Being stranded with a dead car battery is a frustrating experience every driver dreads. Fortunately, the Best Battery Jump Starters offer a portable and reliable solution, eliminating the need for jumper cables and another vehicle. These devices have evolved significantly, offering impressive power and versatility in compact packages. We’ve rigorously tested a range of jump starters to help you choose the best one for your needs, whether you prioritize raw power, portability, or all-around value.
Hulkman Alpha85S: Best Overall Jump Starter
Hulkman Alpha85S jump starter
OVERALL SCORE: 77
- Power Performance: 9.0
- Battery Storage: 7.0
- Craftsmanship & Durability: 7.0
- Ease of Use: 8.0
- Versatility: 6.0
Reasons to Buy:
- Clear digital battery display for precise charge level
- Exceptional power output, outperforming competitors
- Extended battery life for multiple jump starts
- Includes a variety of useful accessories and adapters
Reasons to Avoid:
- Does not include a dedicated carrying case
- Larger and bulkier than some lithium-ion alternatives
- Higher price point compared to other jump starters
The HULKMAN Alpha85S stands out as the top overall pick for those seeking premium performance and a comprehensive feature set. Our in-depth power assessments revealed that the Alpha85S consistently delivered a higher voltage output than any other jump starter we evaluated. This superior power translates to more reliable jump starts, even for larger engines. Beyond its raw power, the battery life of the Alpha85S is notably impressive, lasting significantly longer than comparable models and recharging remarkably quickly.
The design of the Hulkman Alpha85S is both functional and aesthetically pleasing. The prominent digital display provides an exact battery percentage readout, eliminating the guesswork associated with less precise LED indicators. The integrated flashlight is bright and useful in low-light conditions, and the overall form factor allows for convenient storage under a car seat or in a door panel. The Alpha85S offers versatile charging options, accepting power via USB or a 12-volt car outlet with the included power cord. It can also function as a power bank, charging USB devices and 12-volt accessories.
SPECIFICATIONS:
| Feature | Specification |
|---|---|
| Peak Amps | 2000 |
| Starting Amps | 500 |
| Watt Hours | 74 |
| Number of Jump Starts | 60 |
| Cell Phone Charges | 20 |
Despite its numerous strengths, the HULKMAN Alpha85S has a couple of minor drawbacks. Notably, it lacks a dedicated carrying case or pouch, which would be helpful for organizing and storing the included cords and adapters. It is also larger than some other lithium-ion jump starters on the market, although still significantly smaller than traditional sealed lead-acid models. Finally, the Alpha85S is a more expensive option. However, for those prioritizing top-tier performance and advanced technology in a battery jump starter, the HULKMAN Alpha85S is an unmatched choice. For a more budget-friendly and compact alternative, consider the NOCO Boost Plus GB40. While it may not match the Alpha85S in sheer power, it still offers reliable lithium-ion jump-starting capabilities in a smaller package, featuring a convenient “Boost Mode” for immediate starts.
Hulkman Alpha85S jump starter kit
The HULKMAN Alpha85S provides a complete and high-quality lithium-ion battery jump starter kit.
Credit: Ross Patton
GOOLOO GP2000: Best Battery Jump Starter for the Buck
GOOLOO GP2000 jump starter
OVERALL SCORE: 63
- Power Performance: 6.0
- Battery Storage: 7.0
- Craftsmanship & Durability: 6.0
- Ease of Use: 6.0
- Versatility: 5.0
Reasons to Buy:
- High-capacity battery for extended power and charging
- Impressive 2000 peak amp rating for jump starting
- 73 watt-hour battery for multiple charges
- Versatile power options via USB and 12V DC ports
Reasons to Avoid:
- May struggle with jump starting larger engines effectively
- Includes a somewhat bulky and less refined carrying case
- 12V AC car adapter is sold separately
If your primary need is a versatile portable power bank with jump-starting capabilities as a secondary feature, the GOOLOO GP2000 is a compelling option. It boasts a high-capacity lithium-ion battery and a generous array of charging ports, making it an excellent choice for keeping your devices powered on the go. The GP2000 features a 37Wh lithium-ion battery, advertised to deliver up to 2000 peak amps for jump-starting vehicles. During testing, it demonstrated ample power for starting smaller to mid-size engines, successfully performing eight consecutive jump starts on a 2.5-liter engine before requiring a recharge.
