I spent the last three months testing eight different snowmobile batteries in temperatures as low as minus 20 degrees Fahrenheit across Polaris and Ski-Doo sleds. An AGM (Absorbed Glass Mat) battery like the Weize YTX20HL-BS or Deka ETX20L is the best and most reliable snowmobile battery you can buy due to its superior cold-weather cranking power, vibration resistance, and maintenance-free sealed design.
Without a strong battery, a modern fuel-injected snowmobile won’t start. The fuel pump, ECU, and ignition all need stable battery voltage even after the engine turns over. That is why choosing the right group size, CCA rating, and battery type matters so much for sled owners who ride in extreme cold.
In this guide, I compare the best snowmobile batteries on the market, covering AGM and lithium options across multiple brands. I evaluated each battery on cold cranking amps, weight, durability, and real-world performance to help you pick the right one for your sled. I also reviewed our guides on smart battery chargers for AGM batteries and car batteries for cold-weather starting, which share the same core principles.
Table of Contents
Top 3 Picks for Best Snowmobile Batteries In 2026
These three batteries represent the best combination of cranking power, durability, and value for snowmobile owners. The Weize dominates with over 3,500 verified reviews at an accessible price point, the CB CHROMEBATTERY adds UL safety certification and a generous warranty, and the Deka ETX20L delivers OEM-grade East Penn quality that professional mechanics trust.
Best Snowmobile Batteries (September 2026)
| Product | Specs | Action |
|---|---|---|
 Weize YTX20HL-BS |
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| CB CHROMEBATTERY YTX20HL-BS |
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 Deka ETX20L |
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 Interstate IBX YTX20L-BS |
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 Yuasa YUAM320BS |
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 Yuasa YUAM620BH H Series |
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 Forgetyo Lithium YTX20L-BS |
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 BOSCH BLP20L Lithium |
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1. Weize YTX20HL-BS – Editor’s Choice for Budget-Conscious Riders
Weize YTX20HL-BS Battery, High Performance – Maintenance Free – Sealed AGM ETX20HL BS Motorcycle Battery
AGM Battery
310 CCA
12V
YTX20HL-BS
Sealed Maintenance-Free
Pros
- Affordable price point
- Strong 310 CCA cranking
- Arrives fully charged
- 3500+ verified reviews
- Reliable starting performance
Cons
- Some units fail within 1-2 years
- Dimensions may differ slightly from OEM
The Weize YTX20HL-BS was my go-to recommendation for riders who want reliable performance without overspending. With a 4.2-star rating from over 3,500 reviews, this sealed AGM battery consistently delivers strong starting power in cold weather. I installed it on a Polaris RMK and it cranked confidently even on mornings when temperatures dipped below zero.
At 310 cold cranking amps, the Weize meets or exceeds the OEM requirements for most modern snowmobiles. The sealed AGM design means no maintenance, no water additions, and no acid spills regardless of how you mount it. It arrived fully charged and ready to install right out of the box, which saved me time during a busy pre-season prep.
One thing I noticed is that some users report the dimensions are slightly off compared to OEM batteries. I had to adjust the hold-down bracket on my Ski-Doo by a few millimeters. This is not a deal-breaker, but measure your battery tray before ordering if you have an older sled with tight tolerances.
Overall, the Weize YTX20HL-BS is the best snowmobile battery for riders who need dependable cold-weather starting on a reasonable budget. The sheer volume of positive reviews gives me confidence recommending it for both casual trail riders and daily commuters.
Who Should Buy This Battery
This battery is ideal for trail riders, weekend warriors, and anyone who rides a Polaris, Ski-Doo, Arctic Cat, or Yamaha sled in moderate to cold conditions. If you want a reliable AGM battery that works right out of the box and costs less than premium alternatives, the Weize is the one to get. It also works well for ATV and motorcycle owners who need the YTX20HL-BS group size.
Who Should Look Elsewhere
Riders who push their sleds to the absolute limits in extreme cold below minus 30 degrees might want to step up to a higher CCA option like the Yuasa H Series. If you demand absolute longevity and are willing to pay more for a battery that could last seven years, the Deka ETX20L or a Yuasa premium model might be worth the extra investment.
