10 Best Jump Starters of 2026, Lithium Power Packs for Flat Batteries
There's a particular sound a car makes on a frosty January morning when the battery has given up: a tired click, then nothing, usually with the car parked on the street and nobody around with jump leads. A lithium jump starter fixes that on your own. This list is built from UK motoring roundups, spec sheets and amazon.co.uk listings rather than a workshop. For most drivers, the best jump starter is the NOCO Boost GB40, a compact 1000A pack rated for petrol engines up to 6.0L and diesels up to 3.0L.
Ignore the giant amp numbers on the boxes. The engine-size rating tells you far more, and I'll point out which packs add a tyre inflator, a laptop-grade power bank or just a torch.
- Realistic engine coverage: Rated for 6.0L petrol and 3.0L diesel. Covers most family cars.
- Built-in clamp protection: Spark-proof and reverse polarity protected. No power until connected correctly.
- Useful built-in extras: Power bank for phones and tablets. Recharges by USB-C.
- Handy work light: 100-lumen LED with seven modes. SOS and strobe included.
- Glovebox-friendly size: Compact 1.1 kg pack. Slips into a glovebox or door pocket.
- Sturdy everyday build: IP65 rubberised housing resists water and dust. Built for car boots.
- Warranty: Only a 1-year warranty on the UK listing. Shorter than some rivals.
- Realistic engine coverage: 1200A peak suits typical family cars. No engine size quoted, though.
- Built-in clamp protection: Lithium pack with supplied clamp leads. Connect in the manual's order.
- Useful built-in extras: Integrated air compressor for tyres. Power bank for mobile devices too.
- Handy work light: LED flashlight with high, SOS and strobe modes. Useful at night.
- Glovebox-friendly size: Compact and light enough for the glovebox. Easy to keep handy.
- Sturdy everyday build: Twelve months parts and labour cover. Familiar UK tool brand.
- Engine rating: No engine size in the listing. Check with Draper for larger diesels.
- Realistic engine coverage: Claimed coverage up to 10L petrol and 8L diesel. Big margin.
- Built-in clamp protection: Ten protections including reverse polarity and short circuit. Spark-proof clamps.
- Useful built-in extras: Air compressor stops at your preset pressure. Four nozzles included.
- Handy work light: Flashlight, SOS and strobe modes built in. Handy beside a motorway.
- Glovebox-friendly size: 925 grams with a carrying strap. EVA case keeps it tidy.
- Amp claims: The 8000A figure is a marketing peak. Judge it on engine size.
- Realistic engine coverage: Rated for 8.0L petrol and 6.0L diesel. Generous for the size.
- Built-in clamp protection: Smart clamps with ten protections. Reverse polarity and short circuit covered.
- Useful built-in extras: Two USB outputs for phones on the go. Doubles as a power bank.
- Handy work light: LED torch for checking under the bonnet. Simple and bright enough.
- Glovebox-friendly size: Pocket-sized, hand-held pack. Fits anywhere in the car.
- Warranty length: Eighteen months of cover, shorter than the Topdon's support package.
- Realistic engine coverage: Aimed at cars, trucks and boats. Engine size isn't listed precisely.
- Built-in clamp protection: One-touch boost for very flat batteries. UL and CE certification listed.
- Useful built-in extras: 65W USB-C in and out charges laptops. Wall charger included.
- Handy work light: LED flashlight with SOS, strobe and high beam. Good for roadside use.
- Glovebox-friendly size: Slim enough for a door pocket. IP64 rating for wet weather.
- Vague coverage: No clear engine-size rating on the listing. Hard to size properly.
- Realistic engine coverage: Rated up to 9.0L petrol and 7.0L diesel. Suits vans and pickups.
- Built-in clamp protection: Copper clamps and heavy-duty cables. Fireproof IP54 enclosure.
- Useful built-in extras: 24000mAh power bank with 45W USB-C PD. Charges laptops too.
- Handy work light: Built-in light plus an extendable hook. Hang it under the bonnet.
- Glovebox-friendly size: EVA carry case keeps clamps and cables together. Tidy in the boot.
- Bulk: Bigger and heavier than the glovebox packs. Lives in the boot.
