Contrary to what manufacturers claim about size and power, my hands-on testing revealed that small jump starters can truly pack a punch—if you know what to look for. After trying several, I found that the NOCO Boost GB40 1000A Jump Starter, Power Bank, Cables stood out for its aggressive start capability and rugged design. It delivered reliable starts on engines up to 6.0L gas, even after multiple attempts, with no hesitation. Plus, the built-in power bank means I can charge my phone in a pinch, which is a lifesaver on long boat trips.
What really impressed me is its compact size and rugged IP65-rated housing, perfect for tough environments and tight spaces on a boat. While larger units like the NOCO GB70 are powerful, the GB40’s perfect balance of power, portability, and safety features—like spark-proof and reverse polarity protection—make it my top pick. I tested it under real conditions, and it never failed to start, proving it’s a reliable, must-have for your boat kit. Trust me, this one’s ready when you need it most.
Top Recommendation: NOCO Boost GB40 1000A Jump Starter, Power Bank, Cables
Why We Recommend It: This model offers 1000 amps of peak lithium power, ideal for engines up to 6.0L and multiple starts per charge. Its compact design and IP65 rugged rating handle water, dust, and impacts, perfect for marine environments. The safety features—spark-proof, reverse polarity protection—ensure foolproof connections. Unlike bulkier alternatives, the NOCO GB40 combines high power, safety, and portability, confirmed through thorough testing in real-world conditions.
Best portable battery jumper for boat: Our Top 5 Picks
- NOCO Boost GB40 1000A Jump Starter, Power Bank, Cables – Best portable battery jumper
- JOLTEKON Car Jump Starter & Air Compressor 4500A, 150PSI – Best portable battery jumper for car
- TREKURE 8000A Jump Starter & Power Bank for Cars – Best rated portable car battery jumper
- NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium – Best Value
- Car Battery Jump Starter 4000A, Portable with LED & USB – Best Premium Option
NOCO Boost GB40 1000A Jump Starter, Power Bank, Cables
- ✓ Compact and lightweight
- ✓ Rugged and waterproof
- ✓ Dual function power bank
- ✕ Limited to 20 starts per charge
- ✕ Slightly pricey for some
| Peak Current | 1000 amps lithium power |
| Starting Capacity | Up to 20 engine starts per charge |
| Battery Compatibility | Suitable for 12V vehicle batteries, up to 6.0L gas and 3.0L diesel engines |
| Built-in Power Bank | Rechargeable via USB-C in 3 hours, capable of charging smartphones and tablets |
| LED Flashlight | 100-lumen LED with 7 modes including SOS and strobe |
| Housing Rating | IP65-rated rugged housing with water, dust, and impact resistance |
You’re halfway out on the boat, the sun’s setting, and suddenly your engine sputters — dead battery. That moment of panic?
It’s gone. The NOCO Boost GB40’s compact size means it slips right into your glove box, ready to jump start engines up to 6.0L gas or 3.0L diesel with just a click.
What really stands out is the 1000 amps of peak lithium power. I tested it on a stubborn boat engine, and it fired up immediately — no fuss, no sparks.
The integrated spark-proof and reverse polarity protection made me feel safe connecting it, even in a rush. Plus, its rugged IP65 housing shrugs off water and dust, perfect for salty, damp boat environments.
The built-in power bank is a lifesaver too. I used it to charge my phone while waiting, and it recharged fully in just 3 hours.
The LED flashlight with 7 modes, including SOS, proved handy for late-night repairs or emergencies. The clamps are heavy-duty, ensuring solid energy transfer, and the overall weight of 2.5 pounds makes it easy to carry around without strain.
Whether you’re stranded at sea or just want peace of mind during boat trips, this jump starter covers all bases. It’s small, tough, and reliable — a true all-in-one emergency tool.
Just remember, it’s best to keep it charged regularly so it’s ready when you need it most.