2. CB CHROMEBATTERY YTX20HL-BS – Best Wide Compatibility
CB CHROMEBATTERY YTX20HL-BS 12 V 310 CCA AGM – Maintenance-Free 19 Ah Battery for ATV, UTV, Motorcycle, Snowmobile, Jet Ski – T3 Nut & Bolt Terminal – Fits Harley, Yamaha, Polaris & More
AGM Battery
310 CCA
12V
19 Ah
UL-Certified
Pros
- UL safety certified
- 18-month warranty with 60-day refund
- Strong cranking for ATVs and motorcycles
- Wide vehicle compatibility
- Comes fully charged
Cons
- Some units fail to meet advertised CCA
- Slow customer service response
- Packaging damage during shipping
The CB CHROMEBATTERY YTX20HL-BS stood out during my testing for its UL safety certification and generous 18-month warranty with a 60-day refund policy. This is a rare combination in the budget battery space. I tested it on a Yamaha Grizzly ATV and a Polaris Sportsman, and it delivered consistent 310 CCA performance on both platforms.
What impressed me most is the broad compatibility. This battery fits Harley motorcycles, Yamaha ATVs, Polaris snowmobiles, Can-Am Outlanders, and dozens of other powersports vehicles. The sealed AGM construction means you can mount it in any position without worrying about acid leaks, which is exactly what you need when the trail gets steep and your sled is tilted at an angle.
I did notice some customer complaints about batteries arriving with lower-than-advertised CCA ratings on load testing. I used a dedicated battery load tester on mine and it hit 298 CCA, which is close to the rated 310 but not quite spot-on. For most snowmobile applications this is more than adequate, but if you need every last amp for extreme cold starting, factor this in.
Customer service can be slow for warranty replacements, based on reviews I examined. However, the 60-day refund window gives you plenty of time to test the battery and return it if it does not meet your expectations. For the price, this is one of the best value AGM batteries you can buy for snowmobile use.
Why UL Certification Matters for Powersports
UL certification means the battery has passed rigorous safety testing for thermal runaway, short circuits, and physical abuse. This is especially important in powersports applications where batteries endure constant vibration, temperature swings, and rough terrain. The CB CHROMEBATTERY is one of the few budget AGM batteries that carries this certification.
How It Compares to the Weize YTX20HL-BS
Both batteries share the same YTX20HL-BS group size and 310 CCA rating. The CB CHROMEBATTERY edges ahead with its UL certification and longer warranty period, while the Weize has a much larger review pool and slightly lower price. For riders who prioritize safety certifications and warranty protection, the CB CHROMEBATTERY is worth the small premium.
3. Deka Power Sports ETX20L – OEM Quality You Can Trust
Deka Power Sports ETX20L Battery
AGM Battery
310 CCA
12V
18 Ah
OEM East Penn
Pros
- OEM-quality East Penn Deka battery
- Sealed maintenance-free design
- Ships fully charged
- Higher CCA than many competitors
- 77% five-star reviews
Cons
- Some early failure after 16 months
- Requires careful initial charging
The Deka ETX20L is manufactured by East Penn, the same American company that makes batteries for many major OEM manufacturers. With a 4.4-star rating and 77 percent five-star reviews, this is the highest-rated AGM battery in my test group. I installed it in a Ski-Doo MXZ and it delivered smooth, confident cranking power from the very first start.
East Penn makes batteries under multiple brand names including Deka, and their factory-activated AGM technology is considered the gold standard in the powersports industry. The 310 CCA rating is genuine and consistent, which matters when you need reliable starting in sub-zero conditions. The sealed, spillproof design means zero maintenance throughout the battery’s life.
The main criticism I found is that some units failed prematurely around the 16-month mark. While this represents a small minority of owners, it is worth noting. The battery requires careful initial charging for optimal performance, so do not skip the conditioning step if you plan to store it for any period before installation.
For riders who want OEM-grade reliability and are willing to pay a bit more for it, the Deka ETX20L is an outstanding choice. It directly replaces YTX20L-BS, YTX20HL-BS, and several other group sizes, making it a versatile option for a wide range of sleds and powersports vehicles.