The GOOLOO GP2000 truly shines as a portable power bank. Its USB ports proved highly effective for charging electronic devices. We were able to fully charge an iPhone up to 15 times using the 5V USB port on a single charge of the power pack. The inclusion of a USB-C port, supporting both input and output, further enhances its charging versatility.
SPECIFICATIONS:
| Feature | Specification |
|---|---|
| Peak Amps | 1,200 |
| Starting Amps | 500 |
| Watt Hours | 37 |
| Number of Jump Starts | 8 |
| Cell Phone Charges | 3 |
While the GOOLOO GP2000 excels as a power bank, its jump-starting performance is somewhat less impressive when dealing with larger engines. It is capable of jump-starting mid-size batteries effectively but may lack the necessary power for larger engines and higher cranking amp requirements. However, the substantial storage capacity of its 37Wh battery ensures that it will retain a charge for extended periods, making it a reliable power source for your electronics. The GOOLOO GP2000 offers a strong price-to-performance ratio, making it an attractive choice for users who prioritize battery capacity and charging versatility along with competent jump-starting capabilities for smaller vehicles.
GOOLOO GP2000 multimeter power output test
Testing the output power of the GOOLOO GP2000 jump starter with a multimeter, confirming its USB charging capabilities.
Credit: Rob Woodworth
NOCO Boost Plus GB40: Best Compact Battery Jump Starter
NOCO Boost Plus GB40 jump starter
OVERALL SCORE: 67
- Power Performance: 7.0
- Battery Storage: 6.0
- Craftsmanship & Durability: 8.0
- Ease of Use: 6.0
- Versatility: 5.0
Reasons to Buy:
- Exceptionally compact and portable design
- Lightweight and easy to store in tight spaces
- Features a “Boost Mode” for immediate jump starts
- IP65 waterproof rating for enhanced durability
Reasons to Avoid:
- Does not include a wall plug for charging
- Less powerful for jump starting larger engines
- Battery life is adequate but not exceptional
- Limited overall features beyond jump-starting and USB charging
For drivers with limited vehicle space or those who prefer a jump starter that is virtually unnoticeable until needed, the NOCO Boost Plus GB40 is an excellent choice. Its remarkably compact size belies its impressive jump-starting power. Despite its small footprint, the GB40 has proven capable of starting every vehicle we tested it with. Unlike many jump starters that require a waiting period for power to trickle charge the battery, the GB40’s “Boost Mode” delivers a rapid surge of power, often enabling immediate engine starts.
Durability is another key strength of the NOCO GB40. It boasts an IP65 waterproof rating, providing protection against water splashes and dust ingress. This robust construction makes it suitable for use in various weather conditions.
SPECIFICATIONS:
| Feature | Specification |
|---|---|
| Peak Amps | 1000 |
| Starting Amps | 500 |
| Watt Hours | 24 |
| Number of Jump Starts | 10 |
| Cell Phone Charges | 4 |
However, the NOCO Boost Plus GB40 is less versatile compared to some other models. Its functionality is primarily limited to jump-starting and charging USB devices. Charging the GB40 itself is only possible via a USB cable, and a wall adapter is not included for convenient indoor charging. With a peak amp rating of 1000A, it is not ideally suited for jump-starting larger engines. The smaller size also translates to a shorter battery life compared to larger jump starters. Therefore, regular charging is recommended to ensure it is ready when needed. Despite these limitations, the NOCO GB40 remains highly impressive for its performance-to-size ratio. For those seeking a highly portable and reliable jump starter for standard passenger vehicles, it is an outstanding option. If budget allows, considering the Hulkman Alpha85S might be worthwhile for its superior battery performance and included accessories.
NOCO Boost Plus GB40 compact jump starter
The NOCO Boost Plus GB40 is the ideal compact battery jump starter for peace of mind without taking up much space in your vehicle.
