Best Portable Jump Starters in 2026: 10 Models Compared
What are the best portable jump starters?
The best portable jump starter depends on your vehicle’s engine size, how much portability you want and whether you need features such as USB-C charging or a built-in tire inflator. The NOCO Boost GB40 is a compact option for many everyday vehicles, while the NOCO GB70 and GBX75 provide higher manufacturer-rated engine compatibility. The GOOLOO GT4000S targets larger engines and high-output charging, while the GOOLOO A3 and AstroAI S8 Air combine jump starting with tire inflation. Before buying, check the manufacturer’s gasoline and diesel engine rating for your vehicle, then compare safety features, charging speed, size, storage requirements and secondary functions.
Important Note About Our Methodology
GrowthVista has not physically tested all ten products in this comparison. Our analysis is based primarily on current manufacturer specifications, product documentation, intended use and feature comparisons. Manufacturer-reported engine-size, peak-current, charging and performance figures are treated as manufacturer claims rather than independent GrowthVista test results.
Where products are described as being “best suited” for a particular use case, that assessment reflects the published specifications and features discussed in this guide. Product specifications, model revisions, regional configurations and availability can change, so verify the manufacturer’s current information before purchasing.
Quick Picks
Everyday car: NOCO Boost GB40
More powerful NOCO option: NOCO Boost GB70
Fast USB-C charging: NOCO Boost X GBX45
Large engines: NOCO Boost X GBX75
High-output/value option: GOOLOO GT4000S
Cold-weather-focused option: HULKMAN Alpha 85S
Budget-oriented option: AstroAI S8
Jump starter + tire inflator: GOOLOO A3
Alternative jump starter + inflator: AstroAI S8 Air
Traditional professional jump box: Clore Jump-N-Carry JNC660
Portable Jump Starter Comparison
| Model | Claimed Peak Current | Manufacturer Engine Rating | Standout Feature | Best Fit |
|---|---|---|---|---|
| NOCO GB40 | 1,000A | 6.0L gas / 3.0L diesel | Compact, IP65 | Everyday cars |
| NOCO GB70 | 2,000A | 8.0L gas / 6.0L diesel | More starting capacity | SUVs / trucks |
| NOCO GBX45 | 1,250A | 6.5L gas / 4.0L diesel | 60W USB-C | Daily driver + fast charging |
| NOCO GBX75 | 2,500A | 8.5L gas / 6.5L diesel | 60W USB-C + large engines | Trucks / larger engines |
| GOOLOO GT4000S | 4,000A | Up to 12L gas / 10L diesel* | 100W bidirectional USB-C | High-output/value |
| HULKMAN Alpha 85S | 2,000A | 8.5L gas / 6.0L diesel | Cold-weather focus | Winter driving |
| AstroAI S8 | 1,500A | 6.0L gas / 3.0L diesel | Compact/budget-oriented | Smaller vehicles |
| GOOLOO A3 | 3,000A | 9.0L gas / 6.5L diesel* | Built-in air compressor | All-in-one roadside kit |
| AstroAI S8 Air | 3,000A | 6.0L gas / 3.0L diesel | 150 PSI inflator | Roadside versatility |
| Clore JNC660 | 1,700A peak | Not marketed by liter rating | Heavy-duty cables | Garage/pro use |
*Manufacturer ratings can differ between model revisions/market listings, so verify the current listing for your exact unit before ordering.
The specifications above come primarily from current manufacturer documentation. For example, NOCO currently rates the GB40 at 1,000A for engines up to 6.0L gas/3.0L diesel, while the GB70 moves to 2,000A and up to 8.0L gas/6.0L diesel.
1. NOCO Boost GB40
Best suited to: Everyday cars
The NOCO Boost GB40 is one of the easiest places to begin if you’re buying a portable jump starter primarily for a normal passenger vehicle.
NOCO rates the GB40 at 1,000 peak amps, supporting gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters. It uses a 24Wh lithium-ion internal battery and weighs approximately 2.45 lb.
It also carries an IP65 enclosure rating, includes reverse-polarity protection and spark-proof connection technology, and incorporates a 100-lumen flashlight. NOCO says it can provide up to 20 jump starts under its stated conditions.