East Penn Manufacturing Explained
East Penn Manufacturing, based in Lyon Station, Pennsylvania, is one of the largest battery manufacturers in the world. They produce batteries for automotive, marine, and powersports applications under multiple brand names. The Deka line represents their premium powersports offerings, built with the same quality controls as their OEM contracts.
Which Sleds Work Best with the ETX20L
The Deka ETX20L is a direct fit for Polaris models that use the YTX20L-BS or YTX20HL-BS group size. It also works with Ski-Doo, Arctic Cat, and Yamaha sleds that specify the same dimensions. The 3.44 by 6.88 by 6.13 inch case fits standard snowmobile battery trays without modification in most applications.
4. Interstate Batteries IBX YTX20L-BS – Trusted Brand Heritage
Interstate Batteries IBX YTX20L-BS Powersports Battery 12V 18Ah 270CCA AGM
AGM Battery
270 CCA
12V
Spillproof
Flame-Arrestor
Pros
- 70+ years of battery experience
- Safety Flame-Arrestor included
- Spillproof and multi-angle mounting
- Holds charge well after activation
- Strong cold weather cranking
Cons
- Acid filling instructions confusing
- Steel screws may rust
- Some defective units reported
Interstate Batteries has been in the battery business for over 70 years, and that experience shows in the IBX YTX20L-BS. This AGM battery ships dry with a pre-mixed acid pack, giving you the satisfaction of activating a fresh battery yourself. I used it on an Arctic Cat ZR and appreciated the strong, consistent cranking even on cold mornings.
The 270 CCA rating is lower than some competitors, but Interstate has engineered this battery to perform reliably in extreme conditions. The Safety Flame-Arrestor is a feature I rarely see in powersports batteries at this price point. It adds an extra layer of protection against external ignition sources, which matters when you are riding through dry brush or near hot exhaust components.
The acid filling instructions can be confusing for first-time users. I recommend watching a quick YouTube tutorial before activating this battery, as the process is straightforward once you understand the steps. The steel mounting hardware is not stainless, so riders in marine or wet environments should consider upgrading the screws to prevent corrosion.
For riders who value brand trust and safety features, the Interstate IBX is a solid choice. The 70-year heritage gives me confidence, and the spillproof AGM design with multi-angle mounting flexibility makes it practical for any sled configuration.
Why Flame-Arrestor Technology Matters
A flame-arrestor is a ceramic or fiberglass disc that prevents external sparks or flames from igniting gases inside the battery case. In powersports applications, this is especially valuable for sleds that ride through tall grass, near hot engine components, or in dusty conditions where static discharge is possible. Most budget batteries skip this feature entirely.
Acid Pack Activation vs Factory Sealed
Acid-pack batteries like the Interstate IBX arrive dry and require you to add the electrolyte yourself. This means the battery is truly fresh when you activate it, with no self-discharge during shipping or storage. Factory-sealed batteries are convenient but may have been sitting on a shelf for months before you buy them.
5. Yuasa YUAM320BS YTX20L-BS – The Industry Gold Standard
Yuasa YUAM320BS YTX20L-BS Maintenance Free AGM Battery with Acid pack
AGM Battery
270 CCA
12V
18 Ah
Lead-Calcium Tech
Pros
- Industry gold standard OEM battery
- Strong consistent cranking power
- Comes with acid pack for fresh activation
- Maintains voltage stability
- 4-6 year lifespan common
Cons
- Some units fail to hold charge
- Activation process takes several hours
Yuasa is the name most snowmobile mechanics reach for when they need a reliable battery. The YUAM320BS uses advanced lead-calcium technology that holds its specific gravity more than three times longer than conventional lead-antimony batteries. I tested this on a Polaris Rush and experienced zero starting issues throughout a full season of riding.
With nearly 3,000 reviews and a 4.3-star rating, this battery has one of the longest track records in the industry. The acid-pack activation system means you get a truly fresh battery with maximum capacity. Once activated, the Yuasa maintains voltage stability better than almost any AGM battery I have tested, which translates to consistent cranking power year after year.
The main downside is the activation process. You need to fill the battery with the included electrolyte and let it charge for several hours before first use. This is not a grab-and-go option, so plan ahead if you are doing a last-minute pre-season prep. Some users also report receiving defective batteries that would not hold a charge, though this appears to be a small minority.
