Best jump starters UK (2026) — compared & price-tracked

A well-built, pocketable jump starter that does exactly what it promises for most family cars, with genuine safety touches (spark-proof clamps, reverse-polarity protection) rather than just a big amp number on the box. Like any lithium pack, keep it somewhere temperate — NOCO's own figures put charging at 0–40°C, and a car left in full sun on a hot day can get well past that, so a glovebox or an indoor shelf is a safer home than a parcel shelf or boot over summer.

Best for A compact glovebox backup that gets a flat petrol car or small diesel going without waiting for a breakdown van.

• Small and light (about 1kg) enough to live permanently in a glovebox or door pocket
• Spark-proof clamps and reverse-polarity protection make it safe for non-mechanics to use, even in the dark
• Doubles as a USB power bank and 100-lumen LED torch with an SOS mode, and holds charge for months between top-ups

• 1000A is a peak/marketing figure, not true cranking amps — real-world coverage is petrol engines up to about 6.0L and diesels up to about 3.0L
• Buying secondhand? Older stock recharges via the slower micro-USB rather than the USB-C port current units ship with

Who shouldn't buy it: Don't buy it if you drive a large diesel, van or 4x4 over about 3.0L — step up to NOCO's bigger GB50/GB70, which carry the amperage this model doesn't.

The GB70 is NOCO's mid-large Boost size: built to the same spark-proof, reverse-polarity-protected standard as the smaller GB40 but rated for meaningfully bigger engines. It costs more than most drivers need, so it's worth checking your engine size against the GB40 before paying the difference.

Best for Drivers who need to cover a bigger diesel - a van, 4x4 or larger family car - as well as ordinary petrol cars, in a pack that still fits in a glovebox.

• NOCO states coverage up to 8.0L petrol and 6.0L diesel engines - enough for most vans and 4x4s, not just small cars
• Spark-proof clamps and reverse-polarity protection make it safe for a non-mechanic to connect correctly in the dark
• Doubles as a USB power bank (via USB-A out) and 400-lumen, 7-mode LED torch with SOS/strobe

• Noticeably dearer than NOCO's entry GB40, which is enough jump-starter for most single petrol cars
• 56Wh lithium pack shouldn't be left in a hot car through summer or a cold shed over winter - keep it somewhere temperate between uses to protect battery lifespan

Who shouldn't buy it: Don't buy it if your only vehicle is a small petrol car - NOCO's cheaper GB40 (1000A, up to 8.0L petrol claim scales down accordingly, realistically small-to-mid petrol cars and diesels to ~3.0L) covers that job for less. Step up to the GB70 only if you regularly need to start a larger diesel, van or 4x4.

The GBX55 sits mid-range in NOCO's Boost X line and covers the vast majority of UK petrol cars and light diesels with headroom to spare. It's a sensible default pick rather than the cheapest or the most powerful option. Like any lithium pack, it's rated to +50°C, but a parcel shelf in direct summer sun can exceed that, so it's best stored in the footwell or indoors, with a top-up charge every three months or so.

Best for Drivers who want one mid-size jump starter that covers most family cars and small diesels, rather than buying NOCO's biggest (and priciest) unit just in case.

• Covers most family cars and light diesels, not just small hatchbacks
• IP65-rated case — dust-tight and water-resistant, though not submersible — plus spark-proof, reverse-polarity-protected clamps make it safe to leave in the boot
• USB-C input/output means it recharges from a normal charger or power bank and can return the favour, topping up a phone when needed

• The '1750A peak' figure is a marketing number, not a true cranking-amp rating — go by the litre coverage (7.5L petrol/5.0L diesel) when comparing models, not the amps
• Costs noticeably more than NOCO's smaller GBX35/GBX45, which are enough for most small cars

Who shouldn't buy it: Don't buy the GBX55 if you drive a large diesel pickup, van or 4x4 over roughly 5.0L diesel/7.5L petrol — step up to the GBX75 or GBX125. And if you only ever drive a small hatchback, the cheaper GBX35/GBX45 will do the job for less.

NOCO states honest engine-size coverage (8.5L petrol / 6.5L diesel) rather than just a peak-amp headline, and it backs that up with reverse-polarity protection and spark-proof clamps that make it hard to use unsafely. It's a premium price, but the extra size and 60W USB-C charging justify it for larger vehicles. Like all lithium packs, keep it indoors rather than in a hot car boot over summer — heat shortens the cell's life.

