Having the best jump box on hand can be a lifesaver when your car battery decides to give up on you. Forget flagging down strangers or waiting for roadside assistance; a portable jump box gets you back on the road quickly and independently. We’ve rigorously tested a range of jump boxes to bring you our top recommendations, ensuring you find the perfect one for your needs.
Hulkman Alpha85S Jump Box – Best Overall
Hulkman Alpha85S jump box
77
OVERALL SCORE
- Power Performance 9.0
- Battery Storage 7.0
- Craftsmanship & Durability 7.0
- Ease of Use 8.0
- Versatility 6.0
REASONS TO BUY
Digital battery display
Impressive power output
Long battery life
Several accessories & adapters
REASONS TO AVOID
No case
Bulky for this style of device
Pricey
For those who demand top-tier performance and a comprehensive set of features in a sleek package, the HULKMAN Alpha85S jump box is our top pick. As our lead tester highlighted, “During our power assessment, this model delivered a higher voltage than any other jump box we tested.” Beyond raw power, the Alpha85S boasts exceptional battery longevity and rapid charging times. Its user-friendly design includes a clear digital display showing the precise battery percentage, a significant improvement over less informative LED meters. A built-in bright flashlight and a shape designed for easy storage under seats or in door panels add to its convenience. The Alpha85S is versatile in its charging options, accepting power via USB or a 12-volt car outlet with the included cord, and in turn, can charge USB and 12-volt devices itself.
SPECIFICATIONS
| Peak Amps | 2000 |
|---|---|
| Starting Amps | 500 |
| Watt Hours | 74 |
| Number of Jump Starts | 60 |
| Number of Cell Phone Charges | 20 |
Despite its premium features, the HULKMAN Alpha85S jump box surprisingly lacks a simple carrying pouch for its numerous cords and adapters. It’s also notably larger than other lithium-ion jump boxes of its kind. One tester noted, “While it’s much smaller than sealed lead acid models, other lithium-ion jump boxes are compact enough to fit in a center console or glove box.” The price point is also higher than many alternatives. However, for unmatched performance and cutting-edge technology, the Alpha85S is the ultimate jump box. For a more budget-friendly and compact alternative, consider the NOCO Boost Plus GB40. While it may not match the Alpha85S in power, the GB40 still provides reliable lithium-ion jump-starting capability, including a Boost mode for immediate vehicle starts, at half the cost.
HULKMAN Alpha85S Jump Box KitThe HULKMAN Alpha85S jump box offers our favorite kit in the lithium-ion category.
Credit: Ross Patton
GOOLOO GP2000 Jump Box – Best Bang for the Buck
GOOLOO GP2000 jump box
63
OVERALL SCORE
- 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 with lots of charge potential
High-rated peak amps (2000)
Seventy-three watt-hour battery
Options to power accessories via USB or 12V DC
REASONS TO AVOID
Struggles on bigger engines
Clunky carrying case
12V AC car adapter sold separately
If your priority is a versatile portable power bank with jump-starting as a secondary, occasional need, the GOOLOO GP2000 jump box is an impressive value. Its high-capacity lithium-ion battery and multiple charging ports make it a robust power source. This model features a 37Wh lithium-ion battery, claiming up to 2000 peak amps for jump-starting. One tester noted, “It wasn’t as powerful for boosting larger batteries on bigger trucks, but it had plenty of juice to handle eight consecutive boosts on a 2.5-liter engine before needing another charge.” The GP2000 truly shines as a power bank, excelling in charging electronics via its USB ports. In our tests, the 5V USB port charged an iPhone up to 15 times on a single charge. A USB-C port for input/output further enhances its charging versatility.
SPECIFICATIONS
| Peak Amps | 1,200 |
|---|---|
| Starting Amps | 500 |
| Watt Hours | 37 |
| Number of Jump Starts | 8 |
| Number of Cell Phone Charges | 3 |
While excellent for powering devices on the go, the GOOLOO GP2000 jump box is less impressive as a dedicated jump box. Our lead tester observed, “It’s capable of reviving mid-size batteries, but lacks the power for larger engines and higher cranking amps.” However, the 37Wh battery offers substantial charge retention, making it a reliable power source for your electronics. The GOOLOO GP2000 provides exceptional value by balancing accessory power and jump-starting capability at an unbeatable price point.
