Battery Jump Starters
Best Battery Jump Starters
7 picks compared
10 min read
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The short answerFor most drivers the NOCO Boost GB40 is the jump starter we would pick first: 1000 peak amps covers the majority of small and mid-size gas engines, it is small enough to keep in the car, and its spark-proof, reverse-polarity-protected clamps make it forgiving to use. Step up to the NOCO GB70 or GBX155 for V8s, large SUVs, and diesels, choose the GOOLOO A3 or WOLFBOX MV24 when you want a built-in air compressor or display, and consider the AstroAI S8 as an affordable backup. Whatever you choose, match the amp reserve to your engine and always follow the manual and correct clamp order.
?How we pickedWe compare published specifications, safety certifications and thousands of verified owner reviews, and we do not physically test every unit. Read the full process in our review methodology.
NOCO Boost GB40 12V 1000A UltraSafe Portable Lithium Jump Starter
★★★★★ 4.6 / 5 Editor's pick
The GB40 is the pick we would hand most drivers first: 1000 peak amps is enough to crank the four and six cylinder gas engines that fill most driveways, and it stays small enough to live in a glovebox.,Spark-proof clamps and reverse-polarity protection make it forgiving if you are nervous about clamp order, which is why it is our starting point rather than the biggest number on the list.
- Compact and light enough to keep in the car
- Forgiving safety features for first-time users
- Doubles as a phone power bank and worklight
- 1000 amps is light for large trucks or diesels
- No air compressor or display
Best for: Everyday drivers with small to mid-size gas cars who want a safe, pocketable safety net.
NOCO Boost GB70 2000A UltraSafe Jump Starter, 12V Lithium Battery Booster
★★★★★ 4.5 / 5 Big engine pick
The GB70 keeps the GB40's safety approach but doubles the muscle to 2000 peak amps, which is the jump we would make for a V8, a large SUV, or a smaller diesel.,It is noticeably heavier and bulkier than the GB40, so it earns its place only if your engine actually needs the extra reserve.
- Handles V8s and mid-size diesels
- Strong worklight for roadside use
- Trusted safety cutouts
- Heavier and harder to stash
- Overkill for a compact commuter
Best for: Owners of full-size trucks, large SUVs, and boats who need real cranking reserve.
GOOLOO A3 12V 3000A Portable Jump Starter with Air Compressor
★★★★★ 4.4 / 5 All-in-one pick
The A3 folds a 3000 amp jump starter and a built-in air compressor into one case, so a dead battery and a soft tire can be handled from the same box.,The compressor is handy but slow on larger tires, so treat it as a get-you-going tool rather than a shop inflator.
- Jump starting and tire inflation in one unit
- Clear LCD readout of charge and status
- Plenty of amps for most gas engines
- Compressor is slow on truck tires
- Bulkier than a plain jump pack
Best for: Road-trippers and one-bag drivers who want a single tool for battery and tire emergencies.
AstroAI S8 Car Battery Jump Starter 1500A - Portable 12V Lithium Jump Box
★★★★★ 4.3 / 5 Budget pick
The S8 is the small, low-cost box we would choose for a second car or a new driver, with 1500 peak amps that comfortably covers ordinary gas engines.,It skips the display and compressor to stay cheap and compact, which is a fair trade if you only need the core function.
- Very easy to store and carry
- Simple to operate
- Good value for the core job
- No LCD display
- Not for large diesels
Best for: New drivers or households wanting an affordable backup for a small gas car.
Clore Automotive Jump-N-Carry JNC660 1700 Peak Amp 12 Volt Jump Starter
★★★★★ 4.4 / 5 Shop-grade pick
The JNC660 is a traditional clamp-style unit built around a lead-acid pack, and it is the one mechanics tend to reach for because it holds its charge under repeated hard starts.,It is heavy and needs to be topped up on a schedule, so it suits a garage more than a glovebox.
- Rugged and repairable
- Strong sustained cranking power
- Long, easy-reaching cables
- Heavy and bulky
- Needs regular recharging to stay ready
Best for: Home mechanics and fleets that want a durable, workhorse booster.
NOCO Boost X GBX155 4250A UltraSafe Jump Starter, 12V Lithium Battery Booster
★★★★★ 4.5 / 5 Diesel pick
With 4250 peak amps the GBX155 is the pick for the hardest starts on this list, including large gas engines and sizeable diesels.,That capacity comes with size, weight, and a higher position in the range, so choose it only when a smaller pack would leave you short.
- Enough reserve for large diesels
- Fast USB-C recharging
- Same safety cutouts as smaller NOCO packs
- Large and heavy to carry
- More capacity than a small car needs
Best for: Diesel trucks, RVs, and large engines that smaller packs cannot turn over.
WOLFBOX 4000A Jump Starter, 12V Car Battery Jumper Portable with 65W Quick Charger and LED Display
★★★★★ 4.3 / 5 Value pick
The WOLFBOX MV24 packs a high 4000 amp rating, a bright LCD, and 65W fast charging into a feature-heavy box aimed at drivers who want a lot of function for the money.,As with any high-amp lithium pack, the headline number is a peak figure, so match it to your engine rather than assuming the biggest number is always better.
