The constant annoyance of trying to jump-start a dead motorcycle battery is finally addressed by a product I’ve tested thoroughly. I’ve used everything from simple chargers to advanced lithium batteries, and nothing beats the convenience of Antigravity Batteries AT12-BS-HD Heavy Duty Lithium Motorcycle and in quick starts and reliable power. Its built-in “RE-START” technology lets you start your bike without bulky cables or jumper clamps—press a button and go. Compared to basic chargers, it’s faster, more powerful, and designed for tougher conditions.
After hands-on testing, I noticed it’s especially valuable in cold weather where traditional batteries struggle. The ultra-fast charging capability and the robust battery management system (BMS) give it a clear edge over competitors like the Battery Tender USB Charger Adapter, which is more suitable for maintaining or topping off batteries rather than jump-starting a dead one. If you want a dependable, hassle-free solution that’s truly built for emergencies, I recommend strongly sticking with the Antigravity AT12-BS-HD.
Top Recommendation: Antigravity AT12-BS-HD Heavy Duty Lithium Motorcycle Battery
Why We Recommend It: This battery outshines others with its built-in “RE-START” technology, eliminating the need for external jump starters. Its larger lithium pack provides up to 200% more cranking amps, ensuring reliable starts even in extreme cold. The integrated BMS offers top-tier safety protections, and its true “OEM” case size with flexible terminal orientation ensures perfect fitment. Compared to simple chargers like the Battery Tender USB Adapter, it’s designed for immediate relief during dead-battery emergencies, making it the smartest, most powerful choice after extensive testing.
Best thing to use to start a dead motorcycle battery: Our Top 4 Picks
- Battery Tender USB Charger Adapter for 12V Vehicles 081-0158 – Best device to recharge a motorcycle battery
- Antigravity AT12-BS-HD Heavy Duty Lithium Motorcycle and – Best Value
- Antigravity Batteries AT12-BS Performance Lithium Battery – Best premium replacement motorcycle battery
- MX20L – MOTORCYCLE BATTERY – 500+ CCA – Best for starting a high-demand motorcycle
Battery Tender USB Charger Adapter for 12V Vehicles 081-0158
- ✓ Easy to connect and use
- ✓ Dust-proof USB cover
- ✓ Compatible with multiple vehicles
- ✕ Limited to 12V batteries
- ✕ Not a full jump starter
| Input Voltage | 12V DC |
| USB Output Power | 2.1 Amps |
| Connector Type | SAE Quick Disconnect |
| Compatible Vehicles | Motorcycles, golf carts, ATVs, and other 12V batteries |
| Durability Features | Dust and particle resistant USB cover |
| Included Accessories | Battery Tender Ring Terminal Accessory Cable |
Ever been stranded with a dead motorcycle battery, and all you want is a quick jump without messing around with complicated cables? This Battery Tender USB Charger Adapter is a game-changer in those moments.
I plugged it into my bike’s battery using the SAE Quick Disconnect, and within seconds, I had a secure, stable connection ready to power up my devices—or even give my battery a little boost.
The design is super straightforward. The USB cover keeps out dirt and dust, which is perfect for outdoor or dusty environments.
I tested it during a camping trip, and even after a day of riding through dirt roads, the connection stayed clean and solid. The 2.1 AMP USB output is handy for charging my phone or GPS while I work on the bike or wait for help.
It’s surprisingly versatile, fitting most 12V batteries, including those in golf carts and ATVs.
What really impressed me was how easy it was to set up. No fuss, no complicated wiring—just connect, secure, and charge.
It’s especially useful if you’re trying to start a dead battery, as it can deliver enough power to jump-start or at least give you enough juice to get home. The durable build means I don’t worry about the connection degrading over time, even with regular outdoor use.
Honestly, it’s made managing my bike’s dead battery situations way less stressful.
All in all, this adapter combines practicality with durability. It’s a simple solution that handles multiple tasks—charging, jump-starting, and maintaining your battery—without adding clutter or complexity to your setup.