Measuring GOOLOO GP2000 Output Power
We used a multimeter to measure the output power of these jump boxes. The GOOLOO jump box can charge USB devices like a standard 5V 2A wall charger.
Credit: Rob Woodworth
NOCO Boost Plus GB40 Jump Box – Best Compact Model
NOCO Boost Plus GB40 jump box
67
OVERALL SCORE
- Power Performance 7.0
- Battery Storage 6.0
- Craftsmanship & Durability 8.0
- Ease of Use 6.0
- Versatility 5.0
REASONS TO BUY
Compact
Lightweight
Boost mode
IP65 waterproofing
REASONS TO AVOID
No wall plug
Not ideal for larger engines
So-so battery life
Limited capabilities
For drivers prioritizing minimal space and a jump box that doesn’t take up valuable room, the NOCO Boost Plus GB40 jump box is highly recommended. A team member remarked, “This powerful little device is tiny compared to much of the competition, yet it has proven to start every vehicle we’ve tested it with.” Unlike many jump boxes requiring a wait time, the GB40 features a ‘Boost Mode’ for a quick power surge, often enabling immediate vehicle starts. Its IP65 waterproof rating offers durability for those who are tough on their gear. One tester quipped, “While you can’t swim with it, a little rain or dust is no problem.“
SPECIFICATIONS
| Peak Amps | 1000 |
|---|---|
| Starting Amps | 500 |
| Watt Hours | 24 |
| Number of Jump Starts | 10 |
| Number of Cell Phone Charges | 4 |
In terms of versatility, the NOCO Boost Plus GB40 jump box is more limited. It jump-starts cars and charges USB devices, but that’s its extent. Charging is solely via USB cable, and a wall adapter is not included for indoor charging. With 1000 peak amps, it’s not the best choice for large engines. Our lead tester noted, “The smaller size means shorter battery life, so regular charging is essential.” Despite these limitations, the NOCO GB40’s compact size and overall performance are impressive. If budget allows, the Hulkman Alpha85S offers a more powerful battery and a wider range of accessories for those seeking a more robust portable jump box.
NOCO Boost Plus GB40 Compact Jump Box
If you want a reliable jump box in your vehicle that’s barely noticeable, the GB40 is the ideal choice.
Credit: Ross Patton
Dewalt DXAEJ14 Jump Box – Best for Home or Shop Use
Dewalt DXAEJ14 jump box
60
OVERALL SCORE
- Power Performance 7.0
- Battery Storage 5.0
- Craftsmanship & Durability 6.0
- Ease of Use 5.0
- Versatility 8.0
REASONS TO BUY
Very rugged and durable construction
Higher-than-average peak amps
120 PSI air compressor with digital settings
Can be charged via 12V DC or 120 AC
Features dual USB ports and a 12V 10A outlet
REASONS TO AVOID
Heavy and expensive
Limited storage for cables and accessories
Not capable of consecutive boosts
Low-watt-hour battery
For a comprehensive home or shop power solution, the Dewalt DXAEJ14 jump box goes beyond jump-starting. Our lead tester appreciated its versatility, saying, “Need to air up tires? Check your alternator? Charge your cell phone? The Dewalt is useful even beyond jump-starting.” The integrated 120 PSI air compressor with digital settings is a standout feature, allowing precise tire inflation. In addition to 1400 peak amps, it powers accessories via dual USB ports and a 12V DC charging port. While not as portable as lithium-ion models, its power allows it to jump-start larger engines and still have power for other tasks.
SPECIFICATIONS
| Peak Amps | 1,400 |
|---|---|
| Starting Amps | 700 |
| Watt Hours | 21 |
| Number of Jump Starts | 2 |
| Number of Cell Phone Charges | 4 |
Unlike lithium-ion models offering multiple jumps per charge, the Dewalt DXAEJ14 jump box, being a sealed lead-acid battery, requires recharging after each jump. Regular charging is crucial, with Dewalt recommending monthly top-offs. However, the Dewalt DXAEJ14 excels with its 21 amp-hour battery, surpassing other SLA models in capacity. One tester noted, “Its power, versatility, and robust build make it ideal for home and shop use.” For a more budget-conscious SLA jump box with similar features like a USB port and 120 psi air compressor, the Stanley J5C09 1000 Peak Amp is a viable alternative, offering versatility and adequate battery performance at a lower cost.
Dewalt DXAEJ14 Sealed-Acid Jump Box with Compressor
The Dewalt DXAEJ14 is our top pick for a sealed-acid battery jump box with a compressor.
