There’s nothing quite like the sinking feeling of hitting the starter on your Can-Am DS 250 and getting nothing but a sad little ‘click’. You’re all geared up, the trail is calling your name, but your ATV is dead in the water. More often than not, the culprit is a dead or incorrect battery.
We’ve all been there. It’s a frustrating, ride-ending problem that can feel overwhelming. But what if you could solve it for good?
This is your complete, no-nonsense guide to understanding the can am ds 250 battery size. We promise to cut through the confusion and give you the confidence to select, install, and maintain the perfect battery. We’ll cover what “size” really means, compare battery types, walk you through a safe installation, and share pro tips to maximize your battery’s life.
What “Can-Am DS 250 Battery Size” Really Means (It’s More Than Just Dimensions)
When we talk about battery “size,” it’s easy to think only about the physical length, width, and height. While those are critical for a proper fit, several other factors are just as important for getting your DS 250 fired up reliably every time. This is the foundation of our can am ds 250 battery size guide.
Physical Dimensions: The First Check
This is the most straightforward part. Your DS 250 has a specifically designed battery tray or box. The battery you choose must fit securely in this space. A battery that’s too large won’t fit, and one that’s too small will vibrate excessively, leading to internal damage and a short lifespan.
Always measure your existing battery or the battery tray itself with a tape measure before you buy. Write down the Length (L), Width (W), and Height (H) in millimeters or inches.
Cold Cranking Amps (CCA): The Power to Start
Cold Cranking Amps, or CCA, is a measure of a battery’s ability to start an engine in cold temperatures. Specifically, it’s the number of amps a 12-volt battery can deliver at 0°F (-18°C) for 30 seconds while maintaining a voltage of at least 7.2 volts.
For your DS 250, a higher CCA means a more reliable start, especially on chilly mornings. While you don’t need a massive CCA rating, you should never go below the manufacturer’s recommended specification.
Amp Hours (Ah): The Stamina for Your Accessories
Amp Hours (Ah) measures the battery’s total energy capacity. Think of it as the size of the “gas tank” for your electrical system. A battery with a 10 Ah rating can theoretically deliver 1 amp of power for 10 hours.
If you run extra accessories like a winch, light bars, or a GPS, a battery with a slightly higher Ah rating can be beneficial, providing more reserve power. However, this often comes with a larger physical size, so you need to balance capacity with fitment.
Terminal Configuration: Getting the Polarity Right
This is a detail that trips up even experienced DIYers. Battery terminals are not always in the same place. You must match the polarity—the position of the positive (+) and negative (-) terminals—to your ATV’s battery cables.
Look at your old battery from the front side. Note whether the positive terminal is on the left or the right. Getting this wrong means your cables won’t reach, and you’ll be heading back to the parts store.
The Standard Can-Am DS 250 Battery Size and OEM Specs
For most Can-Am DS 250 models, the standard OEM replacement battery size is the YTX9-BS. This is a universal part number that tells you everything you need to know about the battery’s specifications across different brands.
Unpacking the OEM Battery Part Number
Let’s break down what “YTX9-BS” means:
- YT: This designates the manufacturer family (in this case, often Yuasa or a compatible brand).
- X: Indicates it’s a high-performance AGM battery.
- 9: This is a reference number for the power output and physical size group. A “9” series battery will have similar dimensions and power ratings regardless of the brand.
- BS: This means the battery is shipped with the acid separate in a bottle (“Bottle Supplied”) and needs to be filled and sealed by the user or retailer before installation.
A typical YTX9-BS battery will have dimensions around 150mm L x 87mm W x 105mm H and a CCA rating between 120 and 135.
Why Sticking to OEM Specs is Often a Safe Bet
Can-Am engineers designed the DS 250’s electrical system, including the charging system (stator and regulator/rectifier), to work perfectly with the OEM battery specs. Sticking to a YTX9-BS equivalent ensures compatibility and reliable performance without overloading your components.
When to Consider an Upgrade
You might consider an upgrade if:
- You live in a very cold climate and want a higher CCA for easier starting.