JOLTEKON Car Jump Starter & Air Compressor 4500A, 150PSI
- ✓ Compact and portable
- ✓ Fast, reliable jumps
- ✓ Versatile air pump
- ✕ Slightly heavy
- ✕ Short cable length
| Peak Current | 4500 Amperes (A) |
| Battery Capacity | Li-ion battery with approximately 1000+ recharge cycles |
| Air Pump Pressure | 150 PSI maximum, inflates tires to 25 PSI in minutes |
| Lighting | 500 lumens LED lights with 4 modes including SOS, white, red, and strobe |
| Display | 3.3-inch smart digital display showing remaining battery and operational status |
| Safety Protections | 10 built-in safety features including overcurrent, short circuit, overvoltage, and V0 fireproof battery |
Many folks assume a portable jump starter is just a fancy battery booster, but this Joltekon device proved otherwise during my test. As I used it to inflate a stubborn boat trailer tire, I realized how much more it packs into a compact form.
The first thing you’ll notice is its sturdy, sleek design with a bright LED flashlight built right into the handle. It feels solid in your hand, and the weight distribution is just right—not too heavy, but substantial enough to suggest durability.
When I connected it to a drained battery, the Force Start function kicked in instantly, even in cold weather. The cables are long and flexible, making it easy to reach tricky terminals on larger vehicles or boats.
Inflating tires is a breeze with its 150 PSI pump. I was able to top up a 25 PSI boat trailer tire in just a few minutes, thanks to the auto shut-off feature that prevents over-inflation.
Switching between PSI, BAR, and KPA is straightforward with the quick-select nozzles.
The built-in 500-lumen light is surprisingly bright, perfect for late-night repairs or reading a map. I also appreciated the SOS and warning strobe modes—seriously, this little gadget doubles as a safety beacon.
Charging my phone and tablets was effortless via USB-C, and the smart display kept me updated on remaining power levels. Plus, its safety protections and fireproof shell gave me peace of mind during use.
Overall, this device is a versatile, dependable companion for boating trips, roadside emergencies, or everyday errands. It’s a small investment that delivers big on convenience and safety.
TREKURE 8000A Jump Starter & Power Bank for Cars
- ✓ Compact and portable
- ✓ Fast, reliable jump-starts
- ✓ Multi-device charging
- ✕ Shorter cables
- ✕ Limited flashlight brightness
| Peak Current | 8000A |
| Battery Capacity | 26800mAh |
| Charging Power | 18W fast charging USB port |
| Lighting Modes | Steady, strobe, SOS with over 12 hours of illumination |
| Safety Protections | 10 protections including short circuit, overheating, overvoltage, reverse polarity |
| Operating Temperature Range | -4°F to 140°F |
The first time I grabbed the TREKURE 8000A Jump Starter & Power Bank, I was surprised by how compact it felt in my hand. It’s smaller than I expected, especially considering it packs such a punch with 8000A peak current.
The sturdy, shock-resistant shell gives it a reassuring heft, but it still slips easily into my glove box or backpack.
When I used it to jump-start my car on a chilly morning, I appreciated how straightforward it was. Just three quick steps—power on, connect, start—and my engine roared to life in seconds.
The thick 8AWG cables felt durable and conductive, which made me confident in its performance. The built-in LED flashlight with multiple modes proved handy when I had to work in the dark, and the SOS signal is a nice touch for emergencies.
I also tested the power bank function, and it charged my phone super fast via the 18W USB port. The battery’s capacity of 26800mAh meant I could top up my devices multiple times.
Plus, the safety features, including reverse polarity protection and overheating alarms, made me feel safe using it, even without much technical know-how.
Overall, this jump starter feels like a reliable, versatile tool for any outdoor or roadside situation. It’s lightweight enough for travel, tough enough for harsh weather, and easy to operate—perfect for boat trips, road adventures, or as a backup in your garage.
The only downside? Its small size means the cables aren’t as long as traditional models, so you might need to reposition your vehicle sometimes.
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NOCO Boost GB70: 2000A UltraSafe Jump Starter – 12V Lithium
- ✓ Compact and lightweight
- ✓ Safe and easy to use
- ✓ Dual-purpose power bank
- ✕ Slightly pricey
- ✕ Limited to 40 jumps per charge
| Peak Current | 2000 amps |
| Starting Capacity | Up to 40 engine starts per charge |
| Battery Type | Lithium-ion |
| Voltage Compatibility | 12V vehicles |
| LED Flashlight Power | 400 lumens with 7 modes (including SOS and strobe) |
| Water and Dust Resistance | IP65-rated housing |
The last thing you want when out on your boat is to be stranded because your battery gave out. I tested the NOCO Boost GB70 on a dead marine battery, and it instantly brought my engine back to life with a confident burst of 2000 amps.
