Noco GB40 Boost
(124773 reviews)
1000A in your pocket to restart a car with a flat battery: the Noco GB40 is the UltraSafe jump starter that forgives wiring mistakes and doubles as a power bank and a light.
Characteristics
- Power: 1000A (petrol 6L, diesel 3L)
- Safety: UltraSafe, spark-proof
- Functions: USB power bank, 100 lm LED light
- Protection: IP65, compact
- 1000A, UltraSafe, power bank + light
Detailed overview: Noco GB40 Boost 1000A battery jump starter
The Noco GB40 Boost is a 1000A portable lithium jump starter, designed to restart a vehicle with a flat battery, without needing a second vehicle or classic jump leads. It is aimed at any driver, motorcyclist or DIYer who wants a self-contained, reliable and safe rescue solution, to keep in the glovebox or workshop.
With its 1000A, it restarts a petrol engine up to 6.0 L or diesel up to 3.0 L, including a fully discharged battery, and allows around twenty starts on a charge. Its great strength is safety: UltraSafe technology protects against sparks at connection and against reverse polarity. In practice, you attach the clamps without fear, even without experience, where classic leads wired wrongly can cause damage.
Compact and rugged with its IP65 rating (resistant to dust and water spray), it slips easily into a bag or glovebox. Beyond jump starting, it plays two very handy bonus roles: as a power bank, it charges a phone or tablet via its USB port when needed, and as a flashlight, it lights at 100 lumens with several modes, including an SOS and a flashing mode useful in a roadside breakdown.
Keep in mind that 1000A suits mainly city cars, compacts and small engines: for a large diesel or a van, it is better to aim for a more powerful model such as the Noco GBX75. Also remember to keep it charged so it is operational the day you need it.
Reliable, safe and versatile, the Noco GB40 Boost is one of the best-selling and best-rated jump starters on the market, a smart buy to never be stranded again.
Our tester's review: Gilles Caron
The GB40 is one of those little objects that save the day. Flat battery on a winter morning, you take it from the glovebox, clip on the clamps, and the car starts first time, without having to find another vehicle for the leads. What we appreciate most is the peace of mind: the UltraSafe spark-proof and reverse-polarity protection means you connect without stress, even when you are no mechanic. Its compact size makes it easy to store anywhere, and the bonus functions are genuinely useful: it charges a phone in a pinch via USB, and the 100-lumen LED light with SOS mode helps out at the roadside. Its rating across over 120,000 reviews says a lot about its reliability. Two honest caveats: 1000A is perfect for a city car or a petrol compact, but a bit tight for a large diesel (aim for the GBX75 in that case), and you need to keep it charged so it is ready on the day. For the vast majority of drivers, it is a smart, reassuring buy.
Frequently asked questions: Noco GB40 Boost 1000A battery jump starter
With 1000A, it restarts a petrol engine up to 6.0 L or diesel up to 3.0 L, even with a fully flat battery. It is ideal for city cars, compacts and small engines. For a large diesel or a van, prefer a more powerful model such as the GBX75.
Yes, it is one of its strong points: UltraSafe technology protects against sparks and reverse polarity. You attach the clamps stress-free, even without being a mechanic, where classic leads wired wrongly can cause damage.
Yes, it also works as a USB power bank to charge a phone in a pinch, and as a 100-lumen LED flashlight with several modes, including SOS. It is a versatile rescue tool to keep in the car.
It allows around twenty starts on a full charge, depending on the vehicle and temperature. Remember to keep it charged regularly so it is ready when needed, especially in winter.
Other products in the "Jump Starters / Battery boosters" category
Noco GBX75 Boost X
229.95€ (5372)
2500A to wake even a large diesel: the Noco GBX75 Boost X is the heavy-duty jump starter with fast USB-C recharge, safe and versatile, that leaves no engine down.
Published on 10/07/2026