Credit: Rob Woodworth
Compare Products
Compact Jump Boxes
Not all jump boxes are bulky. Many top models, like the NOCO Boost HD, are surprisingly compact.
Credit: Eric Bissell
How We Tested
We evaluated jump boxes ranging from 1000 to 2000 peak amps, acknowledging that higher output models are available from some brands. Our tests pushed each model to its performance limits, boosting batteries in vehicles from a 650cc motorcycle to a 6.7L V8 diesel and a 454 horsepower boat engine. We monitored voltage and current during boosts and assessed cold starts directly from each jump box when possible. Our comprehensive evaluation included both lithium-ion and sealed lead-acid battery types, applying the same metrics to each.
Our jump box testing used five rating metrics:
- Power Performance (30% of overall score weighting)
- Battery Storage (30% weighting)
- Craftsmanship & Durability (20% weighting)
- Ease of Use (15% weighting)
- Versatility (15% weighting)
Many models include integrated flashlights, a highly useful feature.
HULKMAN Alpha85S Powers Compressor
The HULKMAN Alpha85S jump box is powerful enough to run a 12-volt compressor.
Jump boxes are significantly easier to use than traditional jumper cables.
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At cardiagnosticnearme.com, our content is created by automotive experts dedicated to providing trustworthy and practical advice for car owners and automotive professionals alike. Our team includes experienced mechanics and automotive technicians with decades of hands-on experience in vehicle repair and diagnostics. We understand the critical importance of reliable tools and accessories, and our reviews are based on rigorous testing and real-world use.
Our lead tester for jump boxes is a seasoned auto repair specialist with extensive knowledge of vehicle electrical systems and battery technology. He has personally used and evaluated countless jump boxes in diverse automotive scenarios, from routine battery boosts to emergency roadside assistance. His expertise ensures our recommendations are accurate, unbiased, and truly helpful.
We are committed to delivering content that empowers our readers to make informed decisions about their automotive needs. Our comprehensive testing procedures and expert analysis mean you can rely on cardiagnosticnearme.com to guide you to the Best Jump Boxes and other essential automotive tools.
Thorough Jump Box ExaminationOur testers thoroughly examined each jump box, using voltmeters and load testers to measure USB charging port current.
Our testers went beyond basic use, subjecting each jump box to rigorous testing with professional-grade voltage meters and load testers.
Jump Box Adaptor Clip Comparison
We compare adaptor clips and other components for each jump box in our in-depth review.
How to Pick the Best Jump Box
A high-quality jump box is invaluable when facing a dead battery. While many options appear similar, our testing revealed crucial differences that distinguish excellent jump boxes from mediocre ones. Before diving into specifics, consider these key factors to guide your purchase.
Sealed Lead Acid vs. Lithium-Ion Jump Box Batteries
Both sealed lead-acid (SLA) and lithium-ion (LI) batteries offer advantages, catering to different needs. The primary difference is weight; SLAs are significantly heavier and larger than LIs. LI batteries generally provide more power per ounce and greater watt-hour energy storage. SLAs are affordable, durable, and dependable, but require proper maintenance. They need recharging after each jump, while LI jump boxes can provide multiple jumps on a single charge. SLA batteries also discharge over time, whereas LI packs hold power for longer.
Distinguishing them is simple: LI batteries are slim and modern, while SLA options are bulky and boxy. Our comparison chart specs highlight the weight difference – LI packs are typically under five pounds, and SLA packs exceed 15 pounds.
Jump Box Usage Frequency
Consider how often you anticipate needing a jump box, as models vary in power capacity. Manufacturers often list milliamp-hours (mAh) or amp-hours (Ah), but watt-hours are a more useful metric for comparing battery storage across voltages. Our tests focused on watt-hours to accurately reflect each jump box’s jump capacity before needing recharge. If frequent jump-starts are expected, prioritize models with higher watt-hour ratings. Our Battery Storage metric in the comparison chart and individual reviews details each jump box’s capacity.
Battery Size for Jump Box Boosting
While most users will jump-start standard passenger vehicles, some may need to boost larger engines. Jump box capability is often indicated by ‘peak amps,’ representing peak output current. This is a good starting point for comparing power, but actual performance under load may vary. Our Power Performance metric ranks each model based on its output capability, with higher-scoring products better suited for larger engines.