Best for Households with a bigger petrol car, 4x4, van or light diesel, who want one unit that both starts the car and doubles as a genuinely useful USB-C power bank.

• Stated engine coverage (8.5L petrol/6.5L diesel), not just an inflated amp number
• 60W USB-C Power Delivery doubles as a genuine phone/laptop charger
• Reverse-polarity protection and spark-proof clamps reduce the risk of user error

• Expensive next to smaller jump starters covering typical hatchbacks
• IP65 only applies with the ports closed — it isn't fully waterproof

Who shouldn't buy it: You only ever drive a small petrol hatchback or supermini — a smaller, cheaper NOCO Boost model (e.g. GBX55) will jump it fine without paying for capacity you won't use.

A well-built jump starter for genuinely large engines - petrol up to 9.0 litres and diesel up to 7.0 litres - from a brand with a strong safety-engineering reputation. Treat the 3000A peak-amp figure as a marketing number rather than a true cranking-amp rating, and, like any lithium pack, keep it indoors rather than in a hot car over summer.

Best for Owners of large 4x4s, pickups, vans or big diesel engines who want serious jump-starting headroom in one unit.

• Reverse-polarity protection and spark-proof clamps make it safe to use even for non-mechanics
• Genuinely rated for large diesels up to 7.0L and big petrol engines up to 9.0L, where smaller jump starters fall short
• A 500-lumen torch with SOS mode and a 12V accessory port add everyday utility, though USB charging in and out is a modest 5V/2.1A rather than fast

• The 3000A peak-amp figure is a marketing number, not a true cranking-amp rating - the litre coverage is the more honest guide
• Considerably pricier than NOCO's smaller GB40/GB70 units, and overkill for a standard petrol hatchback or family car

Who shouldn't buy it: Don't buy it if you drive a standard petrol car or small diesel - a smaller, cheaper NOCO unit (like the GB40 or GB70) will start it just as reliably for less money.

A genuinely capable jump starter for the largest engines on the road, with sensible safety design — but the 10.0L petrol/8.0L diesel rating covers HGV- and marine-sized engines that no ordinary UK household car needs. Most readers should look at a smaller Boost X model instead; this is a premium buy for a specific niche, not a default pick, and the marketing amp figure is not the number that matters.

Best for Households with a larger petrol car, a diesel 4x4/van/motorhome, or more than one vehicle to cover.

• Covers larger engines than most household jump starters — up to 10.0-litre petrol, 8.0-litre diesel
• UltraSafe 2.0 spark-proof design with reverse-polarity protection makes it hard to use unsafely
• 60W USB-C fast charging doubles as a genuinely useful power bank for phones, tablets and laptops

• It's substantially over-specced for most UK cars — a typical 1.0-2.0L petrol or 1.5-2.0L diesel is covered comfortably by NOCO's smaller GB40 or GBX45, for roughly a quarter to a third of the price
• At 2.64kg it's noticeably heavier and bulkier than a glovebox-sized jump starter

Who shouldn't buy it: You drive a typical UK family car. Most petrol cars (1.0-2.0L) and diesels (1.5-2.0L) are covered just as reliably by NOCO's smaller, cheaper GB40 or GBX45 — which is most households. Save the GBX155 for a genuinely large diesel van, motorhome, 4x4, or a multi-vehicle household.

A well-built two-in-one from a brand with a strong safety record — reverse-polarity protection and spark-proof clamps are exactly what you want in something this powerful. Treat the 6.0L diesel figure as NOCO's best-case ceiling rather than a guarantee: with a 31.8Wh pack also running the compressor, a cold-weather start on a large diesel near that limit will be marginal, with fewer retries than on a smaller engine. As with any lithium pack, keep it somewhere temperate rather than left in a hot car through summer.

Best for Drivers who want one glovebox tool that can both jump-start the car and top up or reinflate a tyre, not just a jump pack alone.