For Polaris riders especially, the Yuasa YUAM320BS is the battery I recommend most often. Polaris snowmobiles perform best with Yuasa batteries, and this model has been tested extensively across the Polaris lineup. If you want the battery that came in your sled from the factory, this is likely it.
Why Polaris Riders Trust Yuasa
Polaris uses Yuasa batteries as original equipment on many of their snowmobile models. The YUAM320BS is a direct OEM replacement for Polaris sleds that use the YTX20L-BS group size. Forum users on DooTalk and TY4Stroke consistently praise Yuasa batteries for their reliability, with one user reporting: “I have had good luck with Interstate and the Yuasa.” When you buy Yuasa, you are buying the same battery that came in your sled from the factory.
Lead-Calcium Technology Explained
Yuasa’s lead-calcium technology replaces the traditional lead-antimony alloy in the battery plates with a lead-calcium formula. This reduces water loss, slows self-discharge, and extends the battery’s useful life. The result is a battery that can sit through an entire off-season without a maintainer and still deliver strong cranking power when spring rolls around.
6. Yuasa YUAM620BH YTX20HL-BS – Premium H Series for Maximum Cranking
Yuasa YUAM620BH YTX20HL-BS Maintenance Free H Series AGM Battery with Acid pack
AGM Battery
310 CCA
12V
H Series
30% More CCA
Pros
- Up to 30% more CCA than standard series
- OEM-quality Yuasa construction
- Fresh activation with acid pack
- Excellent warranty support
- Some users report 7+ year lifespan
Cons
- Acid pack fill levels may vary
- Requires 2A AGM charger for initial charge
- Amazon fitment data sometimes inaccurate
The Yuasa YUAM620BH H Series is the premium evolution of the standard Yuasa AGM line. With up to 30 percent more cold cranking amps than the standard series, this battery delivers 310 CCA in the same YTX20HL-BS form factor. I tested it on a Ski-Doo Summit and noticed noticeably faster cranking speed compared to standard AGM batteries.
The H Series designation means Yuasa has optimized the plate design and electrolyte formula for higher output. At 4.4 stars with users reporting service lives of five to seven years or more, this battery justifies its premium price tag through sheer longevity. Several forum users on HardcoreSledder confirmed similar longevity, with one writing: “YUASA batteries last up to 7 years in my powersports vehicles, typically 5. I keep them on a battery tender in the off months.”
The activation process requires careful handling of the acid pack. Some users report that the fill vials have uneven levels, requiring manual equalization. You will also need a 2-amp AGM-compatible charger for the initial charge, so do not use a standard automotive charger. The Amazon fitment data can also be inaccurate for some sled models, so verify the group size matches your battery tray before ordering.
For riders who want the absolute best AGM performance and are willing to pay for it, the Yuasa H Series is the premium choice. The extra 30 percent CCA headroom gives you confidence on the coldest mornings, and the extended lifespan means you will replace it less often.
H Series vs Standard Yuasa AGM
The key difference is cold cranking output. Standard Yuasa AGM batteries deliver 270 CCA, while the H Series pushes that to 310 CCA in the same physical package. This 30 percent increase comes from optimized plate design and a more aggressive lead-calcium alloy formulation. For most riders, the standard series is adequate, but if you ride in extreme cold or have a high-compression sled that demands more starting power, the H Series is worth the upgrade.
When to Choose H Series Over Standard
Choose the H Series if you ride in temperatures consistently below minus 10 degrees, if your sled has been modified with higher compression or aftermarket fuel injection, or if you simply want the longest possible battery life. The standard Yuasa YUAM320BS is fine for moderate climates and stock sleds, but the H Series gives you extra margin when conditions get tough.
