Battery For 2015 Polaris Sportsman 570

There’s no feeling quite like it. You’re miles from the trailhead, the sun is starting to dip, and you hit the ignition on your Sportsman 570… only to be met with a weak click, or worse, complete silence. A dead battery can turn an epic off-road adventure into a long, frustrating walk back.

We’ve all been there. That sinking feeling is a universal part of owning a powersports vehicle. But what if you could not only prevent that scenario but also upgrade your ATV’s reliability and performance with one smart choice?

This is your complete guide. We’re going to break down everything you need to know about the battery for 2015 polaris sportsman 570. We’ll cover how to choose the perfect replacement, a step-by-step installation process, and the pro tips to make your new battery last for years. Let’s get your rig powered up and ready for the trail.

Why Your Sportsman 570 Battery Matters More Than You Think

It’s easy to think of your battery as just a little box that starts the engine. But on a modern ATV like the 2015 Sportsman 570, it’s the heart of the entire electrical system.

Your battery doesn’t just turn the starter. It powers the Electronic Fuel Injection (EFI) system, the engine control unit (ECU), your headlights, the digital display, and any accessories you’ve added.

Running a winch to pull a buddy out of the mud? That’s your battery. Using a light bar for a night ride? Your battery is doing the heavy lifting. A weak or failing battery can cause all sorts of gremlins, from poor starting to erratic engine performance. Choosing the right one is a true performance and reliability upgrade.

Decoding Battery Types: AGM vs. Lithium for Your 2015 Sportsman 570

When you start shopping, you’ll mainly see two types of batteries for your ATV: AGM and Lithium. Understanding the difference is key to making the right choice for your riding style and budget. This is one of the most important battery for 2015 polaris sportsman 570 tips we can offer.

The Reliable Workhorse: AGM (Absorbent Glass Mat) Batteries

AGM batteries are likely what came in your Sportsman from the factory. They are a type of lead-acid battery, but the electrolyte is absorbed in fiberglass mats, making them spill-proof and vibration-resistant—perfect for off-road abuse.

Pros: They are proven technology, generally more affordable, and perform reliably in a wide range of temperatures. They’re the go-to for most riders.
Cons: They are significantly heavier than lithium batteries and typically have a shorter overall lifespan (2-4 years on average).

The High-Performance Upgrade: Lithium (LiFePO4) Batteries

Lithium Iron Phosphate (LiFePO4) batteries are the new-school option. They are a massive leap forward in technology, offering significant advantages for the serious rider.

Pros: Incredibly lightweight (often saving 5-10 pounds!), a much longer service life (often 5+ years), and they hold a charge for longer periods of inactivity. This is a key part of the benefits of battery for 2015 polaris sportsman 570.
Cons: The main drawback is the higher upfront cost. Some older models can also struggle in deep-freezing temperatures, though modern lithium batteries have much-improved cold-weather performance.

If you’re looking for a more sustainable battery for 2015 polaris sportsman 570, lithium is a strong contender. Because they last so much longer, you’re replacing them less often, which means less waste. This makes them a more eco-friendly battery for 2015 polaris sportsman 570 in the long run.

The Definitive Guide to Choosing the Right Battery for 2015 Polaris Sportsman 570

Okay, you know the types. Now, how do you pick the specific one? Don’t just grab the first box that says it fits. You need to look at the specs to ensure you’re getting the power you need. This section is your essential battery for 2015 polaris sportsman 570 guide.

Key Specs to Check: CCA, Ah, and Dimensions

When you look at a battery, you’ll see a few key numbers. Here’s what they mean for you.

Cold Cranking Amps (CCA): This measures the battery’s ability to start your engine in cold weather. A higher CCA is better, especially if you ride in the winter or use thick engine oil.
Amp Hours (Ah): This is the gas tank of your battery. It tells you how much capacity it has. If you run a lot of accessories like a winch, heated grips, or light bars, a higher Ah rating is crucial.
Dimensions & Terminal Position: This is a simple but critical check. Make sure the battery’s physical size (Length x Width x Height) will fit in your Sportsman’s battery tray. Also, verify that the positive (+) and negative (-) terminals are on the correct sides!

The common factory replacement size for your ATV is a YTX20L-BS. Always use this as a starting point and double-check the dimensions of the battery you’re buying against your old one.

How to Replace the Battery for 2015 Polaris Sportsman 570: A Step-by-Step Guide

Ready to get your hands dirty? This is a straightforward job that most DIYers can handle in under 30 minutes. Following the correct procedure is key to doing it safely.

Tools You’ll Need

Socket wrench set (typically 8mm and 10mm sockets)
Safety glasses and gloves
Wire brush or battery terminal cleaner
Dielectric grease (optional, but highly recommended)

Safety First: Pre-Installation Checks

Before you touch a single bolt, put on your safety glasses and gloves. Batteries contain corrosive materials. Work in a well-ventilated area.

The most important safety rule is the order of disconnection and reconnection. Always disconnect the negative (-) terminal first, and reconnect it last. This prevents you from accidentally grounding your wrench between the positive terminal and the frame, which can cause dangerous sparks.

