Gooloo GP4000
(1145 reviews)
4000A peak to start any engine, even a big 10L diesel: the Gooloo GP4000 also works as a power bank and an emergency light.
Characteristics
- Peak current: 4000A
- Engine capacity: All petrol, diesel up to 10L
- Battery: 26800mAh (power bank function)
- Outputs: USB QC 3.0 + USB-C, 3-mode LED light
- 4000A to start even a big diesel, plus power bank
Detailed overview: Gooloo GP4000 4000A car jump starter
The Gooloo GP4000 is one of the most powerful car jump starters in its class. With a 4000A peak, it can start a vehicle whose battery is completely flat, on its own, without needing another vehicle or conventional jump leads. It is the reassuring breakdown accessory to keep in the boot.
Its power lets it start all petrol engines and diesels up to 10 litres, covering almost all cars, SUVs, RVs and vans. Its internal 26800mAh battery allows over 60 starts on a single charge. Starting takes three simple steps, connecting the clamps to the battery, and a Boost button forces a start even on a very weak battery.
The GP4000 is also a versatile device. Its large internal battery makes it a genuine power bank: it charges smartphones, tablets and small devices via a USB QC 3.0 port (fast charge) and a USB-C port (input and output). It also has a powerful LED light with 3 modes (steady, strobe, SOS), very useful in a night breakdown. Safety is ensured by smart clamps and a system of 10 protections (reverse polarity, short circuit, overcharge, overheating, etc.).
Its only limits are its weight and bulk, slightly higher than less powerful boosters, and the fact that the Gooloo brand is mainly distributed online (Amazon, official site) rather than in mainstream retail. But for a powerful, versatile and affordable emergency booster, the GP4000 is one of the best value choices on the market.
Comparison
How does the Gooloo GP4000 compare with rival jump starters?
| Model | Peak current | Engine capacity | Power bank | Positioning |
|---|---|---|---|---|
| Gooloo GP4000 | 4000A | Diesel up to 10L | Yes (26800mAh) | Power, low price |
| Noco GB40 | 1000A | Petrol 6L / diesel 3L | Yes | Compact, reliable |
| Noco GBX75 | 2500A | Petrol 8.5L / diesel 6.5L | Yes | Premium |
The Gooloo GP4000 crushes the competition on raw power (4000A, diesel up to 10L) and price, where the Noco models focus on compactness, ruggedness and brand reputation. To start the biggest engines without breaking the bank, the GP4000 is unbeatable; for a premium pocket booster, the Noco remain benchmarks.
Related video
Video: The Ultimate Jump Starter Box: GOOLOO GP4000 Review
Our tester's review: Gilles Caron
The Gooloo GP4000 is the kind of jump starter you are glad to have in the boot the day the battery dies in the middle of winter. Its 4000A peak is generously sized: it started a petrol car with a completely dead battery without flinching, and it even claims big diesels up to 10 litres, covering almost all cars and vans. The smart clamps are reassuring, with protection against reverse polarity and short circuits, so you connect without stress. A nice point, it is not limited to starting: its internal battery charges a smartphone several times via the USB ports, and the powerful LED light helps at night on the roadside. It is a real breakdown multi-tool. The downsides are minor: it is fairly heavy and bulky for its class, and the brand is mainly present on Amazon rather than in shops. But for power and versatility at this price, it is an excellent choice.
Frequently asked questions: Gooloo GP4000 4000A car jump starter
Thanks to its 4000A peak, it starts all petrol engines and diesels up to 10 litres, covering almost all cars, SUVs, RVs and vans, even with a completely flat battery.
Its internal 26800mAh battery allows over 60 starts on a single full charge, enough to help several vehicles or stay ready for a long time in the boot.
Yes. Its large internal battery charges smartphones, tablets and small devices via a USB QC 3.0 port (fast charge) and a USB-C port. It also has a 3-mode LED light, handy in a night breakdown.
Yes. The GP4000 has smart clamps and a system of 10 protections (reverse polarity, short circuit, overcharge, overheating, etc.), so you can connect it safely, even as a non-expert user.
Other products in the "Jump Starters / Battery boosters" category
Gooloo GT3000
99.99€
3000A of power to restart almost anything: the Gooloo GT3000 revives a flat battery, charges your devices at 65W and works as an emergency light, all pocket-sized.
Noco GB40 Boost
124.95€ (124773)
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.
NOCO Boost GB70
166.73€ (29775)
The jump starter that shrugs off big engines: the NOCO GB70 delivers 2000A to restart a petrol up to 8L or a diesel up to 6L, safely.
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 11/07/2026