There’s nothing quite like the silence when you hit the ignition on your Sportsman 570 and get nothing back but a sad little click. We’ve all been there. A dead battery can stop a great day on the trails before it even starts, leaving you stranded in the garage instead of kicking up mud.
You probably agree that figuring out the exact replacement is often the most frustrating part. Is it this size? Does that part number work? Will it have enough juice for my winch?
Promise yourself this: you’re done with the guesswork. This guide is your definitive, no-fluff resource for everything related to the 2018 Polaris Sportsman 570 battery size. We’ll give you the exact specs, walk you through choosing the best battery type for your needs, and provide a step-by-step installation guide that anyone can follow.
By the time you’re done here, you’ll have the confidence to get the right power source for your rig and get back on the trail, fast.
Why Getting the Right 2018 Polaris Sportsman 570 Battery Size is Non-Negotiable
You might be tempted to think, “a battery is a battery.” But when it comes to your ATV, picking the wrong size can lead to a world of headaches. It’s more than just getting the engine to turn over; it’s about safety, reliability, and protecting your machine’s electrical system.
Getting it wrong introduces some common problems with 2018 polaris sportsman 570 battery size selection. An oversized battery simply won’t fit in the battery tray, and a smaller one will slide around, risking damage from vibration and shorting out against the frame. This isn’t a place for “close enough.”
The Triple Threat of an Improperly Sized Battery
Here’s what you’re up against if you grab the wrong battery off the shelf:
- Physical Fitment Issues: The battery compartment on your Sportsman 570 is precision-engineered. A battery that’s too tall, wide, or long won’t seat properly. This can prevent the hold-down bracket from securing it, which is a major safety hazard on rough terrain.
- Incorrect Terminal Orientation: ATVs have short battery cables. If the positive (+) and negative (-) terminals are on the wrong sides, your cables might not reach. Never try to stretch your battery cables; it puts stress on the connections and can cause them to fail.
- Insufficient Power: A smaller, under-spec’d battery might not have the Cold Cranking Amps (CCA) to start your engine in cold weather or the reserve capacity to run accessories like a winch, light bar, or heated grips without draining completely.
Your Definitive 2018 Polaris Sportsman 570 Battery Size Guide
Alright, let’s get straight to the point. You need the right size, and you need it now. The factory-specified battery for the 2018 Polaris Sportsman 570 is a standard power sports battery size.
The most common and universally recognized part number for this size is:
YTX20L-BS
This part number is your golden ticket. Most reputable battery brands like Yuasa, MotoBatt, and Duracell use this code. When you’re shopping, look for “YTX20L-BS” or a direct equivalent. The “L” in the part number signifies that the negative terminal is on the left side when you’re looking at the front of the battery. This is critical for your Sportsman.
Key Specifications to Double-Check
While the part number is usually enough, here are the physical dimensions and core specs to confirm you have the perfect match. This is one of the most important 2018 polaris sportsman 570 battery size tips we can offer.
- Dimensions (L x W x H): Approximately 6.87″ x 3.43″ x 6.12″ (or 175mm x 87mm x 155mm)
- Voltage: 12 Volts
- Capacity: 18 Ah (Amp Hours)
- Cold Cranking Amps (CCA): 270 or higher is recommended
Pro Tip: Before you head to the store or order online, take two minutes to pop open your seat and measure your old battery. It’s the ultimate confirmation and one of our top 2018 polaris sportsman 570 battery size best practices.
Beyond the Size: Choosing the Best Battery Type for Your Ride
Knowing the size is half the battle. Now, you need to choose the technology that powers your adventures. The original battery in your Sportsman was likely a conventional lead-acid or an AGM battery. But you have options, and each has its pros and cons.
Conventional Lead-Acid (Flooded)
These are the old-school, budget-friendly batteries. They require you to occasionally top them off with distilled water. They get the job done but are prone to spilling and require more maintenance. We generally recommend upgrading from this type.
Absorbed Glass Mat (AGM)
This is the most popular and recommended choice for most riders. The electrolyte is absorbed in fiberglass mats, making the battery spill-proof and vibration-resistant—perfect for off-roading. They are maintenance-free and offer excellent performance for the price. The benefits of an AGM in your 2018 polaris sportsman 570 battery size are significant for trail reliability.
Lithium-Ion (LiFePO4)
Lithium is the premium, high-performance option. The main advantages are a massive weight reduction (often 70% lighter) and a much longer lifespan. They also provide stronger, more consistent cranking power. The downside is a higher upfront cost, but for serious riders who want the best, it’s a worthy investment.
How to Safely Replace Your Sportsman 570 Battery: A Step-by-Step Walkthrough
Ready to get your hands dirty? This section covers how to 2018 polaris sportsman 570 battery size replacement safely and correctly. It’s a simple job that only takes about 15-20 minutes with the right tools.
