Before testing the AJC Battery for Harley-Davidson Electra Glide Ultra Classic FLHTCU 1584CC, I never realized how sluggish my bike felt on cold mornings. This battery’s fully sealed, factory-activated AGM design meant I started every time with instant power, without fuss or water filling. It’s a game-changer for anyone tired of weak responses or constant maintenance.
After comparing it with similar options, I found the AJC Pro Battery Harley-Davidson Electra Glide Ultra Classic stood out. Its increased capacity (CCA 430) delivers more cranking power, perfect for those demanding rides. Plus, it’s built to last, with advanced technology that keeps performance steady even after periods of inactivity. If you want reliability and top-tier power, this is the one I recommend—tested thoroughly and clearly the best value for your Ultra Glide.
Top Recommendation: AJC Pro Battery Harley-Davidson Electra Glide Ultra Classic
Why We Recommend It: This battery offers a higher cold cranking amps (CCA of 430) compared to others, ensuring quick starts on cold mornings. Its long-lasting capacity and advanced power technology provide reliable performance even after periods of inactivity, surpassing the standard AGM models. It replaces key models like GYZ32HL and MBTX30UHD while delivering improved durability and power, making it the best overall choice for your 2011 Ultra Glide.
Best replacement battery for harley davidson 2011 ultra glide: Our Top 3 Picks
- AJC Battery Harley-Davidson Electra Glide Ultra Classic – Best for Ultra Glide Models
- AJC Pro Battery Harley-Davidson Electra Glide Ultra Classic – Best Premium Replacement Battery
- AJC Battery Harley-Davidson Road Glide Ultra FLTRU 1690CC – Best for Road Glide Ultra
AJC Battery for Harley-Davidson Electra Glide FLHTCU 1584CC
- ✓ Fully sealed and maintenance free
- ✓ High cold cranking amps
- ✓ Easy installation
- ✕ Slightly bulky size
- ✕ Replacement cost can be higher
| Battery Chemistry | Maintenance-free AGM (Absorbent Glass Mat) |
| Cold Cranking Amps (CCA) | 385 A |
| Voltage | 12 Volts |
| Capacity | Replaces YIX30L, YTX30L, and similar models |
| Terminal Type | B (Standard automotive terminal) |
| Sealed and Fully Charged | Yes |
Compared to other replacement batteries I’ve handled for Harley-Davidson Ultra Glides, this AJC model immediately stands out with its factory-activated, fully sealed design. You don’t have to mess around with adding acid or water, which is a huge time-saver and keeps things simple.
The moment I took it out of the box, I noticed it felt solid, with a compact, heavy-duty build that screams durability.
The AGM technology is a real plus, offering maintenance-free operation that’s perfect for anyone tired of fussing with their battery. It arrives charged and ready to go, so you can just pop it into your bike and hit the road.
The terminals are well-marked with clear polarity, making installation straightforward even if you’re not a mechanic.
What really impressed me was the high cold cranking amps (385 CCA), which means reliable starts even in cold weather. Plus, it’s compatible with a wide range of Harley-Davidson models, so you’re covered if you own a 2011 Ultra Glide or similar.
The secure seal and robust terminal design gave me confidence that it’d handle vibrations and bumps without issue.
On the downside, the size is a bit bulkier compared to some compact batteries. If space is tight under your seat, you may need to double-check fitment.
Also, while it’s maintenance-free, replacing it down the line might be pricier than some generic options.
All in all, this battery feels like a solid investment for keeping your Harley running smoothly, especially if you want reliability and ease of use in one package.
AJC Pro Battery Harley-Davidson Electra Glide Ultra Classic
- ✓ Long-lasting power
- ✓ Reliable in cold weather
- ✓ Easy to install
- ✕ Slightly pricier
- ✕ Heavier than stock
| Battery Type | Absorbent Glass Mat (AGM) Motorcycle Battery |
| Capacity | Approximate 30-35 Ah (inferred from size and category) |
| Cold Cranking Amps (CCA) | 430 CCA |
| Voltage | 12 Volts |
| Terminal Type | E terminal (positive and negative polarity specified) |
| Replaces Models | GYZ32HL, YB30L-B, MBTX30UHD, MBTX30U+ |
Imagine grabbing your Harley after a long winter and realizing your battery is dead as a doornail. That’s what I faced with my Ultra Classic, and I was surprised how quickly the AJC Pro Battery brought it back to life.
The moment I installed it, I noticed how solid and compact it felt in my hands, a real upgrade from the stock one.
The first thing that caught my attention was the impressive power it delivers. Even after sitting for months, the engine cranked over smoothly and instantly.
The increased capacity meant I didn’t have to worry about weak starts, especially on chilly mornings. It’s clear this battery is built for serious performance, with a CCA of 430, giving me confidence in all conditions.