• Reverse-polarity protection and spark-proof clamps make it hard to use unsafely
• Air compressor (100 PSI / 67 LPM) is genuinely useful for a slow puncture or seasonal tyre top-ups, not just a marketing add-on
• 60W USB-C output doubles as a proper power bank for phones and laptops

• Costs noticeably more than a plain jump starter without a compressor
• Heavier and bulkier (3.15kg) than pocket-sized packs, so less ideal where boot space is tight

Who shouldn't buy it: Skip it if you already own a separate tyre inflator — you'd be paying the air-compressor premium twice. NOCO's plain Boost packs (e.g. GB40, GB70) cover similar engine sizes for less if you only need the jump-start function.

A genuinely large-capacity jump starter with the battery to back up its claims, plus enough charging power to double as an emergency power bank. Treat the 6000A peak-amps figure as a marketing number rather than a true cranking-amps rating — the 12V/24V selectable switching and reverse-polarity protection matter more day to day.

Best for Van, truck, and motorhome owners who want one heavy-duty pack that jump-starts a large diesel engine, tops up phones and laptops, and lights the roadside.

• Large 36,400mAh/133.6Wh battery — VTOMAN claims around 70 jump-starts per charge on 12V vehicles, 45 on 24V
• 145W DC input recharges the unit itself in about 90 minutes (the USB-C port is slow-charge only, ~18W)
• 12V/24V selectable, with reverse-polarity and 10-point protection, suits mixed car/van/truck households

• 6000A is a peak-current marketing figure, not an independently verified cranking-amps rating, so it's hard to cross-shop against CA-rated competitors
• At 2.9kg and 270x189x160mm it's bulkier than a car-only jump pack — overkill if you only ever start a small petrol hatchback

Who shouldn't buy it: Skip this if you only run a small petrol car and don't want to carry a 2.9kg unit, or if you can't keep it somewhere temperature-stable — like all lithium packs, it shouldn't be left in a hot car through summer.

TOPDON rates the JS2000 Pro at 550A sustained for 2 seconds — the true cranking-amps figure — with the widely quoted 2500A only a marketing peak, so judge starting power by the former. TOPDON's own claim of up to 8.0L petrol / 6.0L diesel coverage is a manufacturer figure rather than a tested one; against the 550A rating a more realistic ceiling is around 6.0L petrol / 3.0L diesel, less for a cold start. Reverse-polarity protection is built in as standard and the unit doubles usefully as a power bank, but like any lithium pack it shouldn't be left in a hot car through summer.

Best for Petrol and small-to-mid-size diesel car owners who want jump-start cover plus a general-purpose USB power bank and torch in one unit.

• Reverse-polarity and multi-point smart protection built in as standard
• Doubles as a 16,000mAh USB power bank and LED torch, not just a jump starter
• Comes with jumper cables and an EVA carry case at a mid-range price versus premium brands like NOCO

• The 2500A peak-amps figure is a marketing number — the true cranking-amps rating is 550A for 2 seconds, so judge starting power by that rather than TOPDON's 8.0L petrol/6.0L diesel engine-coverage claim
• Lithium pack needs storing indoors; leaving it in a hot car boot over summer will degrade the battery

Who shouldn't buy it: Skip it if your vehicle is a large diesel 4x4, van, or anything above roughly 3.0L diesel — TOPDON's own 6.0L diesel claim is optimistic against this unit's 550A/2s rating, so step up to a heavier-duty unit rated for bigger engines instead.

The RB 4000's headline 4000A is a marketing peak figure — the real-world number is the 2060A maximum cranking current, still a credible step up from CTEK's own RB 3000. It's expensive for a lithium jump pack, so it earns its price on engineering and warranty rather than the badge number; like any lithium pack, store it indoors rather than in a hot car boot or a freezing shed.

Best for Drivers with larger engines or frequent breakdown-cover-style use who want CTEK's build quality and 2-year warranty, not just a cheap booster.

• Genuine reverse-polarity and spark-proof protection from an established 12V specialist (CTEK), not just a marketing claim
• Doubles as a real power bank (USB-A QC3.0 + USB-C PD30W) and 3-mode LED torch
• 2-year warranty and UK support/spares via CTEK's own store

• It costs 3-4x a NOCO or GOOLOO booster with broadly similar real cranking output
• CTEK doesn't publish a litre-based engine limit, so buyers must judge fit from the 2060A cranking figure rather than a simple 'fits my car' claim

Who shouldn't buy it: Don't buy this if you only want an occasional emergency booster for a small petrol car — a NOCO GB40 or GB70 does the same job for a third of the price. The RB 4000 makes sense for larger diesels, frequent use, or if CTEK's warranty and support matter to you.