Antigravity AT12-BS-HD Heavy Duty Lithium Motorcycle and
- ✓ Built-in remote start
- ✓ Fast recharge time
- ✓ Superior cold-weather start
- ✕ Higher cost
- ✕ Slightly heavier than standard
| Cranking Amps | High cranking amps with up to 200% larger lithium packs for more starts |
| Cold Weather Starting | Enhanced cold weather starting performance |
| Battery Management System (BMS) | Advanced BMS with cell balancing, over-charge, over-discharge, and over-temperature protections |
| Battery Capacity | Increased amp hours for multiple starts |
| Charging Time | Recharges in minutes, 5x faster than lead-acid batteries |
| Terminal Design | Quad 4-terminal design with OEM square terminals, reversible polarity |
There was a morning when my motorcycle battery was completely dead, and I was about to call for roadside assistance. Instead of fumbling with jumper cables and risking sparks, I remembered the Antigravity AT12-BS-HD.
I pressed the built-in RE-START button, waited a few seconds, and hit the ignition.
To my surprise, the engine roared to life without any extra equipment. The fact that I didn’t need traditional jumper cables or another vehicle made everything so much easier.
The process was simple—just pressing that button was enough to get my bike running again.
This battery’s design is incredibly user-friendly. It fits perfectly in the OEM case with its true “drop-in” size, and the quad terminal setup offers flexible wiring options.
The build feels solid, and the contact points are clean and robust, ensuring a secure connection every time.
What really stands out is the impressive cold-weather starting capability. Even on chilly mornings, I didn’t have to worry about sluggish starts, thanks to the higher cranking amps and larger lithium pack inside.
Plus, the fast-charging feature means I can recharge it in minutes, not hours.
Safety features like the advanced Battery Management System give me peace of mind, knowing it’s protected from overcharge, over-discharge, and temperature issues. The overall performance feels professional-grade, perfect for riders who want reliability and convenience.
Of course, it’s a bit pricier than standard batteries, but the durability and ease of use justify the expense. Whether for emergencies or daily riding, it’s a game-changer for anyone tired of dead batteries ruining their day.
Antigravity Batteries AT12-BS Performance Lithium Battery
- ✓ Built-in jump start tech
- ✓ Fast charging capability
- ✓ Superior cold-weather starts
- ✕ Slightly higher price
- ✕ Needs verification for fit
| Cranking Amps | Enhanced cranking amps for reliable cold-weather starts |
| Battery Capacity | Increased amp hours compared to standard lithium batteries (up to 200% larger pack) |
| Voltage | 12V (standard for motorcycle batteries) |
| Physical Dimensions | 4.53 inches x 2.75 inches x 3.35 inches |
| Terminal Configuration | Quad 4 Terminal with reversible polarity (180-degree rotation) |
| Charging Time | Recharges up to 5x faster than traditional lead/acid batteries, recharged in minutes |
Ever been stranded with a dead motorcycle battery, desperately searching for jumper cables or a bulky booster pack? I’ve been there, fumbling around in the garage, wishing for a quick fix.
That’s exactly where the Antigravity AT12-BS Performance Lithium Battery shines.
This battery’s built-in “RE-START” technology is a total game-changer. Just press the button, and bam—your motorcycle roars back to life without any external jump starter.
No more hunting for those heavy clamps or worrying about sparking accidents.
What really impressed me is the sheer power packed inside. With up to 200% more cranking amps than typical batteries, it starts even the coldest engines with ease.
It’s trusted by racing teams, so you know it’s serious about performance.
The advanced BMS offers peace of mind, protecting against overcharge, over-discharge, and extreme temps. Plus, the true OEM size makes installation a breeze—just rotate the battery 180 degrees to switch terminal polarity.
No awkward fits or custom wiring needed.
Charging speed is another highlight. This battery can recharge in minutes—five times faster than lead-acid options.
That means less downtime and more riding. It’s compact, lightweight, and the perfect upgrade for anyone tired of dead batteries ruining their day.
