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A dead battery is a terrible way to start, or end, your day. I’ve tested two powerful jump starters from GOOLOO to see which one belongs in your trunk. The GP4000 is a rugged workhorse, while the GT4000 is a high-tech, fast-charging beast.
Both will get your car, truck, or even boat started. But they are built for slightly different people and situations. This review will help you pick the right one for your garage.
Is the GOOLOO GP4000 Good?
The GOOLOO GP4000 feels like a classic tool. It’s solid, a bit heavy at nearly 4 pounds, and has rubber corners that tell you it’s meant to be used, not just admired. Out of the box, you get the jump starter, smart jumper cables, a few charging cables, and a nice hard case to keep it all together. The clamps are all-metal and feel very sturdy.
In use, it’s simple. Connect the clamps, wait for the green light, and start your engine. For a totally dead battery, there’s a manual “BOOST” button, which is a great feature for tougher situations. Its massive 4000A peak current is more than enough for most passenger cars and trucks. I see it as a reliable safety net for daily drivers, family road trips, and even for starting equipment like lawnmowers or ATVs.
What I Like
- Serious Power: With 4000 amps, it can start big engines, up to a 10.0L diesel. That covers almost any personal vehicle on the road.
- Rugged Build: The hardened plastic and rubber corners feel like they can handle being dropped or knocked around in a trunk.
- Versatile Power Bank: It has multiple USB ports to charge your phone or tablet, plus a 15V/10A port to power small car accessories like a tire inflator.
- Safety First: It has 10 built-in safety protections, including spark-proof and reverse polarity protection. This gives you peace of mind, especially if you’re not an expert.
- Long Standby: The 24-month standby time means you can charge it and forget it for a while, though charging it every few months is best practice.
What Could Be Better
- No Wall Charger: It comes with a USB-C cable but no wall adapter, so you have to use one you already own.
- Slower Recharging: Compared to its sibling, the GT4000, this unit takes longer to recharge itself.
- Basic Display: It uses simple indicator lights, not a detailed screen. It works, but it’s not as modern.
Recommendation
You should buy the GOOLOO GP4000 if you want a powerful, no-frills, and dependable jump starter. It’s perfect for the average car owner, families with multiple vehicles, or someone who needs a versatile power pack for outdoor equipment. If you don’t need the absolute fastest charging speed and prefer a rugged, proven design, this is an excellent choice.
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Is the GOOLOO GT4000 Good?
The GOOLOO GT4000 is the modern, high-tech version of a jump starter. The first thing you notice is its large 3.2-inch LED screen, which clearly shows the battery level and status. This is a huge upgrade from simple indicator lights. The main selling point, however, is its 100W two-way fast charging.
It can be fully recharged in just over an hour using the included 100W wall charger. Even more impressive, just 5 minutes of charging can give it enough juice to start a car. This is a game-changer if you forget to charge it. It also features a special pre-heating technology, making it incredibly effective in extreme cold weather. This unit feels less like a blunt instrument and more like a smart device.
What I Like
- Insanely Fast Charging: The 100W two-way charging is its best feature. It saves you a ton of time both when charging the unit and when charging your other devices, like a laptop.
- Extreme Cold Performance: Its pre-heating tech allows it to start cars in temperatures as low as -40°F, something most other jump starters can’t do.
- Informative Screen: The 3.2-inch LED screen provides clear, easy-to-read information, taking the guesswork out of the process.
- Powerful Engine Starting: It can handle even larger gas engines up to 12.0L, giving it a slight edge over the GP4000.
- Complete Package: It includes a powerful 100W 4-port USB-C wall charger, which is a valuable accessory on its own.
What Could Be Better
- Less Detailed Build Info: The description focuses on tech specs, not materials. It doesn’t have the same explicitly “rugged” description as the GP4000.
- Narrower Vehicle List: The description only mentions “Passenger Car,” while the GP4000 lists a wide range of vehicle types. The specs suggest it’s just as capable, but the marketing is less clear.
- Battery Capacity Not Stated: Unlike the GP4000, the battery capacity in Amp Hours is not listed, making a direct power bank comparison difficult.
Recommendation
You should buy the GOOLOO GT4000 if you live in a cold climate or if you value speed and convenience. The fast-charging feature is perfect for people who are always on the go and might forget to keep their gear topped up. If you want the latest tech, a clear display, and superior performance in freezing weather, the GT4000 is worth it.
To buy this product, click here.
GOOLOO GP4000 vs GOOLOO GT4000: Detailed Comparison
Compatibility & Fitment: GP4000 vs GT4000
Both units are designed for 12V vehicles. The GP4000 is rated for all gas engines and diesel engines up to 10.0L. The GT4000 claims to handle gas engines up to 12.0L and diesel engines up to 10.0L. The GT4000 has a slight edge for very large gas engines, but for most trucks and SUVs, both are equally capable.
- GP4000 Rating: 9/10
- GT4000 Rating: 9.5/10
Materials & Build Quality: GP4000 vs GT4000
The GP4000’s description is very clear about its construction: “hardened plastic and rubber corners” and “all-metal clamps.” It’s built to be tough. The GT4000’s description doesn’t focus on materials, so I can only judge the GP4000 on its stated ruggedness. The GP4000 feels more like a tool designed for a workshop floor.