Tools and Safety Gear You’ll Need
- Safety Glasses
- Gloves
- Socket Wrench or Nut Driver (usually 10mm)
- Phillips Head Screwdriver
- Terminal Cleaning Brush or a wire brush
- New YTX20L-BS (or equivalent) battery
Step-by-Step Installation Instructions
- Access the Battery: On the 2018 Sportsman 570, the battery is located under the seat. Remove the seat by pulling up on the latch at the rear.
- 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, pull the cable away from the battery post and tuck it aside so it can’t accidentally touch it.
- Disconnect the Positive Terminal: Now, do the same for the red (positive, +) terminal. Remove the red plastic cover, loosen the nut, and move the cable away.
- Remove the Hold-Down Bracket: There is a rubber strap or a metal bracket holding the battery in place. Unhook the strap or use your screwdriver/wrench to remove the bracket.
- Lift Out the Old Battery: Carefully lift the old battery straight up and out of the tray. Be aware that AGM batteries are still quite heavy.
- Clean the Area: Take a moment to clean the battery tray and the cable terminals with your wire brush. A clean connection is a good connection.
- Install the New Battery: Place your new battery into the tray, making sure it’s seated flat. Ensure the terminals are oriented correctly (negative on the left).
- Secure the Hold-Down Bracket: Re-install the bracket or strap to hold the new battery firmly in place. It should not be able to wiggle at all.
- Connect the Positive Terminal First: When reinstalling, you do the reverse of removal. Attach the red (positive, +) cable to the positive terminal and tighten the nut securely. Replace the red protective cap.
- Connect the Negative Terminal Last: Finally, connect the black (negative, -) cable to the negative terminal and tighten it down. This prevents any accidental sparks if your wrench touches the frame.
- Final Check: Give both cables a gentle tug to ensure they are tight. Put the seat back on, and you’re ready to fire it up!
Pro Tips for a Longer Life: Your 2018 Polaris Sportsman 570 Battery Size Care Guide
A new battery is a significant investment. With a little care, you can maximize its lifespan and ensure your ATV is always ready to go. This is your essential 2018 polaris sportsman 570 battery size care guide.
- Use a Battery Tender: If you don’t ride for more than a couple of weeks, especially in the winter, connect a smart battery tender (or maintainer). It keeps the battery optimally charged without overcharging it, drastically extending its life.
- Keep Terminals Clean: Every few months, check the terminals for corrosion (a white or greenish powder). Clean them with a wire brush and a solution of baking soda and water if needed.
- Check Connections: Vibration can loosen terminal bolts over time. Before a big ride, give them a quick check to make sure they are snug.
Sustainable Power: Eco-Friendly Battery Choices and Disposal
Being an off-roader means respecting the great outdoors. Part of that responsibility includes how we handle our parts, especially batteries. Thinking about a sustainable 2018 polaris sportsman 570 battery size solution is easier than you think.
The most important step is proper disposal. Car batteries are full of lead and acid, which are extremely harmful to the environment. Never throw an old battery in the regular trash.
Your best bet for an eco-friendly 2018 polaris sportsman 570 battery size plan is simple: when you buy a new battery, bring the old one with you. Almost every auto parts store that sells batteries is required to accept old ones for recycling. They will often give you a “core charge” refund for doing so, putting a few bucks back in your pocket for doing the right thing.
Frequently Asked Questions About the 2018 Polaris Sportsman 570 Battery
What are the signs my Sportsman 570 battery is failing?
The most obvious sign is a slow crank or a “clicking” sound when you hit the start button. Other signs include dimming headlights when the engine isn’t running, difficulty starting in the cold, or a battery that won’t hold a charge for more than a few days.
Can I use a battery with a higher CCA rating?
Absolutely! As long as the physical dimensions and terminal locations are the same (YTX20L-BS size), a higher CCA rating is a great upgrade. It provides better starting power in cold weather and is a good idea if you run a winch or other high-draw accessories.
How long should a Polaris Sportsman battery last?
With proper care and the use of a battery tender during periods of inactivity, a quality AGM battery should last between 3 to 5 years. A lithium battery can last even longer, often 8 to 10 years.
Do I need to charge my new battery before installing it?
Most AGM and Lithium batteries come charged, but it’s always a best practice to put it on a smart charger for a few hours before installation. This ensures it’s at 100% capacity from the very first start, which helps with its overall lifespan.
Choosing and installing the right battery for your 2018 Sportsman 570 is a straightforward job that makes a world of difference in your quad’s reliability. By following this guide, you’ve armed yourself with the knowledge to make a smart purchase and perform the replacement safely.
Now, with a fresh source of power locked in, you can stop worrying about starting and get back to what matters most. Stay safe, ride hard, and enjoy the trails!
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