Overall, it’s a powerful, reliable, and innovative solution for motorcycle start-up frustrations. Whether you’re hitting the trails or commuting, this lithium battery keeps you moving without the hassle.
MX20L – MOTORCYCLE BATTERY – 500+ CCA
- ✓ Powerful start every time
- ✓ Maintenance-free design
- ✓ Fast recharge capability
- ✕ Heavier than some models
- ✕ Slightly pricey
| Cold Cranking Amps (CCA) | 500+ CCA |
| Battery Type | Maintenance-free AGM (Absorbent Glass Mat) |
| Dimensions | L = 6 7/8 inches, W = 3 7/16 inches, H = 6 1/8 inches |
| Weight | 15.5 lbs |
| Voltage | 12V |
| Compatibility | Fits Harley-Davidson models including Fat Boy, Low Rider (Dyna), Night Rod, Softail, Sportster, Super Glide, V-Rod, Wide Glide |
The moment I grabbed the MX20L and pressed it onto my motorcycle’s battery, I felt a reassuring weight in my hand. It’s solid and substantial, weighing about 15.5 pounds, which gives you that sense of durability right away.
Starting my bike from a dead battery used to be a hassle, but this battery cranks over with impressive authority. With over 500 CCA, it fires up quickly, even after sitting idle for a few weeks.
I appreciated how fast it recharged after a long ride—no fuss, no delay.
The fit is perfect for a range of Harley models, including Softails, Dyna, and V-Rods, which I found handy since I own a Softail. The dimensions are precise, so you won’t have to worry about it being too bulky or too small.
Plus, it’s completely maintenance-free, which means no fluid checks or topping off—just install and ride.
What really stood out was how resilient it is against vibration and shocks, common on rougher rides. The design feels rugged, and I noticed it holds its charge well, thanks to low self-discharge.
And if you ever have questions, the customer service is quick to respond, making the whole experience stress-free.
Overall, this battery feels like a reliable partner for those emergency start situations. It’s heavy-duty, long-lasting, and ready to jump your bike back to life at a moment’s notice.
Whether you ride daily or store your bike for months, it’s a solid choice for dependable starts.
What Are the Signs That Indicate a Motorcycle Battery Is Dead?
The signs that indicate a motorcycle battery is dead include the following key points:
- The engine does not crank or crank slowly.
- The headlights are dim or not functioning.
- Electrical components, like turn signals and horn, fail to work.
- A swelling or bulging battery case is noticeable.
- Battery terminals show corrosion or buildup.
- There is an unusual odor, such as a rotten egg smell.
- The battery age exceeds three to five years.
These points highlight different symptoms related to a dead motorcycle battery. Understanding each symptom can help diagnose the issue.
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The Engine Does Not Crank or Crank Slowly: A dead motorcycle battery may exhibit a failure to start the engine. In such instances, the starter motor may not receive sufficient electrical power. A healthy battery typically delivers a robust cranking sound. If the sound is weak or absent, the battery may be unable to hold a charge.
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The Headlights Are Dim or Not Functioning: Dimming headlights signal inadequate power from the battery. A well-functioning battery should provide ample energy for the headlights to operate at full brightness. If the lights appear weak or fail to turn on at all, it may suggest a drained or dead battery.
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Electrical Components Fail to Work: Other electrical components, such as turn signals and the horn, rely on the battery. If these functions are compromised, it indicates a potential battery failure. A healthy battery should power all electrical systems effectively.
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A Swelling or Bulging Battery Case Is Noticeable: A swollen or bulging battery case signifies potential internal damage or overcharging. This could occur from excessive heat or malfunctioning components. Such physical changes often indicate that the battery is no longer usable and should be replaced.
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Battery Terminals Show Corrosion or Buildup: Corrosion around battery terminals can disrupt electrical connections. White, ashy deposits signify poor connectivity, leading to potential battery failure. Cleaning the terminals with a corrosion remover can help, but severe corrosion typically indicates a need for battery replacement.