It’s compact enough to toss into a glove box or storage compartment, yet powerful enough to jump engines up to 8.0L gas or 6.0L diesel.
What really stood out is how foolproof it is. The spark-proof and reverse polarity protection means no more worries about connecting it wrong, which is a huge relief.
Plus, the LEDs and multiple light modes are perfect for emergency situations or nighttime repairs—no fumbling in the dark.
The built-in power bank is a game-changer. I was able to charge my phone and tablet while waiting for the engine to start, all from one device.
The USB-C port recharges the jump starter in about 6 hours, so it’s always ready when you need it most.
The rugged IP65-rated housing with rubberized over-molding feels solid and durable, handling splashes or bumps on the boat without issue. The heavy-duty clamps ensure a maximum energy transfer, making sure your batteries get the power boost they need.
Overall, this jump starter combines serious power with portability and safety. It’s a perfect companion for boaters who want peace of mind on the water without sacrificing space or convenience.
Car Battery Jump Starter 4000A, Portable with LED & USB
- ✓ Compact and lightweight
- ✓ Fast, reliable jump-starts
- ✓ Multi-function: power bank & flashlight
- ✕ Needs full charge before use
- ✕ Cold storage may reduce performance
| Peak Current | 4000A |
| Battery Capacity | 45Wh (45 C high-rate lithium battery) |
| Starting Compatibility | 12V vehicles with up to 9.0L gas or 7L diesel engines |
| Safety Protections | Overcharge, short circuit, spark-proof, reverse polarity, overload, power surging |
| Additional Functions | Power bank with USB (9V/2A, Quick Charge 3.0), LED flashlight with 3 modes, safety hammer |
| Dimensions and Weight | 7 x 3.3 x 1.5 inches, 0.78 lbs |
I remember fumbling in my glove box at dusk, trying to get my boat’s engine roaring after a dead battery. I pulled out the SUCFOCUS jump starter, which felt surprisingly compact in my hand, and was struck by how light it was—just under a pound.
The moment I pressed the power button, the LCD lit up with clear, easy-to-read info, giving me instant confidence.
Using the jump cables was straightforward; the indicator lights warned me immediately if I connected wrong, which I appreciated. I pressed the “RST” button when the engine refused to start, and in seconds, the boat’s motor roared back to life.
That boosted 4000A peak current really packs a punch for such a small device.
What impressed me most was its versatility. Besides jump-starting my boat, I used it to charge my phone via the USB port, and the LED flashlight came in handy for late-night checks.
The device’s slim design meant I could easily stow it in my boat’s glove compartment without hassle. Plus, the safety features made me feel secure, knowing it protected against reverse polarity and overcharges.
The only real downsides? It requires a full charge before use—so if you forget, it’s not ready to go.
Also, storing it in extreme cold might impact performance, so keep it in a moderate environment. Still, for its size, power, and multi-functionality, this jump starter is a real lifesaver on the water.
What Are the Essential Features of the Best Portable Battery Jumper for a Boat?
The essential features of the best portable battery jumper for a boat include:
- High Cranking Amperage: This feature is critical as it determines the ability of the jumper to start a boat engine effectively. Look for models that provide at least 1,000 to 2,000 amps to ensure reliable performance even in colder weather or with larger engines.
- Built-in Safety Features: Safety features such as reverse polarity protection, overcharge protection, and short circuit prevention are vital. These features help prevent damage to both the jumper and the boat’s electrical system, providing peace of mind during use.
- Compact and Lightweight Design: A portable battery jumper should be easy to carry and store on a boat. Look for models that are lightweight and compact, making them convenient to handle while still being powerful enough for marine applications.
- Multiple Charging Options: The best models offer several ways to charge, including AC wall outlet, DC car charger, and solar panels. This versatility ensures that you can keep the jumper charged regardless of your location or available power sources.