Pros
Compact compared with traditional jump boxes
6.0L gasoline engine rating
Spark-proof connection system
Reverse-polarity protection
IP65 enclosure rating
Built-in flashlight
USB device charging
Consider Before Buying
3.0L diesel rating is lower than larger models
Slower USB charging architecture than newer Boost X models
Drivers with large trucks may want more capacity
Who Should Consider It?
Drivers of typical gasoline-powered cars, crossovers and smaller SUVs who prioritize portability over maximum starting capacity.
2. NOCO Boost GB70
Best for: SUVs, pickups and larger engines
Think of the GB70 as the bigger sibling to the GB40.
NOCO rates it at 2,000 peak amps, with support for gasoline engines up to 8.0L and diesel engines up to 6.0L. Its internal lithium-ion battery is rated at 56Wh.
It also gets a considerably brighter 400-lumen flashlight. The trade-off is size and weight: the GB70 weighs about 4.18 lb according to NOCO’s current specifications, compared with 2.45 lb for the GB40.
Pros
2,000A peak rating
Up to 8.0L gasoline engines
Up to 6.0L diesel engines
400-lumen flashlight
IP65 rating
12V accessory output
Consider Before Buying
Larger and heavier than GB40
More capacity than many compact-car owners need
Older charging system than Boost X series
Who Should Consider It?
Choose the GB40 when compact storage and ordinary passenger vehicles are the priority. Move toward the GB70 when you have a larger gasoline engine, diesel vehicle, pickup, boat or RV—or simply want more manufacturer-rated starting capacity.
3. NOCO Boost X GBX45
Best for: Compact power with modern USB-C charging
The GBX45 is where NOCO’s newer Boost X family becomes interesting.
It carries a 1,250A peak rating, with manufacturer support for gasoline engines up to 6.5L and diesel engines up to 4.0L.
More importantly for some buyers, it adds USB-C Power Delivery. NOCO says a compatible 60W charger can completely recharge the GBX45 in approximately 48 minutes and that a five-minute charge from empty can provide enough energy for a jump-start attempt.
Pros
1,250A rating
6.5L gas / 4.0L diesel
USB-C Power Delivery
Fast recharge capability
IP65 with ports closed
Relatively compact
Consider Before Buying
The extra charging functionality may not matter if your jump starter simply stays charged in an emergency kit.
Who Should Consider It?
Drivers who want a compact jump starter with a much more modern charging system.
4. NOCO Boost X GBX75
Best for: Large engines plus USB-C power
The GBX75 substantially increases capacity.
NOCO specifies 2,500 peak amps, with compatibility up to 8.5L gasoline and 6.5L diesel engines. Its internal battery is 74Wh and the unit weighs about 3.77 lb.
It also provides up to 60W USB-C input/output, allowing it to function as a much more capable USB-C power source than older jump starters.
Pros
2,500A rating
Strong engine-size rating
60W USB-C input/output
400-lumen flashlight
IP65 with ports closed
Fast-charge functionality
Consider Before Buying
This is a higher-capacity unit than many ordinary sedan owners require.
Who Should Consider It?
Drivers with larger engines who also value modern USB-C charging.
5. GOOLOO GT4000S
Best for: High claimed output and fast device charging
The GT4000S takes a noticeably different approach.
GOOLOO currently advertises 4,000A peak output and compatibility up to 12.0L gasoline and 10.0L diesel engines on its U.S. product page. It also incorporates a 3.2-inch status display and multiple protection mechanisms.
Its other standout feature is 100W bidirectional USB-C charging. GOOLOO says the unit can fully recharge in around 1.2 hours with appropriate charging hardware and can also provide high-power USB-C output for devices such as laptops.
Pros
4,000A manufacturer peak rating
High claimed engine compatibility
100W USB-C
Display
400-lumen light
Multiple safety protections
Consider Before Buying
Don’t select it purely because 4,000A is larger than 2,500A. Peak-amp numbers across brands don’t necessarily provide an apples-to-apples measure of real-world starting performance.