- Short cover: One year of quality assurance. Less than the Wolfbox's two years.
- Realistic engine coverage: Starts an average 6ltr petrol or 4ltr diesel. Enough for most cars.
- Built-in clamp protection: Protected against short circuit, overload and reverse polarity. Sensible basics.
- Useful built-in extras: 10,000mAh battery with a USB-A outlet. Charges phones in a pinch.
- Handy work light: Integral LED flashlight for dark lay-bys. Simple to switch on.
- Glovebox-friendly size: Hard-shell zip case and IP66 rating. Fine in a damp boot.
- Micro USB: Recharges through micro USB rather than USB-C. Slower and dated.
- Modest output: 800A peak is fine for cars but light for big diesels.
- Realistic engine coverage: Rated for petrol up to 5.0L and diesel up to 3.0L. Honest figures.
- Built-in clamp protection: Short circuit, low voltage and reverse polarity protection. Covers the essentials.
- Useful built-in extras: Power bank with USB output. Charges by USB Type-C cable.
- Handy work light: 100LM work light with SOS and strobe modes. Bright enough for checks.
- Glovebox-friendly size: Multi-function pack sized for the boot. Easy to store.
- Small diesels: Diesels only up to 3.0L. Not for large vans or pickups.
- Thin backing: Little independent coverage of this pack beyond one UK roundup.
- Charge time: Takes a couple of hours to recharge fully. Plan ahead.
- Realistic engine coverage: Petrol up to 5.5 litres, diesel up to 3 litres. Clear rating.
- Built-in clamp protection: Smart clamp leads guard against wrong connections. Reassuring for beginners.
- Useful built-in extras: Two USB outputs at 3.0A and 2.1A. Digital battery-level display.
- Handy work light: LED light with strobe and SOS modes. Fine for roadside use.
- Glovebox-friendly size: Compact lithium polymer pack with a carry case. Easy to stash.
- Capacity mismatch: Listing quotes two different battery capacities. A little confusing.
- Diesel limit: Diesels up to 3 litres only. Fine for family cars.
- Basic extras: No inflator or USB-C output. Purely a starter and charger.
- Realistic engine coverage: Claims up to 9.0L petrol and 8.5L diesel. Treat as optimistic.
- Built-in clamp protection: Heavy-duty jump lead included. Basic protections built in.
- Useful built-in extras: 16800mAh power bank for phones and tablets. USB-C charging cable supplied.
- Handy work light: 300-lumen torch with four modes. Brighter than most here.
- Glovebox-friendly size: Phone-sized and weatherproof. Easy to leave in any car.
- Bold claims: 5000A and 9.0L claims look optimistic for a pocket pack.
- No backing: No independent UK reviews found for this model.
Other Jump Starters Worth Considering
- EC5 adapter powers 12V accessories.
- IP67 housing shrugs off rain.
- Tiny pack that fits a glovebox.
- Peak and engine claims look optimistic.
- No independent UK coverage found.
- LCD shows the remaining charge.
- Spark-proof smart clamps.
- Comes with a 24-month warranty.
- 8000A is a marketing figure, not a guide.
- Very little independent coverage.
- Up to 20 starts per charge, says DBPower.
- 15W USB-C output plus USB-A.
- 24 months of warranty cover.
- Charging adapter not included.
- Bulkier than the pocket packs.
- Built-in 150 PSI tyre inflator.
- Digital screen for pressure readings.
- Long standby between charges.
- Heavier at 1720 grams.
- Few listing details on protections.
In-Depth Reviews of the 10 Best Jump Starters
Each review explains what the listed engine ratings and extras mean for a UK driver, where each pack falls short and who it suits.
#1 · Editor's Choice
Noco Boost GB40 1000A Lithium Jump Starter
This is the pack I'd hand to anyone who parks on the street and dreads that winter click. The NOCO Boost GB40 is rated for petrol engines up to 6.0L and diesels up to 3.0L, enough for most family cars and small vans, with up to 20 starts per charge. Its spark-proof, reverse-polarity protection means nothing happens until the clamps are on the right way round, which is reassuring with cold fingers in the dark. At 1.1 kg it lives in a glovebox, and the IP65 housing copes with a damp boot. It isn't perfect, though. There's no tyre inflator, and the UK listing quotes only a 1-year warranty.