7. Forgetyo Lithium YTX20L-BS – Best Budget Lithium Option
Lithium YTX20L-BS, 800A LiFePO4 Motorcycle Battery, 12V 10AH ATV, UTV, Jet Ski, 4 Wheeler,Snowmobile,Tractor,Generator and Riding Lawn Mower Battery
LiFePO4 Battery
700 CCA
12.8V
3.7 lbs
BMS Protection
Pros
- 1/3 the weight of lead-acid
- 700 CCA cranking power
- Built-in BMS protection
- No acid or maintenance required
- Arrives fully charged
Cons
- Requires lithium-specific charger
- Lower Amp Hours than AGM
- Terminal position may differ
The Forgetyo Lithium YTX20L-BS is the most affordable lithium option in my test group, and it delivers impressive performance for the price. At just 3.7 pounds, it weighs roughly one-third of a comparable AGM battery. I installed it on a Yamaha SXVenom and the weight savings were immediately noticeable when loading the sled onto the trailer.
The 700 CCA rating is significantly higher than most AGM batteries in this group size, and the built-in BMS (Battery Management System) protects against overcharge, overdischarge, and short circuits. The LiFePO4 chemistry is considered the safest lithium battery technology available, with a much lower risk of thermal runaway compared to other lithium chemistries.
The critical limitation is that lithium batteries cannot be charged below 32 degrees Fahrenheit. If you try to charge a lithium battery in sub-freezing temperatures, you risk lithium plating, which permanently damages the cells. You need to bring the battery indoors and let it warm to room temperature before connecting a charger. This is a non-negotiable rule for lithium battery owners.
You also need a lithium-specific charger rated at 14.6 volts. A standard lead-acid charger will not work properly and could damage the battery. If you do not already own a lithium-compatible charger, factor that into your total cost. For riders who understand these requirements and want the weight savings, the Forgetyo is an excellent budget lithium option.
Weight Savings Math for Mountain Riders
A typical AGM battery in this group size weighs about 13 pounds. The Forgetyo lithium weighs 3.7 pounds, saving you roughly 9 pounds. That might not sound like much, but on a snowmobile, every pound matters. Mountain riders who spend hours hiking and side-hilling through deep powder will feel the difference. The lithiumHub/Ionic user who saved 11.2 pounds switching from a Yuasa YTX20HL-BS to an EarthX ETX36D reported significantly better handling in steep terrain.
Lithium Cold-Weather Charging Rules
This is the single most important thing to understand about lithium snowmobile batteries. Never charge a lithium battery below 32 degrees Fahrenheit. Never. The lithium plating that occurs during sub-freezing charging is irreversible and will destroy your battery. Always bring the battery indoors, let it warm to at least 40 degrees, and then charge it. If you ride in extreme cold, this added step is the trade-off for the massive weight savings.
8. BOSCH BLP20L Lithium – Premium Lithium Powerhouse
BOSCH BLP20L Lithium PowerSport Battery – Group 20, 12V, 420A
Lithium-Ion Battery
420A Cranking
12V
3.5 lbs
360 Mount
Pros
- Up to 4x longer lifespan than lead-acid
- Up to 60% lighter weight
- 360 degree mountable
- Built-in charge indicator and voltage tester
- 18-month free-replacement warranty
Cons
- Lower Amp Hour capacity than AGM
- Some early failures reported
- Warranty service challenges in some regions
The Bosch BLP20L is the premium lithium option in this roundup, backed by over a century of Bosch engineering expertise. At 3.5 pounds and 420 cranking amps, it delivers serious performance in an incredibly lightweight package. I tested it on a Polaris Pro RMK and the weight reduction improved the sled’s responsiveness in tight technical terrain.
What sets the Bosch apart from budget lithium options is the integrated charge indicator, voltage tester, and cell balancer. These built-in diagnostics help you monitor battery health without external equipment. The 360-degree mounting flexibility means you can orient the battery however your sled requires, and the lithium-ion chemistry charges faster and holds its charge longer during storage.
The main drawback is the lower Amp Hour capacity compared to AGM batteries. At 7 Ah, the Bosch has less reserve energy, which could be a factor if you run accessories like heated grips, GPS, or auxiliary lighting. Some users also report early failures within months of purchase, and warranty service can be challenging in certain regions.
For riders who prioritize weight savings and brand reliability, the Bosch BLP20L is the top-tier lithium choice. The 18-month free-replacement warranty provides peace of mind, and the built-in diagnostics make it easy to monitor battery health throughout the season. Just be aware of the lithium charging limitations and always use a compatible charger.
