There’s nothing worse than gearing up for a big day on the trails, turning the key on your Commander 800, and hearing that soul-crushing “click… click… click.” A dead battery can stop an adventure before it even starts, leaving you stranded in the garage or, even worse, deep in the backcountry.
We’ve all been there, and that frustration is exactly why we put this guide together. A reliable battery is the heart of your UTV’s electrical system, powering everything from the starter to your winch and light bars.
Promise yourself no more canceled rides. We’re here to give you the expert, hands-on knowledge you need. In this complete guide, you’ll learn how to spot a failing can am commander 800 battery, choose the perfect replacement, install it safely, and maintain it like a pro to ensure you always have the power you need when you need it.
Recognizing the Signs: Is Your Can Am Commander 800 Battery Failing?
Before your battery leaves you completely stranded, it will usually give you a few warning signs. Paying attention to your machine’s behavior is the first step in avoiding a dead-battery disaster. Here are some of the most common problems with a can am commander 800 battery that signal it’s on its last legs.
Slow Cranking or a Hesitant Start
One of the most obvious signs is a change in how your Commander starts. If the engine turns over more slowly than usual, making a “rur-rur-rur” sound instead of a crisp “vroom,” it’s struggling. This indicates the battery doesn’t have enough cranking amps to turn the engine over with authority.
Dimming Lights and Electrical Gremlins
Your battery powers more than just the starter. If you notice your headlights dim significantly when you start the engine, or if your dash lights flicker, it’s a classic sign of a weak battery. The starter motor is drawing all the available power, leaving little for anything else.
The Dreaded “Clicking” Sound
That rapid clicking noise when you turn the key is the sound of the starter solenoid engaging and disengaging because it isn’t receiving enough voltage from the battery to fully activate the starter motor. While other issues can cause this, a weak or dead battery is the number one culprit.
Physical Signs of Damage
Always give your battery a quick visual inspection. Look for a swollen or bloated battery case, which can be caused by overheating or internal failure. Also, check for any cracks or leaks. A leaking battery is a serious safety hazard and must be replaced immediately.
How to Test Your Battery’s Health
Don’t just guess. A simple digital multimeter can give you a definitive answer. Set it to DC Volts and touch the red probe to the positive (+) terminal and the black probe to the negative (-) terminal. A healthy, fully charged battery should read around 12.6 to 12.8 volts. A reading below 12.2 volts suggests it needs a good charge, and if it won’t hold a charge above 12.4 volts after charging, it’s likely time for a replacement.
Choosing the Right Powerhouse: Your Can Am Commander 800 Battery Guide
When it’s time to buy a new battery, you’ll find a few options. Choosing the right one depends on your riding style, budget, and the accessories you run. This can am commander 800 battery guide will break down the key factors to consider.
Understanding Battery Types: AGM vs. Lithium
The two main players in the powersports world are AGM and Lithium-ion. Each has distinct benefits.
- AGM (Absorbed Glass Mat): This is the workhorse and likely what your Commander came with from the factory. The acid is absorbed in fiberglass mats, making them spill-proof and vibration-resistant—perfect for off-roading. They are reliable, cost-effective, and perform well in a wide range of temperatures.
- Lithium-ion (LiFePO4): The high-performance option. Lithium batteries are incredibly lightweight (often saving 5-10 lbs), offer stronger cranking power, and have a much longer lifespan than AGM batteries. The downsides are a higher initial cost and potentially reduced performance in extreme cold (below freezing).
Key Specs to Look For: CCA, Ah, and Dimensions
Don’t just grab the first battery you see. Check these three key specs to ensure you’re getting the right fit and power for your machine.
- Cold Cranking Amps (CCA): This measures the battery’s ability to start an engine in cold temperatures. More is generally better, especially if you ride in chilly weather or run a lot of accessories.
- Amp Hours (Ah): This tells you about the battery’s capacity—how long it can provide power. If you use a winch, stereo, or extensive lighting, a higher Ah rating is a huge plus.
- Dimensions: This one is critical! A battery with monster specs is useless if it doesn’t fit in the battery tray. Always measure your old battery or check your owner’s manual for the correct group size (a common size for the Commander 800 is the YTX20L-BS).
The Swap Out: How to Replace Your Can Am Commander 800 Battery
Replacing the battery is a straightforward job any DIYer can handle with the right tools and a focus on safety. Follow these steps for a smooth and safe installation. This is how to can am commander 800 battery replacement is done right.
Safety First: Essential Tools and Precautions
Before you start, gather your tools and get your safety gear on. You’ll need:
- A socket set or wrenches (typically 10mm)
- Safety glasses
- Gloves
- A terminal cleaning brush
- Dielectric grease or terminal protector spray
Safety Warning: Always work in a well-ventilated area. Batteries can release flammable gases. Most importantly, metal tools can cause a dangerous short circuit if they touch the positive terminal and the frame at the same time.
The Step-by-Step Replacement Process
- Locate the Battery: On most Can Am Commander 800 models, the battery is located under the driver’s seat. You may need to remove the seat to gain full access.
