finally, connect the black (negative, “-“) cable to the negative terminal and tighten it. This is the final electrical connection, and you might see a tiny, harmless spark as you make contact. This is normal.
Apply Terminal Protector (Optional): For extra protection against corrosion, you can spray a thin layer of battery terminal protector on both connections.
Start it Up: Put the seat back on, turn the key, and fire up your Sportsman. Let it run for a few minutes to ensure the charging system is working correctly.

Upgrading Your Battery: AGM vs. Lithium Options

The standard YTX20L-BS is a great AGM battery. But for riders who demand more, an upgrade might be in order. This is where you can see the real benefits of 2019 polaris sportsman 570 battery size upgrades.

High-Performance AGM Batteries

These are a direct drop-in replacement but are built with purer lead and more advanced internal construction. They often boast higher CCA and Ah ratings than the stock battery, providing more reliable starts and better power for accessories like a heavy-duty winch or extra lighting.

Lithium (LiFePO4) Batteries

Lithium is the cutting edge of battery technology. Here’s the breakdown:

Pros: They are incredibly lightweight (often 70-80% lighter), have a much longer service life, can deliver higher cranking power, and hold a charge for months.
Cons: They are significantly more expensive upfront and can be sensitive to extreme cold (though many modern ones have built-in management systems to handle this). They also require a lithium-compatible battery tender.

Pro Tip: If you decide to go with lithium, ensure it has a built-in Battery Management System (BMS) to protect it from overcharging and over-discharging.

Best Practices for Battery Care: A Maintenance Guide

A little bit of care goes a long way in extending your battery’s life. Following this 2019 polaris sportsman 570 battery size care guide will save you money and prevent you from getting stranded.

Regular Charging is Key

ATVs often sit for long periods, and their small electrical systems can have a slight “parasitic drain” that slowly depletes the battery. The best way to combat this is with a smart battery tender or maintainer.

Unlike a simple trickle charger, a smart tender monitors the battery’s voltage and only applies a charge when needed. This prevents overcharging, which can boil the electrolyte and kill a battery just as fast as undercharging.

Keep it Clean and Secure

Every few rides, take a moment to pop the seat off and inspect your battery. Ensure the hold-down is tight and the battery isn’t vibrating. Check the terminals for any signs of corrosion and clean them as needed. A clean, tight connection ensures maximum power flow.

Sustainable and Eco-Friendly Battery Choices and Disposal

Being a responsible rider means taking care of the environment we love to explore. When it comes to batteries, this is especially important.

A key aspect of a sustainable 2019 polaris sportsman 570 battery size strategy is longevity. Investing in a high-quality AGM or Lithium battery that lasts 5-7 years instead of a cheap lead-acid that dies in 2 years means less waste and fewer resources consumed.

When your old battery finally gives up, never throw it in the regular trash. Lead-acid batteries contain toxic materials that are harmful to the environment. Any auto parts store or battery retailer that sells you a new battery is required by law to accept your old one for recycling. This is the most eco-friendly 2019 polaris sportsman 570 battery size practice you can adopt.

Frequently Asked Questions About the 2019 Polaris Sportsman 570 Battery

What are the signs of a failing ATV battery?

Common signs include slow engine cranking, dimming headlights when you start the engine, accessories like your winch operating slower than usual, or the battery failing to hold a charge for more than a few days. If you have to jump-start it frequently, it’s time for a new one.

How long should a Polaris Sportsman 570 battery last?

With proper care and maintenance using a battery tender, a quality AGM battery should last between 3 to 5 years. A lithium battery can last significantly longer, often 7 years or more. Neglect can shorten that lifespan to just a year or two.

Can I use a different size battery in my Sportsman 570?

We strongly advise against it. You should always use a direct replacement for the YTX20L-BS. Using a battery that doesn’t fit securely or has the wrong terminal polarity can lead to damaged components, electrical shorts, or leave you stranded on the trail. Stick with what the engineers designed for your machine.

Do I need to charge a new battery before installing it?

Yes, this is one of the most important 2019 polaris sportsman 570 battery size best practices. Even “factory-activated” batteries can lose some charge while sitting on a shelf. To ensure maximum performance and lifespan, you should always give a new battery a full, slow charge with a compatible smart charger before its first use.

Now you’re armed with all the knowledge you need to confidently tackle your battery replacement. Getting the right size, installing it safely, and maintaining it properly will ensure your Sportsman 570 is ready to roar to life whenever adventure calls.

Get out there, ride safe, and have fun!

Author
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Thomas Corle

Founder & Automobile expert at FatBoysOffroad

Automobile expert and off-road enthusiast, sharing in-depth knowledge of vehicles, gear, and adventures. Helping readers make smart decisions and enjoy the thrill of off-roading safely and confidently.