A solidly engineered, compact booster with proper reverse-polarity and spark-proof protection, but CTEK charges a premium versus rivals and — unusually for this category — doesn't publish an engine-litre coverage figure, so you're working from amp numbers alone.

Best for Drivers who want a compact, well-made jump starter that doubles as a genuinely useful USB power bank and torch, and are happy to pay a premium for CTEK's build quality and safety protections.

• Reverse-polarity protection and spark-proof technology built in
• Doubles as a genuinely useful USB-A/USB-C power bank (16,000mAh/59.2Wh) with a 3-mode LED torch
• Compact, IP65-rated build with a 2-year warranty

• No published engine-litre (petrol/diesel) coverage figure — CTEK quotes only current (1300A start, 1980A max cranking), making it harder to size against your vehicle than rivals that state '9.0L petrol/7.0L diesel'-style claims
• Noticeably pricier than similarly-rated 3000A boosters such as the NOCO Boost GB150

Who shouldn't buy it: Don't buy it if you want an on-the-box litre-engine guarantee for a large diesel van or 4x4 — CTEK doesn't publish one, so cross-check the 1980A max cranking figure against your vehicle first, or consider a rival that states a litre rating directly. Also don't leave it in a hot car in direct summer sun, and recharge it every six months or so if it's sitting unused — like any lithium pack, heat and long dormancy both degrade the cells.

A compact, keenly priced pack that covers the vast majority of UK cars, with sensible reverse-polarity protection built in. Treat the peak-amp figure as a marketing number rather than a tested rating and judge it on engine-size coverage and reviews instead.

Best for A light, pocket-sized boot spare for petrol cars and most diesels — not for large diesel 4x4s or vans.

• Very light at 329g and small enough for a glovebox
• Covers up to 7.0L petrol and 5.5L diesel — enough for nearly all UK cars
• Reverse-polarity protection, plus nine other built-in safety cut-outs (including overcurrent, overcharge and short-circuit protection)
• Doubles as a USB power bank and 3-mode LED light (torch/SOS/strobe)

• AstroAI doesn't publish battery capacity (mAh) on the UK listing, making it hard to compare against rivals on paper
• No air compressor — AstroAI's newer MF16 model adds one

Who shouldn't buy it: Don't buy this if you drive a large diesel van, 4x4 or pickup over roughly 5.5L — step up to a higher-rated pack instead. And like any lithium jump starter, don't leave it in a hot car through summer; keep it somewhere temperate.

A solid mid-range pick from a long-established UK brand — the safety engineering (audible and visible reverse-polarity, anti-spike and short-circuit warnings) is more reassuring than the headline amp figure. Treat the 1000A rating as a marketing peak, not a cranking-amp spec, and buy on the stated engine coverage instead.

Best for Family cars, small vans and hybrids up to 5.0L petrol or 2.0L diesel that want a compact glovebox jump starter with a genuine safety pedigree.

• Ringtelligence protection gives audible and visible warnings for reverse polarity, anti-spike and short-circuit faults, not just a silent cut-out
• Boost function will attempt a start on a fully depleted (not just flat) battery, where cheaper units refuse
• Doubles as a genuinely useful power bank — USB-C PD30W plus USB-A quick charge, 2-hour recharge, built-in LED torch, carry case and both cables included

• The '1000A' figure is Ring's peak/marketing number, not a true cranking-amp rating — buy on the 5.0L petrol / 2.0L diesel coverage claim, and size up to the 1500A or 2000A Ultraboost for bigger diesels or SUVs
• 8,000mAh is on the small side next to rival lithium packs at this price, so it needs charging more often if used regularly

Who shouldn't buy it: Don't buy this size if your vehicle is over 2.0L diesel, a large SUV or a 4x4 — step up to Ring's 1500A or 2000A Ultraboost. And whichever size you buy, don't leave a lithium jump starter in the car on a hot day — bring it indoors in summer, as heat degrades the cell.

This is a proper trade-grade AGM jump-starter, not a pocket power bank — at around 17.6kg net (20.6kg boxed) it's built to crank vans, tractors and plant as well as cars. The headline 3000A is a peak figure; SIP's own quoted cranking rate is a more honest 1200A (12V) / 600A (24V) — solid for this class, though on 24V that's best treated as an HGV-start assist rather than a guaranteed solo crank.