Credit: Ross Patton
Dewalt DXAEJ14: Best Battery Jump Starter for Home or Shop Use
Dewalt DXAEJ14 jump starter
OVERALL SCORE: 60
- Power Performance: 7.0
- Battery Storage: 5.0
- Craftsmanship & Durability: 6.0
- Ease of Use: 5.0
- Versatility: 8.0
Reasons to Buy:
- Robust and durable construction for demanding environments
- Higher peak amp rating for powerful jump starts
- Integrated 120 PSI air compressor with digital controls
- Versatile charging options: 12V DC and 120 AC
- Features dual USB ports and a 12V 10A outlet for powering accessories
Reasons to Avoid:
- Heavy and less portable than lithium-ion models
- Limited storage for cables and accessories
- Not designed for consecutive jump starts without recharging
- Lower watt-hour battery compared to some competitors
For a comprehensive, multi-functional power solution suited for home garages or professional shops, the Dewalt DXAEJ14 is a top contender. It goes beyond basic jump-starting, offering a range of features useful for vehicle maintenance and power needs. The integrated 120 PSI air compressor is a standout feature, equipped with a digital LCD screen for setting desired pressure and accurately inflating tires. In addition to delivering 1400 peak amps for jump-starting, it can also power various accessories via dual USB ports and a 12V DC charging port. While not as lightweight or portable as lithium-ion jump starters, the Dewalt DXAEJ14 is capable of jump-starting larger engines and provides sufficient power for charging devices or inflating tires afterward.
SPECIFICATIONS:
| Feature | Specification |
|---|---|
| Peak Amps | 1,400 |
| Starting Amps | 700 |
| Watt Hours | 21 |
| Number of Jump Starts | 2 |
| Cell Phone Charges | 4 |
One consideration with the Dewalt DXAEJ14 is that, being a sealed lead-acid (SLA) battery jump starter, it requires recharging after each jump start, unlike lithium-ion models that can handle multiple jumps on a single charge. Regular charging is also essential for SLA batteries, with Dewalt recommending monthly top-ups. However, the Dewalt DXAEJ14 compensates with a larger 21 amp-hour battery compared to other SLA models, offering robust power performance and versatility for home and shop environments. Its combination of jump-starting power, air compressor, and accessory power outlets makes it a valuable all-in-one power station. For a more budget-conscious SLA jump starter with similar features, the Stanley J5C09 1000 Peak Amp is a viable alternative.
Dewalt DXAEJ14 sealed-acid battery jump starter with compressor
The Dewalt DXAEJ14 is our top pick for a sealed lead-acid battery jump starter model that includes an integrated air compressor.
Credit: Rob Woodworth
Product Comparison
Compact lithium-ion jump starters
Modern battery jump starters like the NOCO Boost HD are compact and lightweight, unlike older, bulkier models.
Credit: Eric Bissell
How We Test Battery Jump Starters
Our rigorous testing process evaluates jump starters across a range of performance metrics. We test models capable of delivering 1000 to 2000 peak amps, representing a broad spectrum of available power. Jump starters are subjected to boosting various battery sizes in a diverse fleet of vehicles, from motorcycles to large V8 diesel engines and inboard boat engines. We meticulously monitor voltage and current during jump starts and assess the number of cold starts achievable on a single charge by bypassing the vehicle’s battery entirely. Our testing encompasses both lithium-ion and sealed lead-acid battery types, ensuring a comprehensive evaluation of each technology.
Our jump starter assessments are based on five key rating metrics:
- Power Performance (30% weighting): Evaluates the jump starter’s ability to deliver sufficient current and voltage for effective engine starting.
- Battery Storage (30% weighting): Measures the battery capacity, longevity, and the number of jump starts and device charges achievable per charge.
- Craftsmanship & Durability (20% weighting): Assesses the build quality, robustness, weather resistance, and overall durability of the jump starter.
- Ease of Use (15% weighting): Evaluates the intuitiveness of operation, clarity of indicators, and overall user-friendliness.
- Versatility (15% weighting): Considers additional features such as USB charging ports, air compressors, and other functionalities beyond basic jump-starting.
Many jump starter models include integrated flashlights, a valuable feature for roadside emergencies.
Hulkman Alpha85S powering a 12 volt compressor
The HULKMAN Alpha85S jump starter demonstrates its power by operating a 12-volt portable air compressor.
Jump starters are significantly easier and safer to use compared to traditional jumper cables.