- You have added power-hungry accessories and need more reserve capacity (Ah).
- You want to switch to a different battery chemistry, like Lithium, for weight savings and longer life.
Even when upgrading, you should look for a battery in the same physical size group to ensure a drop-in fit.
Choosing Your Perfect Replacement: A Can-Am DS 250 Battery Size Guide
Now that you know the specs, it’s time to choose the right type of battery for your needs. There are several options, each with its own pros and cons. Understanding the benefits of can am ds 250 battery size selection is key to making the right choice.
Lead-Acid vs. AGM vs. Lithium: The Big Three
- Conventional Lead-Acid: These are the old-school, traditional batteries. They are the cheapest option but require periodic maintenance, like topping off the water levels. They are also prone to leaking if the ATV tips over, making them a poor choice for serious off-roading.
- AGM (Absorbent Glass Mat): This is the most common and recommended type for the DS 250. The “BS” in YTX9-BS indicates an AGM battery. The acid is absorbed into fiberglass mats, making them spill-proof and vibration-resistant. They are maintenance-free and offer a great balance of performance and price.
- Lithium (LiFePO4): This is the premium, high-performance option. Lithium batteries are incredibly lightweight (often saving 5-7 pounds), have a much longer service life (5+ years), and can hold a charge for months. The main downside is their higher upfront cost and sensitivity to certain types of chargers.
Eco-Friendly and Sustainable Can-Am DS 250 Battery Size Options
If you’re looking for a more sustainable can am ds 250 battery size choice, lithium is a strong contender. While the manufacturing process is complex, their significantly longer lifespan means you’re buying and discarding fewer batteries over the life of your ATV.
Furthermore, nearly all battery types, including lead-acid and AGM, are highly recyclable. Always take your old battery back to the retailer or a dedicated recycling center to be disposed of properly.
How to Replace Your Can-Am DS 250 Battery: A Step-by-Step Walkthrough
Ready to get your hands dirty? This section covers how to can am ds 250 battery size your replacement and install it safely. This is a straightforward job that any DIYer can handle with the right tools and a little caution.
Safety First: Gear Up and Disconnect
Before you start, park your ATV on a level surface and turn the ignition off. Always wear safety glasses and gloves. Batteries contain corrosive acid and can produce flammable gases.
Tools You’ll Need
- Safety Glasses and Gloves
- Socket Set or Wrenches (usually 8mm or 10mm)
- Phillips Head Screwdriver
- Terminal Cleaning Brush or Sandpaper
- Dielectric Grease (optional but recommended)
Step 1: Locate and Access the Battery
On the Can-Am DS 250, the battery is typically located under the seat. Remove the seat by releasing the latch, usually found at the rear of the vehicle.
Step 2: Disconnect the Old Battery (Negative First!)
This is the most important safety step. Using your wrench, always loosen and remove the cable from the negative (-) terminal first. This prevents accidental short circuits if your tool touches the frame while you’re working on the positive side.
Once the negative cable is disconnected and tucked away, you can safely remove the cable from the positive (+) terminal.
Step 3: Remove the Old Battery and Clean the Tray
Remove the battery hold-down bracket. Carefully lift the old battery out of the tray. Inspect the tray and cable ends for any corrosion (a white or greenish powder). Clean any corrosion with a wire brush and a mixture of baking soda and water.
Step 4: Install the New Battery
Place your new, correctly sized battery into the tray. Ensure it sits flat and is not rocking. Reinstall the hold-down bracket and tighten it so the battery is secure but don’t overtighten and crack the case.
Step 5: Connect the New Battery (Positive First!)
When connecting the new battery, you’ll do the reverse of the removal process. Connect the positive (+) cable first and tighten the bolt securely.
Then, connect the negative (-) cable to its terminal. You may see a tiny, harmless spark as you make the connection—this is normal. Tighten the bolt.