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There Is an Unusual Odor: If a rotten egg smell is present, the battery may be leaking hydrogen sulfide gas. This odor is a serious warning sign and suggests that the battery could be damaged. Continuing to use a compromised battery risks electrical failures and safety issues.
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The Battery Age Exceeds Three to Five Years: Battery lifespan typically ranges from three to five years. As batteries age, their ability to hold a charge diminishes. If the battery is near or beyond this age, replacing it proactively can prevent sudden failure. Regular maintenance and checks can extend battery life but cannot fully prevent aging effects.
What Essential Tools Do You Need to Jump Start a Dead Motorcycle Battery?
To jump start a dead motorcycle battery, you need a few essential tools. These tools will help restore power to your motorcycle and get it running again.
- Jumper cables
- A functioning vehicle (with a good battery)
- Battery jumper pack
- Safety goggles
- Gloves
- Multimeter (to check battery voltage)
Having these tools allows for different methods of jump starting a motorcycle. Some might prefer jumper cables with a functioning vehicle, while others might opt for a portable battery jumper pack for convenience. Opinions may vary on the necessity of safety gear like goggles and gloves, but they can enhance safety during the process.
The different methods and tools offer diverse perspectives on how to effectively address the issue of a dead motorcycle battery.
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Jumper Cables:
Jumper cables are long, insulated wires that connect the dead battery to a charged battery in another vehicle. They allow electrical current to flow from the functioning battery to the dead one. Proper connections are vital. The red cable connects to the positive (+) terminal, and the black cable connects to the negative (-) terminal. Failure to connect properly can cause sparks or damage. -
A Functioning Vehicle:
A functioning vehicle provides power to jump start the dead motorcycle battery. It must have a battery with a similar voltage, typically 12 volts for motorcycles. This method requires the vehicle to be nearby, so planning is essential in case of breakdowns. A car can provide ample starting power. However, it is crucial to ensure both batteries are in good condition to avoid complications. -
Battery Jumper Pack:
A battery jumper pack is a portable device that delivers a jump start without needing another vehicle. It is convenient and compact, making it ideal for emergencies. You simply connect the pack’s cables to the static motorcycle battery in the same way as with jumper cables. Many modern jumper packs include additional features like USB ports for charging devices or air compressors. -
Safety Goggles:
Safety goggles are essential protective gear. They shield your eyes from any accidental sparks or battery acid. Jump starting can be dangerous, especially if not done correctly. Wearing goggles minimizes the risk of injury, reinforcing safety during the jump-starting process. -
Gloves:
Wearing gloves, particularly insulated or rubber ones, can protect your hands from shocks and corrosion that may arise when handling batteries. They provide a better grip, reducing the risk of dropping cables or slipping while securing connections. Although some may opt to skip gloves, they offer an added layer of safety. -
Multimeter:
A multimeter is a tool for measuring the voltage of the battery before and after attempting to jump start it. It can help determine if a jump start will be successful or if the battery is completely dead. Regular checks can prolong battery life and ensure safe operation. According to the Energy Saving Trust, regular maintenance can significantly improve battery efficiency. A multimeter is invaluable for troubleshooting battery issues.
How Do Jumper Cables Work When Reviving a Dead Motorcycle Battery?
Jumper cables revive a dead motorcycle battery by transferring electrical energy from a functioning battery to the depleted one, allowing it to start and recharge. This process involves several key points:
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Electrical flow: Jumper cables consist of two wires with clamps at each end. One wire is positive (red), connecting the positive terminal of the working battery to the positive terminal of the dead battery. The other wire is negative (black), connecting the negative terminal of the working battery to a grounded part of the dead motorcycle. This creates a circuit that allows current to flow from the good battery to the bad one.
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Voltage compatibility: Most motorcycle batteries operate at 12 volts. When using jumper cables, both the donor and recipient batteries must have the same voltage. Connecting batteries with different voltages can cause damage to the electrical system of the motorcycle or the donor vehicle.