Who Should Consider It?
If you want your jump starter to double as a serious portable power bank, the GT4000S’s charging architecture is compelling on paper.
6. HULKMAN Alpha 85S
Best for: Cold-weather-focused drivers
Cold conditions are particularly challenging for batteries, making winter performance an important consideration.
HULKMAN rates the Alpha 85S at 2,000 peak amps, with a 20,000mAh/74Wh battery and support for gasoline engines up to 8.5L and diesel engines up to 6.0L.
The company specifies an operating-temperature range down to -40°F and markets the 85S around its preheating technology.
Pros
2,000A rating
8.5L gas / 6.0L diesel
20,000mAh stated capacity
Cold-weather-oriented design
USB-A and USB-C
Display
Consider Before Buying
Extremely low-temperature capability is unnecessary for many climates, so don’t pay extra for winter-focused features you don’t need.
Who Should Consider It?
Drivers who regularly face very cold winter conditions.
7. AstroAI S8
Best for: Budget-conscious everyday drivers
Not everyone needs a high-capacity jump starter.
AstroAI’s S8 provides a more basic alternative. The current model is rated at 1,500A, supporting gasoline engines up to 6.0L and diesel engines up to 3.0L.
AstroAI lists the unit at approximately 0.95 lb, making portability one of its obvious attractions.
Pros
Compact
Lightweight
1,500A claimed peak current
6.0L gas / 3.0L diesel rating
Built-in flashlight
Multiple safety features
Consider Before Buying
This is better matched to ordinary passenger vehicles than very large engines.
Who Should Consider It?
Budget-conscious drivers with ordinary passenger vehicles.
8. GOOLOO A3
Best for: Jump starter + tire inflator
A dead battery isn’t the only roadside problem drivers encounter. A low or flat tire is another.
The GOOLOO A3 combines a 3,000A jump starter with a built-in air compressor. GOOLOO currently lists compatibility up to 9L gas / 6.5L diesel for the A3.
This makes the A3 particularly attractive for drivers trying to reduce the number of individual emergency devices carried in the vehicle.
Pros
Jump starter
Integrated tire inflator
High manufacturer-rated peak output
Suitable for a broad range of vehicles
Consolidates two roadside tools
Consider Before Buying
Combination devices are convenient, but buyers who already own a good tire inflator may prefer a dedicated jump starter.
Who Should Consider It?
Drivers who want one roadside device for battery and tire-pressure emergencies.
9. AstroAI S8 Air
Best for: Affordable all-in-one roadside functionality
AstroAI takes a similar approach with the S8 Air.
The current S8 Air is specified at 3,000A and incorporates a 150 PSI tire inflator. AstroAI lists engine compatibility up to 6.0L gas / 3.0L diesel.
The built-in inflator includes automatic shutoff functionality, making the unit useful beyond battery emergencies.
Pros
3,000A claimed rating
Integrated 150 PSI inflator
Auto-shutoff inflation
Emergency light
One device for two common roadside problems
Consider Before Buying
Its manufacturer-rated engine compatibility is more modest than the peak-amp figure might initially suggest—another example of why we don’t recommend buying based on peak amps alone.
Who Should Consider It?
Drivers looking for an affordable combination of jump starting and tire inflation.
10. Clore Jump-N-Carry JNC660
Best for: Garage and professional-style use
The JNC660 is fundamentally different from the compact lithium packs above. It is a traditional, substantially larger jump box.
Clore specifies 1,700 peak amps and 425 cranking amps, along with 46-inch #2 AWG cable leads, industrial-grade clamps and an integrated automatic charger.
It also weighs about 18 pounds, putting it in an entirely different portability category from devices such as the NOCO GB40.
Pros
Heavy-duty cables
Industrial clamps
425 cranking amps
Built-in charger
Long-established professional-style format
Consider Before Buying
Approximately 18 lb
Much larger than lithium alternatives
Not the obvious choice for a small glovebox emergency kit
Who Should Consider It?
Mechanics, fleet operators and garage users who prioritize heavy-duty hardware over compact storage.
Which Jump Starter Should You Buy?