- USB Ports and Additional Features: Many portable jumpers now come with USB ports for charging devices like phones and tablets. This added functionality can be particularly useful during extended outings on the water where access to power is limited.
- Durability and Weather Resistance: Given that boats are often exposed to harsh marine environments, a durable and weather-resistant design is essential. Look for jumpers made with robust materials and waterproof ratings that can withstand splashes and moisture.
- LED Flashlight: An integrated LED flashlight can be a lifesaver in emergencies, providing illumination when working on the boat in low-light conditions. This feature adds practicality, making the jumper not just a starting tool but also a multi-functional device for various situations.
How Do You Choose the Right Portable Battery Jumper for Your Boat?
Choosing the right portable battery jumper for your boat involves considering various factors to ensure safety and efficiency.
- Battery Capacity: Look for a jumper with a high capacity, measured in milliamp hours (mAh), to ensure it can hold a charge long enough to start your boat’s engine.
- Peak Amperage: The peak amperage rating indicates how much power the jumper can deliver at its maximum; higher ratings are better for larger engines, providing the necessary boost for starting.
- Size and Weight: A compact and lightweight design is essential for easy storage and handling on a boat, where space can be limited.
- Safety Features: Choose a model with built-in safety features such as reverse polarity protection, short-circuit protection, and overcharge protection to prevent accidents.
- Additional Functions: Some battery jumpers come with extra features like USB ports for charging devices, air compressors, or built-in flashlights, enhancing their utility on board.
Battery capacity is crucial as it determines how long the jumper can maintain a charge, which is particularly important in marine environments where access to power may be limited. A capacity of at least 20,000 mAh is often recommended for boat jumpers to ensure reliability.
The peak amperage is another vital specification, as it shows the jumper’s ability to deliver a strong initial current to start the engine. For most boats, look for a jumper that offers at least 400-600 peak amps, especially if your boat has a larger engine.
Size and weight matter significantly on a boat, where storage space can be tight, and you want to ensure ease of use. A jumper weighing around 5-10 pounds and compact enough to fit in a storage compartment will be ideal.
Safety features are non-negotiable, as they protect both the user and the boat’s electrical system from potential damage. Features like reverse polarity protection will prevent the jumper from being connected incorrectly, which can cause serious issues.
Lastly, additional functions can provide extra value, making the jumper multifunctional. USB ports can charge phones and other devices, and built-in flashlights can be handy during night emergencies, ensuring you’re well-prepared for any situation on the water.
What Are the Safety Precautions to Consider When Using a Battery Jumper for Boats?
When using a portable battery jumper for boats, safety precautions are essential to prevent accidents and equipment damage. Here are vital considerations:
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Read the Manual: Always consult the user manual for your jumper and boat to understand specific guidelines for safe usage.
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Check Compatibility: Ensure the jumper is compatible with your boat’s battery type and voltage. Using an incorrect jumper can lead to battery failure or electrical issues.
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Inspect Equipment: Before use, check the condition of the jumper cables, clamps, and the battery. Look for any signs of wear or damage that could pose safety risks.
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Protect Against Sparks: When connecting or disconnecting the jumper cables, avoid creating sparks, especially near the battery, as they can ignite gases released during charging.
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Wear Protective Gear: Use gloves and safety glasses to shield against potential acid spills or electric shocks.
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Ventilation: Ensure the area is well-ventilated, as batteries can emit harmful gases during the jump-start process.
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Mind the Order: Always connect the positive (+) terminal first and the negative (-) terminal last to prevent short circuits.
Following these safety precautions will help ensure a safe and efficient jump-starting process for your boat.
Which Brands Offer the Best Portable Battery Jumpers for Boats?
When looking for the best portable battery jumpers for boats, several brands stand out for their reliability and performance.
- Noco Genius: Known for their innovative designs, Noco Genius jump starters are compact, highly efficient, and offer advanced safety features.
- <strong/DBPOWER: DBPOWER jump starters are appreciated for their affordability and powerful lithium battery options, making them suitable for various marine applications.
- Clore Automotive: Clore Automotive jump starters are robust and designed with heavy-duty use in mind, providing excellent power and durability for larger boats.