The verdict: The best jump starter for most UK cars: compact, properly rated and hard to connect wrongly.
#2 · Runner-Up
Draper 23722 1200A Lithium Jump Starter and Tyre Inflator
If you want one gadget for both roadside headaches, the Draper 23722 is it. Alongside a 1200A peak lithium jump pack it hides an integrated air compressor for topping up tyres, plus a power bank with one USB-C and two USB ports and an LED light with SOS and strobe. A UK motoring roundup rated it highly as a combined starter and inflator. My reservation is the listing itself. Draper doesn't quote an engine size, so if you run a big diesel, check before you buy, and at 1.55 kg it's heavier than the NOCO.
The verdict: The pick if you want a jump starter and a tyre inflator in one glovebox-sized box.
#3 · Best Value
AstroAI MF16 Jump Starter with Air Compressor
Let's deal with the 8000A first. That's a peak figure from the manufacturer, and peak amps from different brands aren't measured the same way, so I'd ignore it and look at the claimed coverage of 10L petrol and 8L diesel instead. What makes the AstroAI MF16 interesting is the air compressor: it inflates up to 150psi (10.3 bar) and shuts off at the pressure you set, with four nozzles and a 60cm hose. It weighs 925 grams, and AstroAI quotes operation from -20℃ to 50℃, which matters on a frozen driveway. It also did well in a UK roundup. Compared with the Draper it's lighter and better documented, though less familiar as a brand.
The verdict: Great value for a pack with a compressor, as long as you ignore the amp figure on the box.
#4 · Best Budget
Gooloo GP2000 2000A Lithium Jump Starter
Small, simple and properly rated: that's the Gooloo GP2000 in a sentence. Gooloo quotes 8.0L petrol and 6.0L diesel coverage, which comfortably covers a mate's pickup as well as the family car. Smart clamps carry ten protections, including reverse polarity and short circuit, and two USB outputs make it a phone power bank between emergencies. You don't get a compressor or a display, and the 18-month warranty is fine rather than generous. Against the NOCO, it trades a slightly rougher finish for wider engine coverage.
The verdict: A cheap jump starter with genuinely wide engine coverage and sensible safety features.
#5 · Best Power Bank
Wolfbox MegaVolt24 4000A Jump Starter with 65W USB-C
Buy this if your jump starter also has to keep a laptop alive. The Wolfbox MegaVolt24 packs an 88.8Wh battery with a 65W USB-C port that works in both directions, a QC3.0 USB-A port, and a 65W wall charger in the box that refills it in about 1.3 hours. A clear LED display shows the charge state, and the one-touch boost handles batteries too flat for the clamps to detect. The 4000A peak is a claim; more annoying is that the listing gives no clear engine-size rating, saying only that it suits cars, trucks and boats. One independent reviewer named it their overall favourite, which helps.
The verdict: The one for people who'd rather carry one power bank for the car and the laptop.
#6 · Best for Big Engines
Topdon JS3000 3000A Jump Starter with EVA Case
Most packs quote a single peak figure. Topdon also tells you the JS3000 gives 750A for 2 seconds, which is a far more useful number than its 3000A peak. It's rated up to 9.0L petrol and 7.0L diesel, so it's the pack here for a van, a pickup or a big 4x4. Copper clamps, heavy-duty cables and an IP54 fireproof enclosure suggest it's built for regular use, and the 24000mAh power bank adds a 45W USB-C PD port for laptops. The trade-off is bulk: it's a boot item, not a glovebox one. I couldn't find independent coverage of it either.
The verdict: The pack to buy for vans, pickups and big diesels.
#7 · Best UK Trade Brand
Sealey RoadStart RS800 800A Lithium-ion Jump Starter
Sealey is a familiar name in UK workshops, and the RoadStart RS800 feels like a trade tool. It's rated to start an average 6ltr petrol or 4ltr diesel engine, carries IP66 water resistance and ships in a hard-shell zip case. Protection covers short circuits, overload and reverse polarity, and the 10,000mAh battery charges a phone through USB-A. The weak spot is the micro USB input, which feels dated next to the USB-C on the NOCO and Gooloo. Still, a solid choice from a UK company.