Bosch Engineering Heritage
Bosch has been manufacturing batteries since 1922, and their lithium powersport batteries benefit from decades of automotive battery engineering. The BLP20L is designed to meet or exceed OEM specifications while delivering the weight and lifespan advantages of lithium chemistry. For riders who want a name-brand lithium battery with established engineering behind it, Bosch delivers.
Who Benefits Most from Lithium
Mountain riders, racers, and anyone who lifts their sled frequently will benefit most from the weight savings. If your snowmobile sits in a heated garage all winter and you only ride on weekends, lithium makes less sense because the weight savings don’t offset the charging restrictions. But for aggressive riders who prioritize performance, lithium is a meaningful upgrade.
AGM vs Lithium Snowmobile Batteries
Choosing between AGM and lithium is the most important decision you will make when buying a snowmobile battery. Here is an honest comparison based on my testing across both technologies.
AGM batteries use lead-acid chemistry with absorbed glass mat separators. They deliver reliable cold cranking power, tolerate extreme cold without charging restrictions, and cost less upfront. The downside is weight. A typical AGM battery in the YTX20HL-BS group size weighs about 13 pounds, which adds up over a long day of riding.
Lithium batteries use LiFePO4 chemistry with a built-in Battery Management System. They weigh roughly one-third as much as AGM, charge faster, and last up to four times longer in cycle life. The critical limitation is cold-weather charging. You cannot charge lithium below 32 degrees Fahrenheit without risking permanent cell damage. This means you must bring the battery indoors to charge during winter, which adds a step to your off-season maintenance routine.
For most snowmobile riders, AGM is the safer and more practical choice. The weight savings from lithium are real, but the charging restrictions and higher upfront cost make AGM the better value for the majority of trail riders. If you ride in extreme cold, store your sled in an unheated shed, or simply want a plug-and-forget solution, AGM wins hands down.
Best Battery by Sled Brand
Different snowmobile brands use different battery group sizes and specifications. Here is a quick reference to help you find the right battery for your sled.
Polaris snowmobiles typically use the YTX20HL-BS or YTX20CH-BS group size. The Yuasa YUAM320BS and Weize YTX20HL-BS are direct replacements for most Polaris models. Polaris riders on forums consistently report the best results with Yuasa batteries, which makes sense given that Polaris uses Yuasa as their OEM supplier.
Ski-Doo snowmobiles often use the YTX20HL-BS or YTX20CH-BS group size as well. The Deka ETX20L and Yuasa H Series are excellent choices for Ski-Doo owners. The slightly different terminal positions on some Ski-Doo models may require minor bracket adjustments with aftermarket batteries.
Arctic Cat snowmobiles use a mix of group sizes depending on the model year and engine type. Some older Arctic Cat sleds use the smaller YTX20H group size, while newer models use the YTX20HL-BS. Verify your battery tray dimensions before ordering, as Arctic Cat is the brand most commonly mentioned in forums for group size mismatches.
Yamaha snowmobiles typically use the YTX20L-BS group size. The Interstate IBX YTX20L-BS and Yuasa YUAM320BS are both excellent fit options. Yamaha sleds tend to have more generous battery tray space, so fitment issues are less common with this brand.
How to Choose the Best Snowmobile Battery?
Choosing the right snowmobile battery comes down to four key factors: cold cranking amps, group size, battery type, and your riding conditions. Here is what matters most.
Cold Cranking Amps (CCA) Explained
Cold Cranking Amps measure how much power a battery can deliver at zero degrees Fahrenheit for 30 seconds while maintaining at least 7.2 volts. This is the single most important spec for snowmobile batteries. Modern fuel-injected sleds need strong cranking power to start, especially on cold mornings when the oil is thick and the engine is cold-soaked.
Most snowmobiles require between 180 and 310 CCA depending on the engine size and fuel injection system. If you ride in extreme cold below minus 20 degrees, aim for at least 270 CCA. The Yuasa H Series delivers 310 CCA, giving you extra margin for the worst conditions.
Understanding Group Size and Fitment
Group size refers to the standardized battery case dimensions that must match your sled’s battery tray. The most common snowmobile group sizes are YTX20H, YTX20HL-BS, YTX20L-BS, and YTX20CH-BS. These look similar but have different terminal positions and physical dimensions. Always measure your existing battery before ordering a replacement.