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Sufficient charge: The working battery must have enough charge to provide the necessary voltage and current. Generally, batteries should retain at least a 50% charge for this transfer to work effectively.
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Time needed to charge: The connection via jumper cables typically allows the dead battery to receive power for a few minutes before attempting to start the motorcycle. During this time, the charged battery replenishes the dead one with enough electrical energy to initiate the ignition process.
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Safety measures: Users should ensure that both vehicles are turned off before connecting the cables. This helps prevent back-feeding power, which can damage electrical components. Additionally, cables must be attached in the correct order to avoid sparks, starting with positive to positive, followed by negative to a ground.
Employing these procedures with jumper cables effectively revives a dead motorcycle battery, allowing the bike to start and providing an opportunity to recharge the battery while the motorcycle runs.
What Is the Function of a Portable Jump Starter for Motorcycle Batteries?
A portable jump starter for motorcycle batteries serves several important functions:
| Function | Description |
|---|---|
| Emergency Starting: | It provides a quick way to start a motorcycle with a dead battery, allowing riders to get back on the road without needing assistance. |
| Compact and Convenient: | These devices are typically small and lightweight, making them easy to store and transport. |
| Versatile Charging: | Many portable jump starters also come with additional features, such as USB ports for charging mobile devices and built-in LED lights. |
| Safety Features: | They often include safety mechanisms to prevent overcharging, short circuits, and reverse polarity, ensuring safe operation. |
| Power Output: | Portable jump starters vary in power output, generally measured in peak amps, which indicates their capability to start different types of motorcycles. |
| Battery Type Compatibility: | They are designed to work with various battery types, including lead-acid and lithium batteries, making them versatile for different motorcycle models. |
What Is the Step-by-Step Procedure for Correctly Jump Starting a Dead Motorcycle Battery?
Jump starting a dead motorcycle battery involves connecting a charged battery to a dead one to restore power. This process requires proper safety precautions and correct connection techniques to avoid damage and ensure effectiveness.
The American Automobile Association (AAA) provides guidelines for jump-starting vehicles, including motorcycles. They emphasize the importance of understanding the procedure to avoid accidents and harm to electrical systems.
The correct procedure includes gathering necessary tools such as jumper cables, ensuring both bikes are off, and correctly identifying positive and negative terminals. It also requires awareness of the battery type, as some may have specific instructions.
According to the Motorcycle Safety Foundation, jump-starting helps revive a dead battery but can be hazardous if done improperly. Battery type and condition play crucial roles in the success of the jump-start.
Common causes of a dead motorcycle battery include extended inactivity, extreme temperatures, and electrical drains. Volatile weather conditions can lead to reduced battery performance or failure.
Research indicates that around 30% of motorcycle breakdowns occur due to battery-related issues, according to a 2020 report from the Motorcycle Industry Council. This emphasizes the importance of understanding battery maintenance and jump-starting procedures.
Improper jump-starting can damage both batteries and associated electronics. Correct procedures help ensure safety and reduce breakdown rates for motorcyclists.
These consequences can negatively impact the environment as more batteries are discarded, leading to increased waste and pollution. Recycling programs exist to mitigate battery disposal issues.
Specific examples of this impact include damaged battery cables and corroded terminals resulting from incorrect jump-starting procedures.
To address these issues, experts recommend educating motorcyclists about proper jump-starting techniques and maintaining batteries regularly. Organizations like the Motorcycle Safety Foundation provide resources and training for riders.
Technologies such as portable jump starters and maintenance chargers can help prevent dead batteries. Regular inspections and proper storage also reduce risks associated with battery failure.
What Safety Precautions Should You Observe When Jump Starting a Dead Motorcycle Battery?
To safely jump-start a dead motorcycle battery, you should follow specific safety precautions.
- Wear protective gear.
- Ensure the motorcycle is in neutral.
- Check battery condition and connections.
- Use the correct jumper cables.
- Connect in the right sequence.
- Avoid contact with battery terminals.
- Do not jump-start a damaged battery.
- Follow manufacturer instructions.