The verdict: A dependable trade-brand pack for petrol and diesel family cars.
#8 · Clearest Amp Ratings
Laser 9343 800A Multi-Function Car Jump Starter
I like that Laser gives you both numbers: 400A starting current and 800A peak. That's honest, and the engine rating (petrol up to 5.0L, diesel up to 3.0L) matches it. You get a power bank, a 100LM light with SOS and strobe, and protection against short circuit, low voltage and reverse polarity. Big diesels are out, and a full recharge takes a while, so keep it topped up through the winter.
The verdict: Honest ratings and the basics done well for small to mid-size engines.
#9 · Best Compact
Clarke JSM1200 1200A Lithium Jump Starter
A compact pick for smaller engines. The Clarke JSM1200 gives 600A starting current and 1200A peak, and Clarke rates it for petrol engines up to 5.5 litres and diesels up to 3 litres, with the sensible note that results depend on battery condition. Two USB outputs, a digital battery-level display, an LED light and smart clamp leads complete it. The listing quotes two different battery capacities, which isn't ideal.
The verdict: A tidy compact starter for small petrol and diesel cars.
#10 · Lightest Pack
Trekure TK10 5000A Jump Starter Power Pack
Pocket-sized and very bold on paper. Trekure claims 5000A peak and coverage up to 9.0L petrol and 8.5L diesel from a phone-sized pack, which I'd treat with caution. The 300-lumen torch and 16800mAh power bank are handy, but with no independent coverage I'd buy the Gooloo first.
The verdict: Light and cheap, but the claims need a pinch of salt.
How We Researched and Scored These Jump Starters
This ranking is built from UK editorial roundups, manufacturer spec sheets and amazon.co.uk listings, not a workshop. I haven't clamped any of these packs onto a flat battery. Instead, we noted which jump starters independent UK motoring reviewers recommended, checked each against what its listing promises, then scored all ten on the same weighted criteria. Several picks have little or no editorial backing and earn their place on the spec sheet alone; the reviews say so.
What we compared for every jump starter:
- Engine-size rating for petrol and diesel, and whether it matches the amp claims
- Starting current where quoted, plus the peak figure
- Clamp safety: spark-proof design, reverse polarity and short-circuit protection
- Extras: tyre inflator, USB-C power bank, torch and display
- Size, weight, weather sealing and warranty
How we weighted the scores:
- Performance (30%): engine coverage and credible starting power
- Features (20%): compressor, power bank, light and display
- Ease of use (20%): clamp protection and how hard it is to get wrong
- Build (15%): sealing, cases, cables and warranty
- Value (15%): what you get within each tier, judged qualitatively
What to Look For in a Jump Starter
Start with the engine-size rating, not the amps. Peak current figures on portable packs are manufacturer claims, measured in different ways, which is how a pocket-sized box ends up advertising 8000A. A rating such as the NOCO's 6.0L petrol and 3.0L diesel tells you far more. Diesels need more cranking effort, so check the diesel figure. Where a maker quotes a starting current, as Laser and Clarke do, that's a useful extra clue.
Next, think about extras. A built-in air compressor, as on the Draper 23722, the AstroAI MF16 and the Lokithor JA300, turns the pack into a tyre inflator too. A strong USB-C port, like the Wolfbox's 65W, means it can charge a laptop. Lithium packs lose charge slowly, so top yours up every few months, and before winter.
Safety matters more than any spec. Check the car's handbook first, because some cars want you to use remote jump points under the bonnet rather than the battery itself. Clamp red to the positive terminal and black to the negative or an unpainted metal earth point away from the battery, then switch the pack on or press boost, and start the car. Remove black first, then red. Packs with reverse-polarity protection will refuse a wrong connection, but don't rely on that. Batteries can give off explosive gas, so avoid sparks and naked flames, and never jump a battery that is cracked, leaking or frozen.
On budget, a cheap jump starter pack like the Gooloo GP2000 covers most cars. Mid-range picks add inflators or bigger power banks, and the Topdon suits trucks and vans with large diesels. For a family car parked outside all winter, just buy the NOCO GB40 and call it a day.