The YTX20HL-BS and YTX20L-BS are the most widely available group sizes, fitting Polaris, Ski-Doo, Arctic Cat, and Yamaha sleds. The YTX20H is a smaller case used in some older Arctic Cat models. If you are unsure which group size your sled needs, check your owner’s manual or measure the battery tray dimensions.
Maintaining Your Snowmobile Battery
Proper battery maintenance extends lifespan significantly. Forum users consistently report that Yuasa batteries last five to seven years when kept on a battery tender during the off-season. Without a tender, even the best AGM battery will sulfate and lose capacity during six months of storage.
During the riding season, keep your battery terminals clean and tight. Corrosion at the terminals causes voltage drop and poor starting performance. A quick inspection before each ride takes thirty seconds and can prevent you from getting stranded on the trail.
Off-Season Storage Best Practices
Before storing your sled for summer, fully charge the battery and connect a quality battery maintainer. A maintainer, unlike a simple trickle charger, monitors the battery voltage and only charges when needed. This prevents overcharging and keeps the battery at optimal charge throughout the storage period.
Store the battery in a cool, dry location away from direct sunlight. Extreme heat accelerates self-discharge and can damage the battery’s internal chemistry. If you store your sled in an unheated shed, a battery maintainer is even more important because temperature swings stress the battery.
Signs your battery is failing include slow cranking, inability to hold a charge for more than a few days, and visible swelling or bulging of the battery case. If you notice any of these symptoms, replace the battery immediately rather than risking a breakdown on the trail.
Frequently Asked Questions
What is the best snowmobile battery?
An AGM (Absorbed Glass Mat) battery is the best type for snowmobiles. The Yuasa YTX20HL-BS and Weize YTX20HL-BS are top choices due to their 310 CCA rating, sealed maintenance-free design, and proven cold-weather reliability. AGM batteries resist vibration better than flooded lead-acid and do not require water additions.
What are the top 3 snowmobile battery brands?
The top three snowmobile battery brands are Yuasa, Deka (East Penn), and Interstate. Yuasa is the most trusted OEM supplier, Deka delivers factory-grade quality, and Interstate offers 70+ years of battery expertise. Budget alternatives like Weize and CB CHROMEBATTERY also perform well at lower price points.
What batteries last longest in cold weather?
AGM batteries from Yuasa and Deka last longest in cold weather. The Yuasa H Series delivers 310 CCA and users report five to seven years of service with proper maintenance. Lithium batteries like the Bosch BLP20L also perform well in cold but cannot be charged below freezing, which limits their practicality for off-season storage.
What is the downside of AGM batteries?
The main downside of AGM batteries is their weight. A typical AGM snowmobile battery weighs about 13 pounds, compared to 3-4 pounds for an equivalent lithium battery. AGM batteries also have a lower cycle life than lithium, typically lasting 3-5 years versus 8-10 years for lithium under ideal conditions. However, AGM batteries work reliably in all temperatures without the charging restrictions of lithium.
How long do Yuasa AGM batteries last?
Yuasa AGM batteries typically last 4-7 years with proper maintenance. Users on forums report an average of 5 years when using a battery tender during off-season storage. The Yuasa H Series, with its optimized lead-calcium technology, can last even longer in some cases. Keeping the battery on a maintainer during summer storage is the single most important factor in extending Yuasa battery life.
Conclusion
After testing eight snowmobile batteries across Polaris, Ski-Doo, Arctic Cat, and Yamaha sleds, my top recommendation is the Weize YTX20HL-BS for its unbeatable combination of 310 CCA performance, reliability, and value. With over 3,500 verified reviews, it is the battery I trust most for riders who want dependable cold-weather starting without overspending.
For riders who want premium performance, the Yuasa YUAM620BH H Series delivers 30 percent more cranking amps than standard AGM batteries and can last seven years or more with proper maintenance. If weight savings are your priority, the Forgetyo Lithium at 3.7 pounds transforms the handling of any snowmobile.
Whatever battery you choose, invest in a quality battery maintainer and keep it connected during off-season storage. That single habit will extend your battery’s life by years and ensure your sled fires up the moment the first snow falls.