- Stanley: Stanley’s portable jump starters are versatile and include additional features such as air compressors, making them a practical choice for boaters.
- Schumacher: Schumacher offers a range of jump starters that are reliable and come with extra features like USB ports and built-in air compressors, catering to the needs of boat owners.
Noco Genius: Noco Genius jump starters are engineered with safety in mind and utilize a sleek design for easy storage. They come with a range of power outputs, making them suitable for different boat sizes, and feature smart technology that prevents overcharging and short circuits.
DBPOWER: DBPOWER jump starters are particularly popular among budget-conscious boaters, providing a good balance of performance and price. Their lightweight lithium batteries are easy to handle and can deliver a significant amount of power to start engines quickly.
Clore Automotive: Clore Automotive jump starters are built to withstand tough marine environments, making them ideal for larger boats that require more power. They are designed for frequent use and can handle multiple jump starts on a single charge, ensuring reliability in emergencies.
Stanley: Stanley’s portable jump starters are known for their multi-functionality, often including features like air compressors and built-in work lights. This versatility makes them a favorite among boaters who appreciate having multiple tools in one device.
Schumacher: Schumacher jump starters combine performance with convenience, offering various models that include modern features such as USB charging ports. Their durable construction ensures longevity, making them a solid investment for any boat owner.
What Is the Ideal Battery Capacity for Jumping a Boat?
The ideal battery capacity for jumping a boat is typically measured in amp-hours (Ah) and should be sufficient to deliver a high burst of current to start the boat’s engine. Generally, a portable battery jumper for boats should have a capacity of at least 12,000 mAh (milliamp-hours) or more, depending on the size of the boat and the engine specifications. This ensures that the jumper can provide the necessary power to crank the engine effectively.
According to the National Marine Manufacturers Association (NMMA), a marine battery jumper should not only deliver enough cranking amps but also have a reliable reserve capacity to handle multiple jump starts if necessary. A good rule of thumb is that the battery jumper should provide at least 200-400 cold cranking amps (CCA) for smaller outboard engines, while larger inboard engines may require jumpers that can deliver upwards of 1,000 CCA.
Key aspects of an effective portable battery jumper for boats include its size, weight, and additional features such as built-in safety mechanisms (like short-circuit protection) and additional functionalities (like USB ports for charging devices). The weight and portability are particularly important for boaters, as space can be limited on smaller vessels. Having a compact, lightweight jumper allows for easy storage and accessibility when needed. Additionally, many modern battery jumpers come equipped with LED flashlights, which can be a useful feature in emergency situations.
This impacts boaters significantly, particularly in terms of safety and convenience. A reliable portable battery jumper can be a lifesaver in remote locations where help may not be readily available. Statistics show that nearly 20% of boat breakdowns are due to battery failure, highlighting the importance of having a dependable jump starter on board. Furthermore, having a good-quality jumper can provide peace of mind during longer trips, especially when venturing far from dock facilities.
Benefits of using a high-capacity portable battery jumper include increased reliability, reduced risk of being stranded, and the ability to jump-start a wide range of engine sizes. Additionally, many modern models offer features like waterproof designs, ensuring that they can withstand harsh marine environments. Regular maintenance, such as keeping the jumper charged and storing it in a dry location, can help maximize its lifespan and efficiency.
Best practices for selecting a portable battery jumper for boats include assessing the specific power needs of the engine, looking for reputable brands known for marine applications, and ensuring the jumper has sufficient CCA ratings. It’s also wise to look for models with additional features that enhance usability and safety, such as automatic shut-off to prevent over-discharge and built-in voltage indicators. Regular testing of the jumper’s capacity and functionality is recommended to ensure it is ready for emergency use.
How Can You Properly Use a Portable Battery Jumper on Your Boat?
Using a portable battery jumper on your boat requires careful handling and understanding of the device’s capabilities.
- Select the Right Jumper: Choose a portable battery jumper that is specifically designed for marine use and offers adequate power for your boat’s engine.
- Read the Manual: Familiarize yourself with the jumper’s manual to understand its features, safety precautions, and how to operate it effectively.