Key Specs Compared
| Product | Peak Current | Rated Engine Size | Built-in Extras | Our Score |
|---|---|---|---|---|
| Noco Boost GB40 1000A Lithium Jump Starter | 1000A | up to 6.0L petrol, 3.0L diesel | USB power bank, 100-lumen LED torch | 9.8 |
| Draper 23722 1200A Lithium Jump Starter and Tyre Inflator | 1200A | Not listed | Air compressor, power bank, LED light | 9.7 |
| AstroAI MF16 Jump Starter with Air Compressor | 8000A (claimed) | 10L Petrol/8L Diesel (claimed) | air compressor up to 150psi (10.3 bar), LED light, USB | 9.5 |
| Gooloo GP2000 2000A Lithium Jump Starter | 2000A | up to 8.0L petrol, 6.0L diesel | USB power bank, LED torch | 9.4 |
| Wolfbox MegaVolt24 4000A Jump Starter with 65W USB-C | 4000A | Not listed | 65W USB-C fast charging, LED light | 9.2 |
| Topdon JS3000 3000A Jump Starter with EVA Case | 3000A | up to 9.0L petrol, 7.0L diesel | 45W USB-C PD, EVA case, LED light | 9.0 |
| Sealey RoadStart RS800 800A Lithium-ion Jump Starter | 800A | 6ltr petrol or 4ltr diesel | USB outputs, LED light | 8.8 |
| Laser 9343 800A Multi-Function Car Jump Starter | 800A | petrol up to 5.0L, diesel up to 3.0L | USB, LED light | 8.6 |
| Clarke JSM1200 1200A Lithium Jump Starter | 1200A | petrol up to 5.5 litres, diesel up to 3 litres | USB outputs, LED light | 8.4 |
| Trekure TK10 5000A Jump Starter Power Pack | 5000A (claimed) | up to 9.0L petrol, 8.5L diesel (claimed) | USB, LED light | 8.3 |
Frequently Asked Questions
Which brand jump starter is best?
NOCO is the brand I'd trust most for an everyday car, because its ratings are realistic and its clamps are hard to connect wrongly. Gooloo is strong value, Topdon suits big diesels, and Draper and Sealey are familiar UK tool names with sensible packs.
Which jump starter is better, Gooloo or Noco?
For most drivers the NOCO GB40 is the better-made pack, while the Gooloo GP2000 covers bigger engines for less outlay. The NOCO is rated for 6.0L petrol and 3.0L diesel, the Gooloo for 8.0L petrol and 6.0L diesel. If you drive a larger diesel, the Gooloo is the safer bet.
What is the most powerful battery jump starter?
On paper, the packs claiming 8000A, like the AstroAI MF16, look most powerful, but peak amps are manufacturer claims and not a reliable guide. Compare engine-size ratings instead. Here, the Topdon JS3000 is rated up to 9.0L petrol and 7.0L diesel, and it also quotes 750A sustained for 2 seconds.
What is the best jump starter for my car?
Pick one rated comfortably above your engine size, especially for diesel. A typical petrol hatchback is well covered by the NOCO GB40 or Clarke JSM1200, while a diesel van or pickup needs something like the Gooloo GP2000 or Topdon JS3000. Add a compressor model if slow punctures worry you.
Will a jump starter start a dead battery?
Usually, yes, if the battery is flat rather than failed. Many packs won't detect a completely dead battery, which is what boost buttons on the Wolfbox and AstroAI are for. If the car won't hold charge afterwards, the battery probably needs replacing rather than another jump.
How do I use a jump starter safely?
Follow your car handbook, then connect red to positive and black to negative or a bare metal earth point. Switch the pack on, start the engine, and remove black first. Never jump a cracked, leaking or frozen battery, and keep sparks and flames away, because batteries can give off explosive gas.
The Bottom Line
For most drivers, the NOCO GB40 is the jump starter I'd keep in the car: compact, sensibly rated and very hard to connect the wrong way. If you want a tyre inflator in the same box, get the Draper 23722, and if you drive a big diesel, the Topdon JS3000 is the one to buy.
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