If you want a compact jump starter for a typical passenger car, start with the NOCO GB40 or AstroAI S8. For larger gasoline engines and SUVs, consider the NOCO GB70. If modern USB-C charging is important, the NOCO GBX45 is a compact option, while the GBX75 provides higher manufacturer-rated engine compatibility. For a high-output model, consider the GOOLOO GT4000S. If cold-weather operation is a major concern, the HULKMAN Alpha 85S is worth evaluating. For a combined jump starter and tire inflator, compare the GOOLOO A3 and AstroAI S8 Air. For garage or professional-style use, the Clore JNC660 is a substantially larger traditional jump box.
Always verify the exact engine rating and current specifications for the model you are buying.
Instead of declaring one product universally best, match it to your vehicle and use case.
| Your Situation | Start Your Research With |
|---|---|
| Normal gasoline car | NOCO GB40 / AstroAI S8 |
| SUV or larger engine | NOCO GB70 |
| Want modern USB-C charging | NOCO GBX45 |
| Large truck / diesel | NOCO GBX75 / GOOLOO GT4000S |
| Very cold climate | HULKMAN Alpha 85S |
| Want tire inflator too | GOOLOO A3 / AstroAI S8 Air |
| Garage / professional use | Clore JNC660 |
This isn’t a ranking from best to worst. The appropriate capacity depends on the vehicle you’re trying to start.
What Is the Best Jump Starter With an Air Compressor?
A jump starter with an air compressor can be useful if you want one roadside device for two common problems: a weak battery and a low tire. The GOOLOO A3 combines a jump starter with a built-in tire inflator, while the AstroAI S8 Air adds a 150 PSI inflator to its jump-starting system.
These combination devices are most useful for drivers who want to reduce the number of emergency tools carried in the vehicle. If you already own a reliable tire inflator, however, a dedicated jump starter may be smaller and simpler.
When comparing these products, check both the jump-starting specifications and the inflator’s maximum pressure, inflation speed, hose design, automatic shutoff and battery capacity.
How to Choose a Portable Jump Starter
1. Start With Your Engine
Check your vehicle’s engine displacement before buying. If your car has a 2.0L gasoline engine, buying a product designed around huge diesel engines may add unnecessary size and cost. Conversely, don’t undersize the jump starter for a large diesel truck. Manufacturer engine ratings are therefore one of the easiest specifications to use when creating your shortlist.
2. How Many Amps Do You Need in a Jump Starter?
The number of amps you need depends more on your vehicle and the manufacturer’s engine rating than on the largest peak-amp number you can find. A compact 1,000A jump starter can be sufficient for many passenger vehicles, while larger gasoline engines and diesel vehicles may require a model with a higher manufacturer-rated engine capacity. Peak amps are useful for comparing products, but they should not be treated as a universal measurement of real-world starting performance because manufacturers may specify and present the figure differently.
3. Look for Reverse-Polarity Protection
Connecting battery clamps backward is an obvious user error. For ordinary consumers, clear connection indicators, reverse-polarity protection and spark-reduction technologies are valuable safety features. Never assume that protective electronics make incorrect use harmless, though. Follow the product manual.
4. Consider Recharge Speed
A jump starter is designed for emergency starting, while a car battery charger or maintainer is intended for charging or maintaining the vehicle battery over a longer period. USB-C Power Delivery has made newer models particularly interesting. Some current units support high-power USB-C input/output, making them more useful as rechargeable emergency devices.
5. Think About Where You’ll Store It
A compact lithium jump starter can live in an emergency bag relatively easily. But lithium batteries also have specified storage-temperature ranges. Always follow the storage guidance for your specific unit.
How to Use a Portable Jump Starter Safely
Always follow the instructions supplied with your specific jump starter and vehicle.
The general process typically involves switching the vehicle off, identifying the battery terminals, connecting the clamps according to the manufacturer’s instructions, confirming the connection status, activating the jump function if required, and attempting to start the vehicle.
However, products differ. Some devices also include manual override/force-start modes intended for batteries with extremely low voltage. These modes deserve particular caution because they can bypass normal safety detection.