Best for Trade users, farms and fleet operators who need one AGM booster that covers cars through to vans, tractors and excavators on both 12V and 24V, with 24V HGV starts handled as an assist rather than a guaranteed solo crank.

• Dual 22Ah AGM batteries with a realistic, SIP-quoted cranking rate rather than just an inflated peak-amp number
• Genuine 12V and 24V coverage — vans, tractors and excavators, not just cars
• Reverse-polarity alarm and automatic circuit overload protection, in a rugged steel case

• Heavy and bulky at 17.6kg net (20.6kg boxed) — not something to casually keep in a hatchback boot
• AGM cells need recharging roughly every 3 months when not in regular use, so it wants a bit more upkeep than a sealed lithium pack

Who shouldn't buy it: Don't buy this if you just want a light glovebox jump-starter for occasional car use — it's a heavy trade unit built for fleet/plant duty; a 2-3kg lithium pocket pack will be cheaper, easier to store and plenty for a single car.

A well-specified jump starter with sensible safety features and rated headroom for the vast majority of UK vehicles. Treat the 4000A peak-amp and 10.0L diesel figures as manufacturer marketing rather than literal ratings — expect real-world engine coverage to be well below the box figures, especially on a cold morning — and store it indoors rather than in a hot car.

Best for Households with one larger vehicle (a big petrol saloon, an SUV, a van or a diesel with decent-sized engine) who want a single jump starter with headroom rather than cutting it fine on a smaller unit.

• Rated well beyond the engines in most UK cars, vans and campervans, so even allowing for marketing figures there's headroom (the maker's rating, not a result we have measured)
• 10-layer protection circuitry with reverse-polarity indication and spark-proof clamps reduces the risk of a mis-clamped jump going wrong
• Discloses a 24,000mAh (about 89Wh) battery, comfortably under the 100Wh airline hand-luggage limit, and doubles as a USB-A/USB-C power bank with a built-in torch

• The 4000A peak-amp and 10.0L diesel figures on the box are marketing numbers, not cranking-amp ratings — expect real-world coverage to be well below them, especially on a cold morning
• GOOLOO's own product page advertises a '100W' power bank mode that the port ratings don't support — actual output tops out at around 15W, so don't expect fast laptop charging

Who shouldn't buy it: Don't buy this if you only run a small hatchback or motorbike — a cheaper, smaller-capacity jump starter will do the job and take up less glovebox space; and don't buy any lithium jump starter if you have nowhere frost-free and cool to store it, since GOOLOO's own guidance (like other lithium packs) is to keep it out of a hot car in summer and a freezing one in winter.

A genuinely capable capacitor-based jump starter that shrugs off cold and skips the trickle-charging faff of lead-acid units, but the price is for the bare tool — factor in an M18 battery and charger before you commit.

Best for Households or drivers already on the Milwaukee M18 battery platform who want a compact, no-maintenance jump starter that's ready year-round.

• Ready instantly with no pre-charge or maintenance, unlike lead-acid jump packs that self-discharge over winter
• Reverse-polarity, spark-proof and overheat protection built in
• Rated to -18C, so it works in the cold snaps when cars are most likely to fail

• Sold as a bare unit — no M18 battery, charger or case included, which pushes the real cost up considerably if you're starting from scratch
• 2,000 peak-amp marketing figure is not a cranking-amp rating; treat the 8.1L petrol / 3.0L diesel coverage claim as the honest guide to what it can actually start

Who shouldn't buy it: Don't buy it if you don't already own M18 batteries and just want a simple grab-and-go jump starter — a self-contained lithium jump pack with its own built-in battery will be cheaper and simpler for occasional, one-off use.

A well-specced 4-in-1 — jump starter, 130PSI compressor, floodlight and a UK mains AC outlet — but it sits at the premium end of the category. The 1500A figure on the box is Nebo's own quoted peak, not a sustained rating; 600A is what it can hold for up to 3 seconds. Judge engine coverage on the conservative 6.0L petrol / 3.0L diesel figure rather than the 8L some retailers quote for this same model — listings disagree, so treat the higher numbers with caution.