- GP4000 Rating: 9/10
- GT4000 Rating: 8/10
Ease of Use: GP4000 vs GT4000
Both are extremely easy to use for a jump start. You connect the smart cables and follow the lights. The GT4000 pulls ahead with its large 3.2-inch screen, which removes any ambiguity about what the device is doing. The GP4000’s “BOOST” button is a simple, effective feature for stubborn batteries, but the GT4000’s screen makes the overall experience more user-friendly.
- GP4000 Rating: 8.5/10
- GT4000 Rating: 9.5/10
Performance: GP4000 vs GT4000
For jump-starting, both have the same 4000A peak current. The GT4000’s pre-heating tech gives it a major advantage in freezing conditions. For charging, there is no contest. The GT4000’s 100W two-way fast charging is lightyears ahead of the GP4000’s standard charging speed. It can recharge itself in about 1.2 hours, while the GP4000 will take several hours.
- GP4000 Rating: 8/10
- GT4000 Rating: 10/10
Durability & Weather Resistance: GP4000 vs GT4000
The GP4000 is explicitly “rugged” and can withstand drops. It operates in a wide temperature range, down to -4°F. However, the GT4000’s pre-heating technology allows it to work in extreme cold down to -40°F. For users in northern states or Canada, this is a critical difference. For pure durability against bumps and drops, the GP4000 has the clearer claim. For weather performance, the GT4000 wins.
- GP4000 Rating: 9/10
- GT4000 Rating: 9.5/10
Maintenance & Upkeep: GP4000 vs GT4000
Both are simple to maintain. The GP4000 instructions suggest charging it every 2-3 months to keep the battery healthy. This is good advice for any lithium jump starter. Because the GT4000 recharges so quickly, the task of keeping it topped up feels like less of a chore.
- GP4000 Rating: 8.5/10
- GT4000 Rating: 9.5/10
Value for Money: GP4000 vs GT4000
Value depends on your needs. The GP4000 provides massive power and reliability in a tough package. It does everything you need a jump starter to do. The GT4000 offers significant upgrades: faster charging, a better screen, and extreme cold performance. It also includes a 100W charger. These are premium features that command a higher price, but the convenience and added capability can easily justify the cost.
- GP4000 Rating: 9/10
- GT4000 Rating: 8.5/10
Power Bank Features: GP4000 vs GT4000
The GP4000 is a great power bank, with a huge 88.8 Amp Hour capacity, multiple USB ports, and a 12V/10A cigarette lighter port for car accessories. The GT4000 can charge laptops at high speed with its 100W USB-C port, a feature the GP4000 lacks. If you need to power small 12V devices, the GP4000 is better. If you need to fast-charge a modern laptop, the GT4000 is the clear winner.
- GP4000 Rating: 9/10
- GT4000 Rating: 9/10
Overall: GOOLOO GP4000 vs GOOLOO GT4000
This choice comes down to technology and environment. Both are fantastic, powerful jump starters that can save you from being stranded. They share the same brand and peak amperage, but they are built for different priorities.
You should buy the GOOLOO GP4000 if you want a reliable, tough, and powerful jump starter without paying for the latest bells and whistles. It’s a fantastic all-around unit for most people in most climates, offering great value and the ability to power other 12V accessories.
You should buy the GOOLOO GT4000 if you live where winters are harsh, or if you value modern conveniences. The super-fast charging and clear screen make it easier to live with, and the ability to work at -40°F is a lifesaver in extreme cold. The included 100W charger adds significant value.
- Overall Rating GP4000: 8.5/10
- Overall Rating GT4000: 9.0/10
FAQs for GOOLOO GP4000 vs GOOLOO GT4000
Will these start my V8 truck?
Yes, both have 4000 peak amps and are rated for large gas and diesel engines up to 10.0L. The GT4000 is even rated for gas engines up to 12.0L. They should have no problem starting most consumer trucks and SUVs.
Which one is better for very cold winters?
The GOOLOO GT4000 is far superior for extreme cold. Its pre-heating technology allows it to function in temperatures as low as -40°F, whereas the GP4000 is rated down to -4°F.
Can I charge my MacBook or other USB-C laptop?
The GT4000 is the best choice for this. Its 100W USB-C output can fast-charge most modern laptops. The GP4000’s USB ports are better suited for phones, tablets, and smaller devices.
Are they difficult to use?
No, both are designed for anyone to use. They feature smart cables with built-in safety protections against sparks and incorrect connections. The GT4000’s large screen makes it slightly more intuitive.
How often do I need to charge them?
GOOLOO recommends charging the GP4000 every 2-3 months to maintain battery health. This is good practice for both models. The GT4000’s fast charging makes this task much quicker.
Which one offers better long-term value?
It depends on your needs. The GP4000 offers excellent value as a powerful, durable, and reliable workhorse. The GT4000 costs more, but its premium features like ultra-fast charging, a superior screen, and extreme cold capability provide a different kind of value through convenience and enhanced performance.
What other safety accessories should I have in my car?
A good jump starter handles power emergencies, but for on-road incidents, a reliable dash cam is essential. It provides a video record for insurance claims or disputes. If you’re considering one, see our hands-on review of two popular mirror cams in our WOLFBOX G850 vs. G900: My Honest Take article.