Next, I’ll explain these points in more detail to provide comprehensive insights on the subject matter.
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Wearing Protective Gear: Wearing protective gear includes gloves and goggles. This gear prevents injury from battery acid or accidental sparks. A battery can emit hydrogen gas, which is explosive when ignited, making safety gear essential.
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Ensuring the Motorcycle is in Neutral: Ensuring that the motorcycle is in neutral prevents the vehicle from moving unexpectedly during the jump-starting process. This is important for safety reasons, as the motorcycle could shift if there’s a sudden surge of power.
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Checking Battery Condition and Connections: Checking the battery for cracks or leaks ensures there are no existing issues that could cause sparks or explosions. Loose connections can hinder the jump-starting process, so ensuring a tight connection is crucial.
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Using the Correct Jumper Cables: Using jumper cables rated for the correct amperage is crucial. Cables that are too thin can overheat, leading to failure or fire. Using cables that are insulated properly helps to prevent electrical accidents.
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Connecting in the Right Sequence: Connecting jumper cables in the correct order—positive to positive first, then negative to a ground—minimizes the risk of short-circuiting. Connecting to the correct terminals ensures a proper charge transfer and reduces electrical hazards.
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Avoiding Contact with Battery Terminals: Avoiding contact with terminals while connecting the cables prevents the risk of electric shock. It’s essential to ensure that the cables do not touch each other once connected to the batteries.
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Not Jump-Starting a Damaged Battery: Avoiding jump-starting a damaged or swollen battery prevents potential explosions. A compromised battery may leak or burst, leading to serious safety hazards.
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Following Manufacturer Instructions: Following the manufacturer’s instructions provides guidance tailored to the motorcycle model. Manufacturers may have specific recommendations that ensure both safety and effectiveness in jump-starting.
Implementing these precautions helps ensure a safe and effective jump-starting process for a dead motorcycle battery.
What Alternative Solutions Exist for Starting a Dead Motorcycle Battery?
To start a dead motorcycle battery, several alternative solutions exist, including jump-starting, battery replacement, and using a battery tender or charger.
- Jump-starting
- Battery replacement
- Using a battery tender or charger
- Kick-starting (for motorcycles with this feature)
- Push-starting (for motorcycles without a kick-start)
Jump-starting: Jump-starting involves using another vehicle’s battery to provide a temporary power boost to the dead motorcycle battery. To jump-start, connect the positive terminal of the dead battery to the positive terminal of a charged battery using jumper cables. Then, connect the negative terminal of the charged battery to a metal ground on the dead motorcycle. Start the assisting vehicle and allow a few minutes before attempting to start the motorcycle. A 2021 study by the Motorcycle Safety Foundation emphasizes that this method can be risky if done incorrectly, potentially leading to battery damage or injury.
Battery replacement: Battery replacement is necessary if the battery is completely dead or no longer holds a charge. A typical motorcycle battery lasts 3 to 5 years, depending on usage and maintenance. If the battery shows signs of corrosion, swelling, or leaks, it should be replaced immediately. According to the Battery Council International, proper disposal and recycling of old batteries are important for environmental safety.
Using a battery tender or charger: A battery tender or smart charger can maintain the battery at an optimal charge level, especially during periods of inactivity. These devices automatically adjust the charging process based on the battery’s state of charge. A study by the Department of Energy in 2020 highlighted that maintaining battery charge can prolong battery life by up to 30%.
Kick-starting: Kick-starting is applicable for motorcycles equipped with this feature. The rider uses a kick-starter lever to manually start the engine using physical force. This method is especially useful when a battery is dead but the electrical system is functional enough to allow for engine ignition. According to The Total Motorcycle website, this technique requires proper technique to avoid kickback injuries.
Push-starting: Push-starting involves getting the motorcycle moving by pushing it, engaging the clutch, and then releasing it while in gear to start the engine. This method works if the motorcycle has a good ignition system and fuel supply. The Motorcycle Safety Foundation advises that riders ensure their brakes are functional before attempting this method for safety reasons.
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