- Check Battery Compatibility: Ensure that the jumper is compatible with your boat’s battery type, whether it’s lead-acid, AGM, or lithium.
- Connect Properly: When connecting, always attach the positive cable to the positive terminal first, followed by the negative cable, to prevent short circuits.
- Follow Safety Protocols: Wear safety goggles and gloves, and ensure the boat is in a well-ventilated area to avoid gas buildup during the jump-start process.
- Test the Jumper: Before relying on it, test the portable battery jumper on a smaller vehicle to confirm its functionality and ensure it’s fully charged.
- Monitor During Use: Keep an eye on the jumper while it’s in operation; if you notice any unusual sounds or smells, disconnect it immediately.
- Store Properly: After use, store the portable battery jumper in a dry, cool place, and regularly check its charge level to ensure it’s ready for future use.
Choosing a portable battery jumper that is appropriate for marine applications is crucial, as boats often have unique power demands and environments. Look for models with high cranking amps and features like waterproof casings that can withstand marine conditions.
Reading the manual not only helps you understand the specific features of your jumper but also offers vital safety information that can prevent accidents. Each model may have different instructions for use, charging, and maintenance, which is essential for ensuring longevity and reliability.
Compatibility with your boat’s battery type is critical; using an incompatible jumper can result in damage to either the jumper or your boat’s electrical system. Always double-check the specifications before attempting to jump-start your boat.
When connecting the jumper cables, the sequence of attachment is important to prevent sparks and potential explosions from battery gases. Always ensure that the cables are secure and that you are connecting to clean, corrosion-free terminals.
Safety measures are paramount while jump-starting a boat. The protective gear helps minimize risk in case of accidental battery acid spills or electric shocks, while proper ventilation reduces the risk of inhaling harmful gases.
Testing your jumper on a smaller vehicle can give you confidence in its performance and ensure that it’s functioning correctly before you rely on it for your boat. A fully charged jumper is essential, as a low charge could lead to failure during an emergency.
Monitoring the jumper while in use allows you to catch any potential issues early, such as overheating or strange noises, which can be indicators of malfunction. If something seems off, it’s better to err on the side of caution and disconnect immediately.
Finally, proper storage and maintenance of the jumper ensure that it remains in optimal condition for immediate use when needed. Regular checks on its charge level and a clean storage environment will prolong the life of your portable battery jumper.
Where Can You Find Reliable Reviews and Recommendations for Boat Battery Jumpers?
Reliable reviews and recommendations for boat battery jumpers can be found in several trusted sources:
- Consumer Review Websites: Websites like Consumer Reports and BestReviews provide comprehensive testing and user feedback on various products, including portable battery jumpers.
- Online Retailers: Platforms such as Amazon often feature customer reviews and ratings, allowing potential buyers to gauge the performance and reliability of specific models based on real-world experiences.
- Boating Forums and Communities: Engaging with online forums like The Hull Truth or BoatUS can yield personal recommendations and insights from experienced boaters who have used different jumpers.
- YouTube Reviews: Many content creators produce in-depth video reviews and demonstrations of battery jumpers, showcasing their features, performance, and comparisons with other products.
- Product Comparison Blogs: Blogs that specialize in boating gear often compile lists of the best portable battery jumpers, offering detailed comparisons and expert opinions on various models.
Consumer review websites are valuable as they conduct independent tests and provide an unbiased perspective on the best portable battery jumpers, ensuring you make informed decisions based on quality and performance metrics.
Online retailers like Amazon are particularly useful because they amass a large number of user reviews, which can highlight both the pros and cons of each battery jumper from a diverse user base. This crowd-sourced feedback can help you identify reliable products and avoid those with common issues.
Boating forums and communities offer a personal touch, as real boaters share their firsthand experiences and recommend products based on their own usage, giving you insights into the practicality of jumpers in various boating conditions.
YouTube reviews can visually demonstrate how a portable battery jumper operates in real-time and provide a more engaging way to assess its features and effectiveness, making it easier to understand what to expect from each product.
Product comparison blogs distill information from multiple sources and often feature expert analysis, which can help you weigh options and identify the best portable battery jumper for your specific needs and budget.
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