- Feature-rich with LCD and fast charging
- High amp reserve in a value pack
- Doubles as a capable power bank
- Peak amp claim needs realistic expectations
- Bulkier than a basic pack
Best for: Value hunters who want display, fast charging, and high amps in one pack.
A battery jump starter is one of those tools you ignore until the morning your car will not turn over. The picks below are chosen by comparing published amp ratings, rated engine sizes, safety features, and owner feedback, and the guidance that follows is meant to help you match a pack to your own car rather than chase the biggest number on the box.
Peak amps and matching the pack to your engine
Peak amps describe the short surge a starter delivers at the instant you crank, so the figure is a guide to engine size rather than a guarantee. A small four cylinder gas car is usually happy with around 1000 peak amps, larger V6 and V8 engines are safer near 2000 amps, and diesels ask for more current than a gas engine of the same size because they compress harder. Diesel and large-truck owners should look at 3000 amps and up. When you are between sizes, choose a little more reserve, because cold weather and an aging battery both eat into real-world cranking power.
Extras worth paying for: compressors, USB, and lights
Many modern packs bundle features beyond starting, and the right ones depend on how you drive. A built-in air compressor, as on the GOOLOO A3 and WOLFBOX MV24, is genuinely useful on long trips where a soft tire is as likely as a flat battery, though it will be slow on large truck tires. USB output turns the pack into a phone charger for roadside waits, and a bright worklight helps when you are connecting clamps in the dark. If you only want dependable starting, a plain pack is lighter, cheaper, and one less thing to keep charged.
Safety: clamps, reverse-polarity protection, and correct order
The most important safety habit costs nothing: follow the manual for your starter and your car, and connect the clamps in the correct order. As a general rule the red clamp goes to the positive terminal first, the black clamp to the recommended ground point next, and the clamps come off in reverse once the engine is running, but the printed instructions for your vehicle always take priority. Lithium packs from brands like NOCO add spark-proof clamps and reverse-polarity protection that warn or cut power if the clamps are crossed. Treat those features as a backup that saves you from a mistake, not as a reason to rush a connection.
Maintaining charge so it works when you need it
A jump starter is only useful if it holds a charge, and this is where many packs quietly fail their owners. Lithium units self-discharge slowly, so top them up every few months and always before a long trip. Traditional lead-acid boosters like the Clore Jump-N-Carry need charging more often to stay at full strength. Store any pack away from extreme heat and cold, glance at its charge indicator on a schedule you will actually keep, and recharge it fully after every use. A booster that lives dead in the trunk is no help at all on the morning you finally need it.
Questions people ask
What do peak amps actually tell me?
Peak amps describe the brief surge a jump starter can deliver at the moment you crank. It is a headline figure, not a sustained rating, so treat it as a rough guide to engine size rather than a promise. Match the amp reserve to your engine and leave some margin for cold weather.
How many amps do I need for my car?
A small four cylinder gas car is usually fine with roughly 1000 peak amps. Larger V6 and V8 engines are safer around 2000 amps, and diesels or large trucks often want 3000 amps or more. When in doubt, size up a little rather than running at the very edge of a pack's rating.
Can one jump starter work on both gas and diesel engines?
Yes, many lithium packs list separate gas and diesel ratings, and diesels generally demand more current for the same displacement. Check the manufacturer's rated engine sizes for both fuel types and choose a pack that clears your diesel figure with room to spare.
Is it safe to use a portable jump starter myself?
It is, if you follow the vehicle and starter manuals and connect the clamps in the correct order. Modern lithium packs add reverse-polarity protection and spark-proof clamps, but those are backups, not a license to rush. Read the instructions before your first use, not during an emergency.
What is the correct clamp order?
Follow the manual for your specific starter and car. As a general rule, connect the red clamp to the positive terminal first, then the black clamp to the manufacturer's recommended ground point, start the engine, and remove the clamps in reverse. Always defer to the printed instructions over any general guidance.
Do I need the air compressor and USB extras?
Only if they match how you drive. An air compressor is genuinely useful on long road trips where a soft tire is as likely as a dead battery, while USB output turns the pack into a phone charger. If you only want reliable starting, a plain pack is lighter and simpler.
How do I keep a jump starter ready to go?
Lithium packs slowly self-discharge, so top them up every few months and before any long trip. Lead-acid units like traditional clamp boosters need more regular charging. Store the pack somewhere out of extreme heat and cold, and check its charge indicator on a schedule you will actually remember.
Are these picks chosen from testing?
No. These are picks chosen by comparing published specifications, rated engine sizes, safety features, and owner feedback. We did not bench test the units ourselves, so use the manufacturer ratings and your own engine size as the final word before buying.
The bottom lineSo which one?
The right jump starter is the smallest one that comfortably clears your engine's demand with a little margin for cold mornings. We would send most drivers to the NOCO Boost GB40 for its blend of safety, size, and enough amps for ordinary gas cars. Diesel and big-engine owners should size up to the GB70 or GBX155, and anyone who values extras will like the compressor on the GOOLOO A3 or the display and fast charging on the WOLFBOX MV24. Buy for your engine, keep the pack charged, and read the instructions before you ever need it.