Step 6: Secure Everything and Test
Give both cables a gentle wiggle to ensure they are tight. Apply a thin layer of dielectric grease to the terminals to prevent future corrosion. Reinstall the seat, turn the key, and fire up your DS 250!
Common Problems with Can-Am DS 250 Battery Size and How to Avoid Them
Even with the best intentions, things can go wrong. Here are some common problems with can am ds 250 battery size selection and installation, and how to steer clear of them.
“It’s Too Tall/Wide!” – The Mismeasurement Mistake
This happens when you rely solely on a website’s fitment guide without double-checking your own machine. Always measure your battery tray before ordering. A few millimeters can make all the difference.
“The Terminals are on the Wrong Side!” – The Polarity Problem
You ordered a battery that fits perfectly, but the cables won’t reach. This is a classic polarity mix-up. Before you buy, look at your old battery and confirm if the positive terminal is on the left or right.
“My ATV Still Won’t Start!” – Beyond the Battery
If a new, fully charged battery doesn’t solve your starting issue, the problem lies elsewhere. Check your main fuse, starter solenoid, starter motor, or the charging system. A faulty stator or regulator can kill even the best new battery.
Premature Battery Death: The Real Culprits
A battery that dies in a year or less is rarely a “bad battery.” It’s usually a victim of neglect. The top killers are letting it sit for long periods without a charge (sulfation) and excessive vibration from a loose hold-down bracket.
Pro Tips: A Can-Am DS 250 Battery Size Care Guide for Maximum Life
Want to get 3, 4, or even 5+ years out of your new battery? Follow these can am ds 250 battery size best practices and care tips.
The Power of a Battery Tender
The single best investment you can make for battery health is a smart battery charger, also known as a tender or maintainer. If you’re not riding your DS 250 for more than a couple of weeks, hook it up. It will keep the battery at an optimal charge without overcharging it.
Keep Those Terminals Clean
At every oil change, take a moment to inspect your battery terminals. Clean off any corrosion that has started to form. A clean connection is an efficient connection.
Regular Voltage Checks: Your Early Warning System
A healthy, fully charged 12-volt AGM battery should read around 12.8 volts or higher with a multimeter when the engine is off. If you see it consistently sitting at 12.4 volts or less, it’s a sign it’s losing its ability to hold a charge and may be nearing the end of its life.
Frequently Asked Questions About the Can-Am DS 250 Battery Size
What is the stock battery size for a Can-Am DS 250?
The most common stock and replacement battery size is the YTX9-BS. This part number corresponds to specific physical dimensions, power ratings, and an AGM chemistry that is ideal for the DS 250.
Can I use a bigger battery in my DS 250?
Physically, you are limited by the size of the battery tray. Electrically, using a battery with a slightly higher CCA or Ah rating is generally fine, but a significantly more powerful battery may not be necessary and won’t be properly maintained by the stock charging system.
How long should a Can-Am DS 250 battery last?
With proper care, a quality AGM battery should last 3 to 5 years. A lithium battery can last even longer, from 5 to 8 years. Neglect, however, can kill a new battery in less than a season.
Is a lithium battery worth the extra cost for a DS 250?
It depends on your priorities. If you are a performance-oriented rider looking for maximum weight savings and longevity, and don’t mind the higher upfront cost, then yes. For the average trail rider, a quality AGM battery offers the best value.
My battery keeps dying, what should I check first?
First, ensure the battery is being fully charged. Use a multimeter to check the voltage while the ATV is running at a fast idle; you should see a reading between 13.5 and 14.5 volts. If it’s lower, you may have a charging system problem. If it’s higher, your regulator may be faulty and is “cooking” your battery.
Choosing the right can am ds 250 battery size is about more than just finding something that fits. It’s about matching the power, performance, and reliability your ATV was designed for. By understanding the key specs like CCA and Ah, and by following a proper installation and maintenance routine, you can eliminate one of the most common frustrations in the off-road world.
Now you have the expert knowledge to tackle this job with confidence. Get the right battery, install it safely, and spend less time in the garage and more time where you belong—out on the trail. Stay powered up and ride safe!
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