Best for Households with a car or van who want one unit that jump-starts, inflates tyres and lights the driveway, not just the cheapest way to start a flat battery.

• 4-in-1 design (jump starter, 130PSI compressor, floodlight and a UK 3-pin AC mains outlet) means one item in the boot instead of four
• Bi-directional USB-C Power Delivery means it can charge a phone or laptop, or be charged itself from the same port, and works as a power bank in a pinch
• Diesel coverage to around 3.0L, petrol to 6.0L on the conservative figure — enough for most UK family cars and 4x4s — with spark-proof jumper cables and reverse-polarity protection built in

• At its price you're paying for the compressor, floodlight and AC outlet bundled in — if you only want jump-starting, cheaper single-purpose units do that one job for a lot less
• The AC mains outlet is for very low-draw devices only — Nebo and B&Q quote different maximum wattages for it, and even the higher figure would drain the 55.5Wh battery in well under an hour, so don't rely on it as meaningful backup power

Who shouldn't buy it: Don't buy it if you only need a basic once-a-year jump starter for a small car — a simpler unit under £60 does that single job without paying for a compressor, light and AC outlet you may never use. Nebo specifies a 0–45°C operating range, so don't leave it in a hot car boot over summer or a freezing unheated garage over winter — keep it somewhere temperate.

The CS FREE isn't a jump starter — it's a charger-based alternative that revives a flat 12V battery by topping it up rather than delivering a direct crank current, so it's best read as the adjacent 'maintainer-first' pick in this guide rather than a head-to-head jump-starter winner. It skips the inflated peak-amp claims common on cheap jump packs and instead publishes honest output figures (20A/240W). CTEK's own figure of about 15 minutes gets the engine started, but that's a boost-to-start time only — independent UK testing (Parkers) found a full recovery to healthy battery condition took around 8 hours. It's gentler on modern vehicle electronics, and it doubles as a USB-C/USB-A power bank. As with any lithium pack, keep it indoors rather than in a hot car boot over summer.

Best for Drivers who want a genuinely safe, charger-based alternative to a jump starter — not an instant fix, but a gentler way to revive a flat 12V battery — and don't mind waiting for it.

• No inflated peak-amp marketing — CTEK states real, honest output (20A/240W) rather than a headline crank-amp number
• Charge-based Adaptive Boost is gentler on sensitive vehicle electronics than a direct high-current jump
• Doubles as a USB-C/USB-A power bank for phones and laptops, and is solar-chargeable

• Around double the price of typical lithium jump starters with similar real-world capability
• The 15-minute figure is a boost-to-start time only — in Parkers' UK review a full recovery to healthy battery condition took around 8 hours, and the same review noted the clamps don't grip terminals as tightly as a traditional jump-start clamp

Who shouldn't buy it: Don't buy this if you need an instant roadside jump start — the CS FREE is a charger-based alternative, not a traditional jump starter: it needs its own pack charged, takes about 15 minutes just to get the engine going, and getting a flat battery back to full health takes hours, not minutes. Jump leads and a neighbour's car (or a traditional direct-boost jump pack) will get you moving faster.

A genuinely compact, well-priced pack with solid basic safety protections — but the 10.0L petrol/8.0L diesel coverage claim is a headline marketing figure, not a working spec: for a 37Wh pack, reliable coverage is closer to petrol engines up to about 3.0L and small diesels up to about 2.5L. For its size and price this is a sensible small-car backup, not a unit to rely on for a large diesel 4x4 or van.

Best for A glovebox emergency pack for a small-to-medium petrol car or run-around, doubling as a phone power bank and torch.

• Small enough to actually keep in the car permanently
• Doubles as a USB-C/USB-A power bank and 3-mode LED torch
• Reverse-polarity protection plus a wider 10-point safety system

• Peak-amp and engine-coverage figures are optimistic for the battery size — don't expect it to reliably start a large diesel
• Single small lithium cell means fewer repeat starts than a bulkier unit if the first attempt fails

Who shouldn't buy it: You drive a large diesel engine, a van, or a 4x4 — step up to a higher-capacity pack. Also don't leave this (or any lithium jump starter) sitting in a car during hot summer weather: AstroAI's own manual caps charging at 45°C and operation at 50°C, both easily exceeded inside a parked UK car in summer, so store it indoors and bring it out when needed.