What I really appreciated was how reliable it felt under everyday use. No hesitation, no slow starts—just a consistent, strong spark every time.
Plus, it fits perfectly in my bike, with the right polarity and terminals. The advanced tech inside seems to keep the power going long after periods of inactivity, which is a huge plus for me.
While it’s a bit more expensive than some generic options, the reliability and performance make it worth the investment. If you’re tired of dealing with weak batteries or unreliable starts, this one might just become your new favorite.
Overall, it’s a solid upgrade for your 2011 Ultra Classic that you can count on day after day.
AJC Battery Harley-Davidson Road Glide Ultra FLTRU 1690CC
- ✓ Fully sealed and charged
- ✓ Maintenance free AGM tech
- ✓ Reliable cold start power
- ✕ Slightly heavier than OEM
- ✕ Higher price point
| Battery Chemistry | Maintenance-free AGM (Absorbent Glass Mat) technology |
| Cold Cranking Amps (CCA) | 385A |
| Voltage | 12V |
| Capacity | Replaces YIX30L series batteries, typically around 30Ah |
| Terminal Type | B terminal (specific polarity: -/+) |
| Replaces Battery Models | YIX30L-BS, YIX30L, YTX30L-BS, YTX30L, and others listed |
You know that moment when your Harley’s engine just refuses to turn over, even though you’ve been meticulous about maintenance? That frustration of dealing with a sluggish battery or one that’s just plain dead can really throw a wrench in your day.
With the AJC Battery for the Harley-Davidson Road Glide Ultra FLTRU, I found that hassle instantly disappeared. This battery arrives fully sealed and charged, so no messing around with adding acid or water—it’s ready to go right out of the box.
The AGM technology is maintenance free, which means you’ll never have to worry about topping off fluid levels or corrosion buildup.
The build quality feels solid and durable, with a sturdy casing that fits perfectly into the battery compartment. During installation, I noticed the terminals are clearly marked and well-positioned, making connection straightforward even if you’re doing this in your garage after a long ride.
What really stood out is the cold cranking amps (CCA) of 385—plenty of juice to start up in cold weather or after long periods of inactivity. Plus, it replaced a wide range of other battery models, so compatibility is a big plus if you’re swapping from an older or different battery type.
Overall, this battery gave me reliable starts every time, even on chilly mornings. It’s a solid upgrade that takes away the dread of a dead battery and keeps your bike running smoothly.
Whether you’re on a long ride or just commuting, it’s a dependable choice that won’t let you down.
What Makes a Replacement Battery the Best Choice for Harley Davidson 2011 Ultra Glide?
The best replacement battery for a Harley Davidson 2011 Ultra Glide is an Absorbent Glass Mat (AGM) battery, specifically designed for high-performance motorcycles.
- Battery Type
- Cold Cranking Amps (CCA)
- Reserve Capacity (RC)
- Durability and Vibration Resistance
- Maintenance-Free Design
- Brand Reputation
- Warranty Policy
Choosing the right replacement battery involves considering various attributes that impact performance and reliability.
-
Battery Type:
The term ‘battery type’ refers to the technology used in the battery’s construction. Absorbent Glass Mat (AGM) batteries provide superior performance compared to traditional lead-acid batteries. AGM technology immobilizes the electrolyte, preventing spillage and making the battery more resistant to vibrations and shocks. This makes AGM batteries suitable for Harley Davidson motorcycles which experience high vibrations during rides. -
Cold Cranking Amps (CCA):
‘Cold Cranking Amps’ (CCA) is a measure of a battery’s ability to start an engine in cold temperatures. A higher CCA value indicates better starting power. For the Harley Davidson 2011 Ultra Glide, a battery with a CCA rating of at least 300 is advisable. Batteries with sufficient CCA ensure that your motorcycle starts easily, especially in colder conditions. -
Reserve Capacity (RC):
‘Reserve capacity’ (RC) indicates how long a battery can run on its own before being recharged. A higher RC is beneficial for riders who may experience electrical failures. An ideal reserve capacity for Harley Davidson batteries ranges from 30 to 50 minutes, ensuring reliable operation even when the charging system is compromised. -
Durability and Vibration Resistance:
‘Durability and vibration resistance’ indicate how well a battery can withstand the harsh conditions typical of motorcycle operation. AGM batteries excel in this area due to their solid construction that absorbs vibrations, extending the battery’s lifespan. Riders often face rough terrains; hence, a battery built for durability is essential for performance. -
Maintenance-Free Design:
A ‘maintenance-free design’ means the battery does not require regular upkeep like water topping. AGM batteries are sealed and designed to prevent acid leaks, simplifying battery care for riders. This is particularly useful for motorcycle owners who prefer convenience without sacrificing performance. -
Brand Reputation:
‘Brand reputation’ relates to the reliability of the manufacturer. Leading brands like Yuasa and Odyssey are known for producing high-quality batteries compatible with Harley Davidson motorcycles. Opting for a well-regarded brand minimizes the risk of battery failure and ensures better customer support. -
Warranty Policy:
A ‘warranty policy’ establishes the manufacturer’s commitment to quality and service. A robust warranty provides confidence to the buyer and can offer peace of mind regarding the battery’s longevity. Batteries with a warranty of at least one to two years are preferred, as they usually indicate higher quality standards.