Jump Box Storage Location
Size and weight are key differentiators between SLA and LI jump boxes. LI batteries are lighter and more compact. However, consider where you’ll store your jump box. Some are designed for glove compartments, while others are built for rugged use in work trucks. Our Craftsmanship & Durability metric helps identify models built to withstand rough conditions. Waterproof ratings and cable length are also considered for boat use.
Durable NOCO Boost HD GB70 Jump Box
The NOCO Boost HD GB70 jump box prioritizes durability and reliability over extra features.
Credit: Eric Bissell
Analysis and Test Results
We conducted head-to-head testing of popular jump box models, including both sealed lead-acid and lithium-ion types, to comprehensively assess their capabilities. Beyond jump-starting performance, we evaluated features like USB power ports, AC adapters, and air compressors.
Best Value Jump Box
The ideal jump box budget depends on your vehicle and lifestyle. For compact trucks, SUVs, or smaller vehicles, and if you primarily need emergency jump-starting and phone charging, the NOCO Boost Plus GB40 jump box is an excellent, cost-effective choice. For frequent use and the need for 12-volt power and a compressor, the Dewalt DXAEJ14 jump box is recommended. While lacking a compressor, the HULKMAN Alpha85S jump box is a worthwhile investment for its exceptional performance and features, including 12-volt compressor compatibility. For an affordable and effective jump box, the GOOLOO GP2000 jump box is a top contender.
GOOLOO GP2000 Battery Performance Jump Box
The GOOLOO GP2000 jump box offers exceptional battery performance for charging electronics.
Credit: Rob Woodworth
Power Performance of Jump Boxes
This metric assessed each jump box’s energy output when boosting a 12V battery. Amperage, measured in ‘peak amps,’ indicates a unit’s potential current output. However, a 1000 peak amp jump box may not consistently deliver 1000 amps under varying loads. We tested each model in diverse boosting scenarios.
The HULKMAN Alpha85S jump box topped this category, exhibiting the highest amperage output and significantly higher voltage output in Force Start mode compared to competitors. It’s the top choice for immediate starts of larger engines.
HULKMAN Alpha85S Voltage Output
The HULKMAN Alpha85S jump box’s voltage output was unmatched in our testing.
Credit: Ross Patton
The NOCO Boost HD GB70 and NOCO Boost Plus GB40 jump boxes were top-rated lithium-ion units in power performance. With peak amp ratings exceeding 1000A, they effectively boosted engines up to seven liters. Lithium-ion jump boxes excel at delivering quick energy bursts rather than sustained current.
NOCO Boost HD GB70 Clamps
The NOCO Boost HD GB70 jump box clamps are large enough for bigger battery terminals.
Credit: Eric Bissell
Conversely, the Dewalt DXAEJ14, Clore Automotive JNC660, and Stanley J5C09 jump boxes deliver constant current when connected. These SLA models can provide three boosts on a full charge, though charging after each use is recommended due to faster discharge rates compared to lithium-ion batteries. However, they effectively revived larger diesel and deep-cycle marine batteries. Among SLA types, the Stanley J5C09 performed slightly lower under load in our tests.
NOCO Boost Plus GB40 Voltage Measurement
The NOCO Boost Plus GB40 jump box maintained approximately 12 volts during testing.
Credit: Ross Patton
Battery Storage of Jump Boxes
Battery storage evaluation considered manufacturer watt-hour claims, wattage usage during battery and engine charging, and runtime powering a 12-volt portable compressor.
The HULKMAN Alpha85S jump box excelled in battery storage, outlasting all competitors. For maximum battery longevity, it’s the top choice. The GOOLOO 2000 jump box also demonstrated commendable battery storage with an impressive 80Wh capacity.
HULKMAN Alpha85S Battery Longevity Test
The Alpha85S jump box outperformed competitors in our battery longevity test.
Credit: Ross Patton
The NOCO Boost HD GB70 jump box provided comparable or more jumps than competitors, despite a slightly lower 54Wh rating compared to other lithium-ion packs.
NOCO Booster Charging via Dewalt DXAEJ14
We partially charged the NOCO booster using the USB ports on the Dewalt DXAEJ14 jump box.
Credit: Rob Woodworth
For users needing only one or two emergency jumps per charge, the NOCO Boost Plus GB40 jump box is sufficient. While lacking the extended life of larger models and the amperage for large diesel trucks, it meets the needs of most users.