- Disconnect the Negative Terminal: Using your wrench, always loosen and remove the cable from the negative (-) terminal first. It’s usually black. Tuck the cable aside so it can’t accidentally touch the terminal.
- Disconnect the Positive Terminal: Now, remove the cable from the positive (+) terminal. This one is usually red and may have a rubber cover.
- Remove the Hold-Down Bracket: There will be a bracket or strap holding the battery in place. Unbolt or unlatch it and set it aside.
- Lift Out the Old Battery: Carefully lift the old battery straight up and out of the tray. Be aware that AGM batteries are surprisingly heavy.
- Clean the Tray and Terminals: Use a wire brush to clean any corrosion off the cable terminals. A mix of baking soda and water works great for neutralizing any acid residue. Wipe the battery tray clean.
- Install the New Battery: Place your new battery into the tray, ensuring it’s oriented correctly. Secure it with the hold-down bracket. Don’t overtighten, but make sure it’s snug and won’t move.
- Connect the Positive Terminal: Attach the red cable to the positive (+) terminal first and tighten the bolt securely.
- Connect the Negative Terminal: Now, attach the black cable to the negative (-) terminal last and tighten it. This order prevents accidental sparks.
- Protect the Terminals: Apply a thin layer of dielectric grease or a coat of terminal protector spray to both terminals to prevent future corrosion.
Once everything is connected, start your Commander to ensure it’s all working correctly. You’re now ready to ride!
Maximize Lifespan: A Can Am Commander 800 Battery Care Guide
A new battery is a significant investment, so you want it to last as long as possible. Following this can am commander 800 battery care guide will dramatically extend its life and ensure it’s always ready for action. These are the best practices you need to know.
The Magic of a Battery Tender
The single best thing you can do for your battery, especially during the off-season or periods of inactivity, is to use a smart battery charger, also known as a tender or maintainer. Unlike a regular charger, a tender monitors the battery’s voltage and delivers a slow, steady charge only when needed, preventing overcharging and keeping it in optimal condition.
Keep It Clean, Keep It Powerful
Corrosion on your battery terminals acts like resistance, preventing a solid electrical connection. Periodically check your terminals for any white or greenish buildup. If you see any, disconnect the battery (negative first!) and clean it off with a terminal brush. A clean connection ensures your battery can deliver and receive a full charge.
Winch and Accessory Wisdom
High-draw accessories like a big winch or a powerful sound system can put a massive strain on your battery. Whenever possible, run the engine while operating your winch. The machine’s charging system (the stator) will help supplement the battery’s power, preventing a deep discharge that can shorten its life.
The Green Trail: Sustainable and Eco-Friendly Battery Tips
Being a responsible rider means taking care of our trails and our planet. Your battery contains hazardous materials, so proper handling is a must. These sustainable can am commander 800 battery tips are easy to follow.
Why Proper Disposal is Non-Negotiable
Lead-acid batteries contain lead and sulfuric acid, both of which are extremely harmful to the environment if they end up in a landfill. An eco-friendly can am commander 800 battery plan starts with responsible disposal.
How to Easily Recycle Your Old Battery
The good news is that lead-acid batteries are one of the most recycled consumer products in the world. Nearly every auto parts store that sells batteries will take your old one back for recycling, often for free. When you buy a new battery, you’ll usually pay a “core charge,” which is refunded to you when you bring the old one back. It’s a simple and effective system.
Frequently Asked Questions About the Can Am Commander 800 Battery
What size battery does a Can Am Commander 800 use?
The most common factory replacement size is the YTX20L-BS. However, models and years can vary slightly. The absolute best practice is to check the label on your existing battery or consult your owner’s manual before purchasing a new one to guarantee a perfect fit.
How long should my Commander’s battery last?
With proper care and maintenance, you can expect a quality AGM battery to last between 3 to 5 years. Factors like extreme temperatures, long periods of storage without a tender, and heavy accessory use can shorten this lifespan. A premium Lithium battery can often last longer, up to 8 years or more.
Can I use a car battery in my Commander 800?
We strongly advise against it. Car batteries are not designed to handle the intense vibration of off-roading, which can lead to internal damage and premature failure. They are also typically the wrong size and have different terminal configurations.
My new battery keeps dying. What could be the problem?
If a new, healthy battery won’t stay charged, you likely have an issue with your UTV’s charging system or a parasitic drain. A parasitic drain is when an electrical component continues to draw power even when the key is off. Common culprits are aftermarket stereos or lights. The other possibility is a faulty stator or voltage regulator, which means your machine isn’t recharging the battery as you ride. If you suspect this, it’s a good idea to have a qualified technician diagnose the problem.
Your Can Am Commander’s battery is the unsung hero of every ride. By understanding how to choose the right one, install it safely, and perform simple maintenance, you’re not just replacing a part—you’re investing in reliability and peace of mind.
Now you have the knowledge and the power. Get those terminals clean, hook up that tender, and hit the trails with the confidence that your machine will roar to life every single time. Stay safe and have fun out there!
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