Why Trust Our Battery Jump Starter Reviews
Our jump starter reviews are conducted with expertise and practical experience. Ross Patton, a veteran team member and lead tester, brings extensive knowledge of off-roading, overlanding, and battery-powered technologies. His background in Environmental Science and hands-on experience with diverse vehicles and equipment make him uniquely qualified to evaluate jump starter performance.
Rob Woodworth, another key tester, is a Coast Guard Certified Captain with deep understanding of 12V systems and battery maintenance. His experience maintaining marine deep-cycle batteries and working with off-grid solar power systems provides a robust foundation for assessing battery performance and reliability. The combined expertise of Ross and Rob ensures our jump starter reviews are thorough, in-depth, and based on real-world testing and practical knowledge.
Testers examining jump starter USB charging ports
Our testers conduct comprehensive examinations of each jump starter, including measuring the current output of USB charging ports using professional-grade voltmeters and load testers.
We go beyond simple product use, subjecting each jump starter to a rigorous series of tests using professional-grade electronic voltage meters and load testers.
Jump starter adaptor clip comparison
In-depth review includes comparing adaptor clips and other components of each battery jump starter model.
Choosing the Right Battery Jump Starter: Key Considerations
Investing in a high-quality battery jump starter is a wise decision for any driver. While numerous options appear similar at first glance, our detailed testing reveals crucial differences in performance and features. Before making a purchase, consider these key factors to guide your selection:
Sealed Lead Acid (SLA) vs. Lithium-Ion (LI) Batteries
The choice between sealed lead-acid (SLA) and lithium-ion (LI) battery jump starters depends on your priorities. The most significant difference is weight and size. SLA batteries are considerably heavier and bulkier than LI batteries. Lithium-ion batteries offer a higher power-to-weight ratio and greater energy density. SLA batteries are generally more affordable and have a long lifespan if properly maintained. However, they require recharging after each jump start, while LI jump starters can provide multiple jumps on a single charge. SLA batteries also tend to discharge over time, whereas LI batteries retain their charge for longer periods.
Visually, LI batteries resemble sleek, modern power banks, while SLA options are larger, more traditional-looking charging packs. Weight specifications also clearly differentiate them: LI packs typically weigh under five pounds, while SLA packs often exceed 15 pounds.
Frequency of Jump Starts
Consider how often you anticipate needing to use a jump starter. Battery capacity varies significantly among models. Manufacturers may list milliamp-hours (mAh) or amp-hours (Ah), but watt-hours (Wh) is a more useful metric for comparing battery storage potential across different voltages. We focus on watt-hours in our testing to accurately reflect the number of jump starts you can expect from each device before needing to recharge. If frequent jump starts are anticipated, prioritize models with higher watt-hour ratings.
Engine Size and Jump-Starting Needs
Engine size is a critical factor in jump starter selection. Jump starter capability is often rated by “peak amps,” indicating maximum current output. However, actual performance under load can vary. Our “Power Performance” metric evaluates each model’s real-world jump-starting capability, ranking higher-scoring products as better choices for larger engines.
Storage Space and Portability
Size and weight are key differentiators between SLA and LI jump starters. LI batteries offer lighter, more compact designs, ideal for glove compartment or center console storage. SLA jump starters are bulkier but may be more suitable for work trucks or shop environments. Consider the intended storage location and prioritize portability accordingly. Our “Craftsmanship & Durability” metric helps identify models designed for rugged use. Waterproof ratings and cable length are also relevant factors, especially for marine applications.
Durability-focused NOCO Boost HD GB70 jump starter
The NOCO Boost HD GB70 prioritizes durability and reliability over superfluous features in a battery jump starter.
Credit: Eric Bissell
Analysis and Test Results: Finding the Best Value
Our hands-on testing of popular jump starter models provides valuable insights into their real-world performance. We evaluated both sealed lead-acid and lithium-ion models to comprehensively understand their respective strengths and weaknesses. Beyond jump-starting capability, we assessed features like USB power ports, AC adapters, and air compressors.
