The Best Portable Jump Starters
A lithium jump pack is the one piece of car gear that pays for itself the first time your battery dies. Here's how to pick the right one — and which we'd buy.
The short version
For most cars, a compact 1000A lithium jump starter like the NOCO Boost GB40 is the right call — it cranks a dead battery with no second car, fits in the glovebox, and doubles as a phone bank. Drive a truck, big V8, or diesel? Step up to a 2000A+ pack. That's the whole decision.
Who this is for
- Anyone who's ever waited on a stranger with jumper cables
- New drivers and parents building a first car kit
- Commuters who park alone, and cold-climate drivers whose battery quits in winter
What to buy first
Buy a compact 1000A lithium pack first. A dead battery is the most common reason a car won't move, and a self-contained pack means you're never depending on a second running vehicle. Match the amp rating up if your engine is large — never down.
The picks
Each pick links straight to Amazon — confirm the exact model, options, and current price there.
NOCO Boost GB40 1000A UltraSafe Lithium Jump Starter
The default everyone else is compared to: honest 1000A, spark-proof UltraSafe clamps, genuinely pocketable, and it cranks the vast majority of everyday gas cars.
NOCO Boost HD GB70 2000A UltraSafe Lithium Jump Starter
Doubles the GB40's output for big V8s, diesels, boats, and RVs while keeping NOCO's safety pedigree. What serious truck owners actually buy.
Hulkman Alpha85 2000A Smart Jump Starter with LCD Display
A color LCD shows exact charge, voltage, and jump readiness so you're not guessing at LED dots — plus 2000A and fast USB-C recharge.
GOOLOO GP4000 4000A Peak Lithium Jump Starter
The most cranking amps per dollar. Covers essentially all gas engines and big diesels for well under premium-brand heavy-duty pricing — just remember the peak number runs optimistic.
GOOLOO GP2000 2000A Compact Lithium Jump Starter
Small, light, and cheap, but still cranks bigger engines. The easy glovebox-backup pick for students and second cars.
Autowit SuperCap 2 Batteryless Supercapacitor Jump Starter
Holds no charge, so it never dies in the glovebox and shrugs off heat and cold. It charges itself from your weak battery in minutes, then jumps — ideal as a leave-it-in-the-car unit.
Compare the picks
| Pick | Peak amps | Handles up to | Best for | Approx. price |
|---|---|---|---|---|
| NOCO Boost GB40 | 1000A | 6.0L gas / 3.0L diesel | Most cars | $80–$100 |
| NOCO Boost GB70 | 2000A | 8.0L gas / 6.0L diesel | Trucks & diesels | $150–$180 |
| Hulkman Alpha85 | 2000A | 8.5L gas / 6.0L diesel | Smart display | $100–$130 |
| GOOLOO GP4000 | 4000A* | All gas / 10L diesel | Value power | $90–$130 |
| GOOLOO GP2000 | 2000A* | 8.0L gas / 6.0L diesel | Budget compact | $60–$80 |
What to check before buying
Peak amps vs. your engine
1000A covers most 4- and 6-cylinder gas engines. Big V8s, trucks, and diesels want 2000A or more. Cold weather lowers real output, so don't buy to the bare minimum.
Honest amp ratings
Premium brands (NOCO) rate conservatively; budget brands (GOOLOO, AVAPOW) print optimistic peak numbers. Don't compare a NOCO 1000A one-to-one with a budget 4000A — judge by the engine size the maker lists.
Safety protections
Look for spark-proof and reverse-polarity protection. It's the difference between a mistake being a beep and being a burnt hand.
It has to be charged
A jump pack that's sat flat in the trunk for a year won't help. Top it up a few times a year — or buy a batteryless supercapacitor unit that's always ready.
Common mistakes
- Relying on jumper cables — they need a second running car and a willing stranger, at night, on a shoulder.
- Buying the biggest 'peak amp' budget number instead of matching the maker's rated engine size.
- Letting it self-discharge until it's dead the one time you finally need it.
The honest tradeoffs
Size, power, and price pull against each other. A compact 1000A pack wins on pocketability and covers most drivers; a 2000A+ unit is peace of mind for big engines and cold climates but heavier and pricier. Budget brands give you more printed amps per dollar — just discount the headline number and read what engine they actually rate it for.
How we choose: picks are based on public research and manufacturer specs — no paid placement, and no hands-on testing we didn’t do. Outbound links are Amazon affiliate links: as an Amazon Associate, BlackBox Supply earns from qualifying purchases, at no extra cost to you. Full disclosure.
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