Don’t use an override mode simply because a normal jump attempt failed. Read the manufacturer’s instructions first.
Frequently Asked Questions
How powerful a jump starter do I need?
Start with the engine-size rating published by the jump starter manufacturer rather than choosing purely by the advertised peak-amp figure. Give yourself appropriate capacity for your actual gasoline or diesel engine.
Is 1,000 amps enough to jump-start a car?
It can be for many vehicles. For example, NOCO currently rates its 1,000A GB40 for gasoline engines up to 6.0L and diesel engines up to 3.0L. That does not mean every 1,000A product has identical capability.
Can a portable jump starter charge my phone?
Many can. USB outputs are common, while newer models increasingly offer higher-power USB-C.
Are jump starters with air compressors worth buying?
They can be if you want one device for both battery and tire-pressure emergencies. If you already carry a high-quality tire inflator, a dedicated jump starter may make more sense.
How often should I charge my jump starter?
Follow the manufacturer’s instructions for your particular model. Self-discharge, temperature and battery chemistry affect storage life, so don’t assume a device left untouched in a vehicle for years will be ready when needed.
Can I keep a lithium jump starter in my car?
Check its specified storage-temperature range. Vehicle interiors can become extremely hot, and lithium batteries should not be stored outside the manufacturer’s limits.
What is the best portable jump starter for most cars?
For many everyday passenger vehicles, a compact model such as the NOCO GB40 can be a practical starting point because of its portability and manufacturer-rated engine compatibility. The right choice still depends on the vehicle’s gasoline or diesel engine size and the manufacturer’s current specifications.
What is the best jump starter for a truck?
The best jump starter for a truck depends on the truck’s engine size and whether it uses gasoline or diesel. Larger models such as the NOCO GB70, NOCO GBX75 and GOOLOO GT4000S provide higher manufacturer-rated engine compatibility, but buyers should verify the exact rating for their vehicle before purchasing.
What is the best jump starter with an air compressor?
A jump starter with an air compressor can be useful when you want one device for both battery emergencies and tire inflation. The GOOLOO A3 and AstroAI S8 Air are examples in this comparison. Compare both their jump-starting specifications and their inflator capabilities before choosing.
Is a 1,000-amp jump starter enough?
It can be sufficient for many passenger vehicles, but the amp number alone does not determine compatibility. Check the manufacturer’s gasoline and diesel engine rating for the specific jump starter and compare it with your vehicle’s engine.
Are higher-amp jump starters better?
Not necessarily. A higher advertised peak-amp figure does not automatically mean better real-world starting performance. Engine compatibility, battery condition, temperature, safety systems, cable and clamp design and manufacturer specifications also matter.
How long do portable jump starters hold a charge?
Charge retention varies by model, battery chemistry, storage conditions and manufacturer specifications. Follow the manufacturer’s recommended storage and charging schedule rather than assuming a jump starter will remain fully charged indefinitely.
Can a jump starter start a completely dead battery?
Some jump starters include an override or manual mode for batteries whose voltage is too low for normal detection. However, these modes can bypass standard safety detection, so they should only be used according to the manufacturer’s instructions.
Can a jump starter damage a car battery?
Using a compatible jump starter according to the manufacturer’s instructions should reduce the risk of improper connection or operation. Reverse-polarity protection and clear connection indicators can provide additional safeguards, but they do not make incorrect use risk-free.
Final Thoughts on the Best Portable Jump Starters
The best portable jump starter isn’t necessarily the model with the biggest number printed on its case.
For many everyday drivers, something compact such as the NOCO GB40 or AstroAI S8 may provide the appropriate engine compatibility without taking up much space.
Drivers with larger engines can investigate models such as the NOCO GB70, GBX75 or GOOLOO GT4000S, while buyers who want a second roadside function may find a jump-starter/inflator combination more useful.
And professional users may still prefer a traditional heavy-duty jump box such as the JNC660 rather than a tiny lithium pack.
Start with your vehicle’s engine, then compare safety features, physical size, charging system, temperature requirements and secondary functions. That’s a much more useful way to choose than simply buying whichever listing advertises the highest peak amps.