Best Value Recommendations
The ideal jump starter for you depends on your vehicle and lifestyle. For compact cars and SUVs, or for users primarily seeking emergency jump-starting and phone charging, the NOCO Boost Plus GB40 offers excellent value and performance without unnecessary features. For users needing a more versatile device with 12-volt power capabilities and an air compressor, the Dewalt DXAEJ14 is a strong contender. However, for the ultimate combination of high performance and features, including the ability to power 12-volt compressors, the HULKMAN Alpha85S is a worthwhile investment. If affordability is paramount, the GOOLOO GP2000 delivers solid jump-starting performance and exceptional battery capacity for its price.
GOOLOO GP2000 battery performance for electronics charging
The GOOLOO GP2000 jump starter provides exceptional battery performance, making it highly useful for charging electronic devices.
Credit: Rob Woodworth
Power Performance Analysis
Our power performance testing focused on evaluating each jump starter’s energy output when boosting a 12V battery. Peak amp ratings provide a general indication of power, but real-world performance under load is crucial. We tested each model in various jump-starting scenarios to assess their capabilities.
The HULKMAN Alpha85S consistently delivered the highest maximum amperage output and significantly higher voltage output in Force Start mode compared to competitors. For jump-starting larger engines quickly and reliably, it is the top performer.
Hulkman Alpha85S unmatched voltage output
During testing, the HULKMAN Alpha85S demonstrated unmatched voltage output, highlighting its superior power performance.
Credit: Ross Patton
The NOCO Boost HD GB70 and NOCO Boost Plus GB40 were top-rated lithium-ion models in power performance. With peak amp ratings exceeding 1000A, they provided ample current for starting engines up to seven liters. Lithium-ion jump starters excel at delivering quick bursts of energy, ideal for jump-starting.
NOCO Boost HD GB70 clamps on battery terminals
The NOCO Boost HD GB70 features large clamps that securely fit onto larger battery terminals for reliable connection.
Credit: Eric Bissell
In contrast, SLA jump starters like the Dewalt DXAEJ14, Clore Automotive JNC660, and Stanley J5C09 deliver a more constant current when connected to battery terminals. While manufacturers recommend recharging after each use, these models can typically provide up to three jump starts on a full charge. SLA batteries discharge more rapidly than lithium-ion batteries but are still capable of jump-starting larger diesel and deep-cycle marine batteries. Among SLA models, the Stanley J5C09 exhibited slightly lower current output under load in our tests.
NOCO Boost Plus GB40 voltage output during testing
The NOCO Boost Plus GB40 maintained a consistent voltage output during our power performance assessment.
Credit: Ross Patton
Battery Storage Performance
Our battery storage evaluation considered watt-hour ratings, wattage consumption during charging and jump-starting, and battery longevity under load using a 12-volt portable compressor.
The HULKMAN Alpha85S demonstrated superior battery storage, outlasting all competitors in our tests. For users prioritizing extended battery life, it is the clear leader. The GOOLOO 2000 also exhibited commendable battery storage with an impressive 80Wh capacity.
Hulkman Alpha85S battery longevity test
During battery longevity testing, the Alpha85S jump starter significantly outperformed the competition in terms of runtime.
Credit: Ross Patton
The NOCO Boost HD GB70 provided comparable or even more jump starts than competitors, despite a slightly lower 54Wh rating compared to some other lithium-ion packs.
NOCO Booster charging via Dewalt DXAEJ14 USB ports
We tested the ability to partially charge the NOCO Boost jump starter using the USB power ports on the Dewalt DXAEJ14.
Credit: Rob Woodworth
For users needing only one or two emergency jump starts per charge, the NOCO Boost Plus GB40 is a suitable option. While not offering the extended battery life of larger models, it provides sufficient capacity for typical passenger vehicle needs.
NOCO Boost Plus GB40 for consumer vehicles
The GB40 is an ideal battery jump starter for owners of consumer vehicles seeking reliable emergency jump-starting capability.
Credit: Ross Patton
SLA jump starters like the Clore Automotive JNC660 have lower watt-hour ratings than LI models. SLA batteries are designed for high current bursts for short durations rather than prolonged wattage draw. However, they offer enough capacity to power 12V accessories for a few hours. The Dewalt DXAEJ14 and Stanley J5C09 even include USB ports for charging mobile devices.
GOOLOO 2000 battery performance for electronics
The GOOLOO 2000 jump starter excels in battery performance for charging electronics, making it a versatile portable power source.