By understanding these aspects, riders can make informed decisions and select the best replacement battery for their Harley Davidson 2011 Ultra Glide.
How Important is Cold Cranking Amperage for My Harley Davidson 2011 Ultra Glide?
Cold cranking amperage (CCA) is very important for your 2011 Harley Davidson Ultra Glide. CCA measures the battery’s ability to start the engine in cold conditions. A higher CCA rating means the battery can provide more power to start the engine when temperatures drop. For a Harley Davidson, sufficient CCA is crucial due to the engine’s size and power requirements.
When temperatures fall, a battery may lose its ability to start the bike effectively. Insufficient CCA can lead to difficulty in starting the engine or even a complete failure to start. Therefore, choosing a battery with an appropriate CCA ensures reliable starting performance.
Most motorcycle manufacturers recommend a minimum CCA for their models. For the 2011 Ultra Glide, you should look for a battery that meets or exceeds this recommendation. This choice guarantees optimal performance and longevity in varying weather conditions.
What are the Signs That Indicate It’s Time to Replace My Harley Davidson 2011 Ultra Glide Battery?
It’s time to replace your Harley Davidson 2011 Ultra Glide battery when you notice several key signs indicating battery failure.
- Difficulty starting the engine
- Frequent dimming of headlights
- Corrosion on battery terminals
- Battery age (typically over four years)
- Swelling or leakage from the battery case
The signs of battery failure can vary based on usage and maintenance. Understanding each indicator helps ensure reliable performance on the road.
-
Difficulty Starting the Engine:
Difficulty starting the engine is a clear sign that your battery may be losing its charge. A battery that struggles to start the motorcycle often indicates diminishing power capacity. According to the Motorcycle Industry Council, batteries typically last around three to five years, depending on their usage and care. If starting your Harley Davidson requires multiple attempts, consider replacing the battery. -
Frequent Dimming of Headlights:
Frequent dimming of the headlights may signal that the battery is unable to provide adequate power. This can be particularly noticeable at low RPMs or when other electrical components are in use. The battery provides essential voltage for lighting and other electronics. If you notice this symptom regularly, it may mean your battery is failing. -
Corrosion on Battery Terminals:
Corrosion on battery terminals, often seen as a white, crusty substance, can indicate a failing battery. This corrosion can impede electrical connections, leading to inefficient battery performance. Regular maintenance, including cleaning the terminals, can prevent this. If corrosion persists despite cleaning, you may need to replace the battery. -
Battery Age:
The age of the battery is an essential factor in determining its reliability. Most batteries lose their effectiveness after four years. Harley Davidson recommends checking the battery’s age regularly. If your battery is nearing or has surpassed this limit, it is advisable to consider a replacement for optimal performance. -
Swelling or Leakage from the Battery Case:
Swelling or leakage from the battery case is a critical warning sign that should not be ignored. A battery that swells might indicate internal damage or overheating. Leakage of battery acid can lead to corrosion and damage to surrounding components. If you notice either of these issues, it is imperative to replace the battery immediately for safety and performance reasons.
How Can I Ensure the Best Performance from My Replacement Battery for Harley Davidson 2011 Ultra Glide?
To ensure the best performance from your replacement battery for the Harley Davidson 2011 Ultra Glide, you should choose the right battery type, maintain proper charging practices, and store it correctly during periods of inactivity.
Choosing the right battery type:
– The 2011 Harley Davidson Ultra Glide typically requires a sealed lead-acid (SLA) battery or an absorbed glass mat (AGM) battery.
– Select a battery with the correct group size, which is usually LFX36L3-BS12 for this model. Match the specifications to ensure compatibility with the electrical system.
– Check for a high cold cranking amp (CCA) rating. A CCA rating of at least 200 is advisable for optimal performance, especially in colder climates.
Maintaining proper charging practices:
– Regularly check the battery’s charge level using a digital voltmeter. Ideally, it should read 12.6 volts or more when fully charged.
– Use a smart charger designed for motorcycle batteries. This type of charger prevents overcharging, which can cause battery damage. Brands like Battery Tender are popular choices.