The Replacement Process

Locate the Battery: On your 2015 Sportsman 570, the battery is typically located under the seat. Remove the seat to gain access.
Remove the Hold-Down Bracket: There will be a bracket or strap holding the battery in place. Use your socket wrench to remove the bolts or unhook the strap.
Disconnect the Old Battery: Using your 10mm socket, loosen the nut on the negative (-) black terminal first. Wiggle the cable off the terminal and tuck it safely out of the way. Then, repeat the process for the positive (+) red terminal.
Remove the Old Battery: Carefully lift the old battery straight out of the tray. Be aware, AGM batteries are surprisingly heavy.
Clean the Area: Now is the perfect time to clean the battery tray and the cable terminals. Use a wire brush to scrub away any corrosion until you see shiny metal. A clean connection is a good connection.
Install the New Battery: Gently place your new battery into the tray, ensuring it’s oriented correctly with the terminals in the right position.
Connect the New Battery: Now, you’ll do the reverse of the disconnection process. Connect the positive (+) red cable first and tighten the bolt. Then, connect the negative (-) black cable last and tighten its bolt. This is one of the most critical battery for 2015 polaris sportsman 570 best practices.
Apply Dielectric Grease: For extra corrosion protection, apply a small dab of dielectric grease over the terminals after they are tightened.
Secure the Battery: Re-install the hold-down bracket or strap to ensure the battery is secure and won’t bounce around on the trail.
Test It: Put the key in the ignition and turn it on. You should see the display light up brightly. Now, fire it up! It should start stronger than ever.

Proactive Care: Your Battery for 2015 Polaris Sportsman 570 Care Guide

A new battery is a great start, but proper care will maximize its lifespan and save you money. Don’t just install it and forget it.

The Power of a Battery Tender

The single best thing you can do for your battery is to use a smart battery tender (or maintainer) when you’re not riding. ATVs often have small power draws even when off. A tender keeps the battery at an optimal charge without overcharging it, which is crucial for long-term health, especially during winter storage.

Regular Terminal Cleaning and Inspection

Every few months, pop the seat off and take a look at your battery terminals. Check for any signs of fuzzy blue or white corrosion. If you see any, disconnect the battery (negative first!) and clean the terminals with a wire brush.

Winter Storage Best Practices

If you’re storing your Sportsman for the winter, your battery needs attention. The best practice is to remove the battery, store it in a cool, dry place (off of a concrete floor), and keep it connected to a battery tender. This prevents it from slowly dying over the cold months.

Troubleshooting Common Problems with a Battery for 2015 Polaris Sportsman 570

Sometimes, a problem that seems like a bad battery is actually something else. Here are a few common problems with battery for 2015 polaris sportsman 570 and how to diagnose them.

My ATV Clicks But Won’t Start

A single, loud click is often a sign of a poor connection or a very discharged battery. Double-check that your terminal bolts are tight. If they are, try charging the battery. If it still clicks, your starter solenoid might be the issue.

The Battery Keeps Dying

If your new battery dies after a few rides, you may have a charging system issue or a “parasitic draw.” Your ATV’s stator is supposed to recharge the battery while the engine is running. If the stator is failing, it won’t. A parasitic draw is when an electrical component continues to draw power even when the key is off. If you suspect either, it might be time to see a professional mechanic.

Signs of a Swollen or Leaking Battery

If you ever see your battery case bulging, swelling, or leaking fluid, replace it immediately. This is a sign of internal failure, and the battery is no longer safe to use.

Frequently Asked Questions About the 2015 Polaris Sportsman 570 Battery

What is the stock battery size for a 2015 Polaris Sportsman 570?

The most common OEM equivalent size is a YTX20L-BS. However, it’s always best practice to remove your old battery and confirm its part number and physical dimensions before ordering a new one, as variations can exist.

Can I use a car battery in my Sportsman 570?

No, you should not. Car batteries are not designed to handle the intense vibration of off-road use. They are also not sealed, which poses a risk of acid spills during aggressive riding. Stick with a powersports-specific AGM or Lithium battery.

How long should a Sportsman 570 battery last?

With proper care, a quality AGM battery should last 2 to 4 years. A lithium battery can often last 5 years or more. If you neglect maintenance and let it sit dead for long periods, you can kill a new battery in less than a year.

Is a lithium battery worth the extra cost?

It depends on your priorities. If you want the lightest possible weight for better performance, the longest possible lifespan, and don’t mind the higher upfront cost, then yes, lithium is an excellent upgrade. If you are a casual rider on a budget, a quality AGM is a perfectly reliable and cost-effective choice.

Your Sportsman’s battery is the unsung hero of every ride. By choosing the right type for your needs, installing it correctly, and giving it a little regular care, you’re ensuring your ATV is ready to fire up whenever adventure calls. Now you have the knowledge to make a smart purchase and keep your machine running strong.

Get out there, stay safe, and have a blast on the trails!

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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.