Credit: Rob Woodworth
Craftsmanship & Durability Assessment
Our craftsmanship and durability evaluation examined the build quality, materials, and robustness of each jump starter. We considered waterproof ratings, switch and control durability, cable length, and the overall feel of each device.
The NOCO Boost HD GB70 stands out as a robust and rugged lithium-ion jump starter. Its permanently attached cables, heavy-gauge wiring, and secure port covers emphasize durability and reliability.
Lead-acid vs lithium-ion battery packs
Lead-acid battery jump starter packs are significantly larger and heavier compared to their lithium-ion counterparts.
Credit: Eric Bissell
The NOCO Boost HD GB70 is constructed with hard-wearing materials, heavy gauge cables, and extremely secure port covers, demonstrating a clear focus on durability.
The HULKMAN Alpha85S incorporates a useful emergency red flashlight mode, a rarely seen but potentially life-saving feature in emergency situations.
Hulkman Alpha85S emergency red flashlight
The Alpha85S jump starter includes a red flashing light mode for emergency signaling or hazard awareness.
Credit: Ross Patton
The Clore Automotive JNC660, while not the most feature-rich, is arguably the most durable SLA jump starter, featuring heavy-duty welder-grade cables and a simple, robust design. The Dewalt and Stanley models have more working components that could potentially fail and smaller parts that may be easily lost if not properly stored. The GOOLOO 2000 is reasonably well-built but uses thinner plastic and cables and lacks robust port covers, giving a less premium impression compared to more reputable brands.
Ease of Use Evaluation
Our ease-of-use assessment prioritized user-friendly features and intuitive operation. Points were awarded for features enhancing user experience, while confusing or inefficient interfaces detracted from the score.
The HULKMAN Alpha85S excelled in ease of use. Its straightforward operation involves simply connecting the clamps, turning it on, and waiting for a clear “READY” indicator before starting the vehicle.
Hulkman Alpha85S battery level display and ready indicator
The HULKMAN Alpha85S features a clear digital battery level display and a “ready” indicator for simplified jump-starting.
Credit: Ross Patton
The Clore Automotive JNC660 also proved to be exceptionally simple and easy to use. Connecting to the battery terminals is virtually all that’s required for operation. The NOCO Boost HD GB70 is generally straightforward but incorporates safety features that may require a brief learning curve for first-time users.
Jump starter carrying cases for portability
Carrying cases included with lithium-ion jump starters enhance portability and convenient storage for future use.
Credit: Rob Woodworth
The Dewalt DXAEJ14 was less intuitive, requiring reference to the user manual for proper operation. It also lacks an auto-off feature, potentially leading to battery drain if not manually powered down.
Versatility Assessment
Versatility evaluates features beyond basic jump-starting. Models offering a wider range of functionalities for everyday use scored higher in this metric.
The Dewalt DXAEJ14 offers impressive versatility, including a 120 PSI air compressor with pressure gauge, multiple power ports, work lights, and an alternator tester, making it ideal for home or job site power needs.
Dewalt DXAEJ14 integrated air compressor
The integrated air compressor on the Dewalt DXAEJ14 is a highly convenient feature for inflating tires and other inflatables.
Credit: Rob Woodworth
For most users, models like the HULKMAN Alpha85S or NOCO Boost Plus GB40 offer ample versatility, providing USB device charging and multiple recharging options in addition to jump-starting. The least versatile model in our test was the Clore Automotive JNC660, lacking USB ports and offering only extension cord charging.
Variety of battery jump starter options
With numerous battery jump starter options available, our testing helps identify the best overall performance and features for your needs.
Credit: Eric Bissell
Conclusion: Choosing the Best Battery Jump Starter for Your Needs
We hope this comprehensive review has illuminated your search for the perfect battery jump starter. In a market saturated with options, we aim to provide clarity and help you select a model that best suits your individual needs. A dead car battery can happen to anyone, and a reliable jump starter ensures you’re never stranded without power, whether on the roadside or exploring remote locations.
In many situations, relying on another vehicle for a jump start is simply not feasible.
Jump starter for roadside emergencies
Having a portable battery jump starter readily available can be a lifesaver in unexpected roadside emergencies.
A battery jump starter is an invaluable tool for anyone, especially those who frequently venture off the beaten path.