– Avoid deep discharging. Fully discharging an SLA battery can significantly reduce its lifespan. Aim to recharge after each use or when the voltage drops below 12.4 volts.
Storing the battery correctly during periods of inactivity:
– If you plan to store your motorcycle for an extended period, remove the battery and store it in a cool, dry place. Extreme temperatures can affect battery performance and lifespan.
– Maintain a full charge on the battery during storage. Consider using a trickle charger to keep it topped off without overcharging.
– Inspect the battery regularly for any signs of corrosion or leakage. Clean the terminals with a mixture of baking soda and water if corrosion is present.
By following these guidelines, you can enhance the performance and longevity of your replacement battery for the Harley Davidson 2011 Ultra Glide.
What Should I Consider When Installing a Replacement Battery in Harley Davidson 2011 Ultra Glide?
When installing a replacement battery in a Harley Davidson 2011 Ultra Glide, consider the battery type, specifications, and proper installation techniques.
- Battery Type
- Specifications (size, capacity)
- Terminal Configuration
- Installation Process
- Safety Precautions
Understanding these points is crucial for successful battery replacement.
-
Battery Type: The battery type refers to the kind of battery compatible with the Harley Davidson 2011 Ultra Glide. Most motorcycle batteries fall into categories such as lead-acid, AGM (Absorbent Glass Mat), and lithium-ion. Lead-acid batteries are traditional but may require more frequent maintenance. AGM batteries provide better performance and are maintenance-free, while lithium-ion batteries are lightweight and have a longer lifespan.
-
Specifications (size, capacity): Specifications are essential for ensuring the battery fits and operates effectively in your motorcycle. You need to check the group size, typically 31 for this model, and the cold cranking amps (CCA), which should meet or exceed the original battery’s capacity for starting power in cold weather conditions.
-
Terminal Configuration: Terminal configuration denotes the layout and orientation of battery terminals. Proper terminal configuration prevents electrical short circuits and ensures a secure connection. Watch for positive and negative terminal markings on both the battery and the bike. Installing the battery with reversed terminals can damage the electrical system.
-
Installation Process: The installation process involves careful steps. First, remove the negative terminal, then the positive terminal. After that, take out the old battery and place the new one in position. Secure it properly, then connect the positive terminal followed by the negative. Ensure all connections are tight and check for any signs of corrosion.
-
Safety Precautions: Safety precautions are vital during battery installation. Wear protective eyewear and gloves to prevent acid exposure. Work in a well-ventilated area, as batteries can emit harmful gases. Never smoke or create sparks near the battery. Follow all manufacturer guidelines to prevent accidents.
What Maintenance Practices Extend the Life of My Harley Davidson 2011 Ultra Glide Battery?
To extend the life of your Harley Davidson 2011 Ultra Glide battery, you should follow specific maintenance practices.
- Regular charging
- Clean battery terminals
- Check electrolyte levels
- Monitor battery voltage
- Inspect for corrosion
- Ensure proper securement
These maintenance practices contribute to a healthier battery and improve its longevity.
-
Regular Charging:
Regular charging refers to keeping the battery properly charged to prevent discharge. Avoid letting your battery sit unused for extended periods. A discharged battery can become sulfated, leading to irreversible damage. Experts recommend using a smart battery charger that automatically maintains charge levels without overcharging. -
Clean Battery Terminals:
Clean battery terminals involve removing dirt and grime from the battery contacts. Corroded terminals can lead to poor electrical connections. Use a mixture of baking soda and water to clean the terminals and apply a corrosion inhibitor after cleaning. Regular cleaning can significantly enhance performance and lifespan. -
Check Electrolyte Levels:
Checking electrolyte levels is crucial for maintenance. The electrolyte solution inside the battery can evaporate, particularly in hot weather. If levels are low, topping up with distilled water can prevent voltage issues and prolong battery life. Maintain the appropriate levels according to the manufacturer’s directions. -
Monitor Battery Voltage:
Monitoring battery voltage involves using a multimeter to check the battery’s voltage regularly. A healthy fully charged battery should read around 12.6 volts. If the voltage falls below 12.4 volts, it is time to charge the battery. This proactive measure can prevent unexpected failures. -
Inspect for Corrosion:
Inspecting for corrosion includes looking for white, ashy deposits around the battery terminals. Corrosion can lead to increased resistance and poor performance. Treat any signs of corrosion promptly; using a wire brush can help clean the area. Regular inspections contribute to optimal operation. -
Ensure Proper Securement:
Ensuring proper securement means checking that the battery is installed correctly and doesn’t move during riding. A loose battery can lead to physical damage and electrical connections breaking. Make sure the battery is secured tightly with the appropriate fasteners.
Implementing these practices will help maintain your battery’s performance and prolong its life.
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