NOCO Boost Plus GB40 for Consumer Vehicles
The GB40 jump box is ideal for consumer vehicles, providing reliable jumps for personal use or helping others.
Credit: Ross Patton
SLA jump boxes like the Clore Automotive JNC660 have lower watt-hour ratings than LI models. Sealed batteries are designed for high current bursts over short periods, not sustained wattage draw. However, they can power 12V accessories for a few hours. The Dewalt DXAEJ14 and Stanley J5C09 jump boxes even include USB ports for mobile device charging.
GOOLOO 2000 Battery Performance for Electronics
While not the most powerful jumper, the GOOLOO 2000 jump box excels in battery performance for charging electronics.
Credit: Rob Woodworth
Craftsmanship & Durability of Jump Boxes
Our craftsmanship and durability assessment focused on build quality, waterproof ratings, switch and control durability, cable length, and overall device feel. Some jump boxes are designed for glove compartments, while others are built for rugged work environments.
The NOCO Boost HD GB70 jump box is a robust, no-compromise lithium-ion option. Its permanently attached cables ensure immediate readiness for jumps.
Lead-Acid vs Lithium-Ion Jump Box Packs
Lead-acid battery jump box packs are much larger than lithium-ion counterparts.
Credit: Eric Bissell
The NOCO Boost HD GB70 jump box features heavy-duty materials, thick cables, and secure port covers, reflecting meticulous attention to durability.
The HULKMAN Alpha85S jump box includes an emergency red flashlight setting, a valuable, though often overlooked, feature for critical situations.
HULKMAN Alpha85S Emergency Red Light
The Alpha852S jump box has a red flashing light for emergencies or even social gatherings.
Credit: Ross Patton
The Clore Automotive JNC660 jump box, while basic, is arguably the most durable SLA model, featuring welder-grade cables and a simple, robust design. The Dewalt and Stanley models have more components that could potentially fail and extra parts prone to loss if not properly stored. The GOOLOO 2000 jump box is reasonably well-built but uses thinner plastic and cables and has less robust port covers, giving it a less premium feel compared to more reputable brands.
Ease of Use of Jump Boxes
Ease of use ratings considered features enhancing user experience and deducted points for confusing or inefficient interfaces.
The HULKMAN Alpha85S jump box excelled in ease of use. Connecting the clamps, turning it on, and waiting for a clear green “READY” indicator is all it takes before starting the vehicle.
HULKMAN Alpha85S Ready Indicator
The HULKMAN Alpha85S jump box displays precise battery level and a “ready” indicator.
Credit: Ross Patton
The Clore Automotive JNC660 jump box was among the simplest to use: connect and jump. The NOCO Boost HD GB70 jump box is also straightforward but includes safety features that may require a slight learning curve.
Lithium-Ion Jump Box Carrying Cases
Carrying cases make lithium-ion jump boxes easier to store.
Credit: Rob Woodworth
The Dewalt DXAEJ14 jump box was less intuitive, requiring manual consultation for proper use, and lacked an auto-off feature, potentially leading to battery drain if not manually powered down.
Versatility of Jump Boxes
Versatility assessment considered jump-starting functionality and additional features. Models offering more everyday utility scored higher than single-function units.
The Dewalt DXAEJ14 jump box offers impressive versatility with a 120 PSI air compressor, pressure gauge, multiple power ports, work lights, and an alternator tester, making it ideal for home or job site use.
Dewalt DXAEJ14 Built-in Air Compressor
A built-in air compressor is highly useful for various wheeled equipment.
Credit: Rob Woodworth
For most users, models like the HULKMAN Alpha85S or NOCO Boost Plus GB40 jump boxes offer ample versatility, charging various devices and providing multiple recharging options. The least versatile was the Clore Automotive JNC660 jump box, lacking USB ports and only rechargeable via extension cord.
Jump Box Market Options
We identify the best overall performance jump boxes from the many options available. What type of jump box do you need?
Credit: Eric Bissell
Conclusion
We hope this review clarifies your search for the ideal jump box. In a crowded market, we aim to help you select a model that best suits your needs. A dead car battery can happen to anyone, and our testing ensures you can confidently choose a jump box to avoid being stranded on the road, in the wilderness, or wherever your adventures take you.
In many situations, getting a jump from another vehicle isn’t possible.
Jump Box Saves the Day
A jump box can truly be a lifesaver.
A jump box is an essential tool for those who venture off the beaten path.
