Product Features and Description
The GOOLOO GT4000S Jump Starter is designed to bring powerful solutions to the table with its impressive 4000 Amp capabilities. This portable car battery charger is ideal for those unexpected moments when your vehicle’s battery decides to act up. Whether you’re in freezing weather or stuck on a deserted road, its ability to jump-start 10L diesel and 12L gas engines makes it a staple in emergencies.
Beyond bailing you out in a jam, this nifty device serves as a reliable companion for camping trips or long road adventures, doubling as a 100W fast-charging power bank for electronics.
Readers can expect an in-depth description of the product’s features, user opinions, reviews, videos, comparisons, and attractive market offers for the product.

- Rapid Charging Capabilities: The ONE & ONLY 100W Fast-Charging Car Battery Jump Starter is an impressive device, requiring only 1.2 hours to fully charge from 0% to 100%. Even a brief 5-minute charge is sufficient to jump-start a car, making it an essential tool for emergencies. This product comes with a 100W car charger in the package and supports fast charging through its type-c port, ensuring compatibility with your own chargers.
- Versatile Charging for Laptops: This device can charge your MacBook and other laptops with up to 100W speed, matching the original adaptor’s efficiency through the Type-C port. The jump starter also serves as a portable power source for your devices.
- Compact Yet Powerful Jump Starter: With 4000A peak cranking power, the Gooloo GT4000S is capable of starting nearly all 12-volt vehicle engines, up to 12.0L gasoline or 10.0L diesel, within seconds. Its compact size and powerful output make it a superior choice over traditional car jumper cables, fitting perfectly for vehicles like RVs, motorcycles, SUVs, tractors, and boats.
- Enhanced Safety and Ease of Use: The device features a 3.2-inch LED screen, providing clear status updates for intuitive operation. Built-in with 10 kinds of protection technologies, it ensures safer jump-starting without concerns of misoperation or sparks, offering peace of mind for users.
- Extended Stand-by Time: With a remarkable 24-month stand-by time, regular charging is not required for the GT4000S. The incorporated protection technologies not only enhance safety but also prolong the product’s lifespan, making it a reliable investment.
- More Than Just a Jump Starter: Beyond its primary function, the GOOLOO GT4000S serves as a portable battery bank with three USB ports and a 400-lumen flashlight featuring SOS, SPOTLIGHT, and STROBE modes. Additionally, it includes a 15 volt 10 Amps port, suitable for powering devices like tire inflators and inverters.
- Comprehensive Package Contents: The package includes the Gooloo 4000A Portable Car Jump Starter Battery Pack GT4000S, Heavy Duty Jumper Cables, SC 100W Car Charger, USB to Type-C Cable, Type-C to Type-C Cable, Cigarette Lighter Adapter, Storage Bag, and User Manual, ensuring you have everything needed for optimal usage.

For years, GOOLOO has stood as a leader in the field of jump-starter research and manufacturing. Their commitment to delivering high-quality products ensures customer satisfaction. Among their impressive lineup, the Gooloo GT4000S shines with its outstanding performance in temperatures ranging from -20℃ to 60℃. This robust capability makes it a reliable companion for drivers, especially as colder weather approaches, providing peace of mind regardless of the season.
In addition to their product excellence, GOOLOO emphasizes the importance of customer interaction and feedback. The brand is dedicated to offering superior service, considering it as crucial as their product quality. This philosophy underscores their value for customer ideas and suggestions, reflecting a company that cares about continuous improvement. The GT4000S jump starter isn’t just a tool but a thoughtful gift idea for family or friends, enhancing the driving experience by being a trusted roadside companion.


The stars speak of…
Opinions about this product were divided in such a proportion among the buyers.
Don’t be fooled by it’s small size compared to conventional jump boxes, this has more power than many four times it weight. Quick to charge, with the convenient screen showing percentage, it’s ready for multiple uses before needing recharge. Removable cables and it’s light weight make it easy to transport from vehicle to vehicle and into the house for charging.
Had an almost completely dead battery on a 5.3L V8. This thing (at 100% charge) would not even crank it. My much smaller NOCO started it on the second try. Also, the clamps on this thing have protective covers around the jaws that make it difficult to attach to side posts. The display is nice, but it doesn’t deliver the cranking amps promised, so what good is it? Not recommended.
Available Product Variations
GOOLOO GT4000S Jump Starter 4000A for 10L Diesel/12L Gas Engines, 100W Fast-Charging Portable Power Bank, Yellow
- Brand: GOOLOO
- Item Weight: 2.31 Pounds
- Amperage: 4000 Amps
- Peak Output Current: 4000 Amps
- Specification Met: UL, Overcharge, Overload, Short-circuit Protection
- Manufacturer: GOOLOO
- Vehicle Fitment Code: [Tra, Motorcycle, Passenger Car, Truck, RVs, pickup trucks, SUVs, tractors, boats]
- Model: 4000A Car Battery Jump Starter
- Product Dimensions: 9.05 x 3.93 x 2.12 inches
- Item model number: GT4000S
- Batteries: 1 Lithium Polymer batteries required. (included)
- Manufacturer Part Number: GT4000S
- Bulb Type: LED(Stable/Strobe/SOS)
- Special Features: √Jump start vehicles up to 12L Gas/10L Diesel engines,including Hybrid cars., √400 lumen LED flashlight with 3 modes(SOS, SPOTLIGHT, STROBE)., √3.2-inch screen displays real-time battery status., √4000 Amps peak current cranking power., √Powerful & handy portable jump starter for car battery., √24 Months standby time., √Battery Life: 1000+ Cycles., √A 15 volt 10A port for powering any 15V or 12V DC devices, such asw air compressor, car fridge, car vacuum cleaner, and more., √100W max two-way super-fast charging supported. Fully charge in about 1.2 hours., √IP65 water-resistant & 94V0 flame retardant, √Large battery capacity.
- ASIN: B0C5M79JJC
- Best Sellers Rank: #675 in Automotive (See Top 100 in Automotive) #37 in Jump Starters
- Date First Available: May 20, 2023
- Features: Battery Cell Composition Lithium Polymer, Voltage 12 Volts, Vehicle Service Type Passenger Car, Tra, Motorcycle, Truck, Battery Capacity 24000 Milliamp Hours
Insights & Inquiries: Getting to the Heart of Your Questions
What types of vehicles can this jump starter support?This versatile jump starter can assist a wide range of vehicles, including cars, trucks, buses, motorcycles, scooters, lawn mowers, ATVs, tractors, snowmobiles, RVs, vans, and even watercraft. It’s powerful enough to jump-start engines up to 12L for gasoline and 10L for diesel, making it an ideal choice for most vehicle owners.
How does the jump starter perform under extreme weather conditions?The GOOLOO jump starter is designed to function optimally in temperatures ranging from -20℃ to 60℃. So whether you’re dealing with the harsh cold of winter or the sweltering heat of summer, you can rely on this device to perform when you need it most.
What kind of battery life can I expect from this device?The GT4000S jump starter boasts an impressive battery life with 1000+ cycles, meaning you can utilize it repeatedly before there’s any significant degradation in performance. Additionally, its 24 months of standby time ensures it will be ready whenever called upon.
How does the two-way fast charging feature work?The device supports 100W max two-way super-fast charging, enabling you to recharge the unit fully in about 1.2 hours. This feature is particularly handy if you’re often on the go and need a quick recharge between uses. Moreover, it can power up your 15V or 12V DC devices, providing a versatile energy solution.
Is this jump starter compact enough for travel?With dimensions of 9.05″D x 3.93″W x 2.12″H and a weight of 2.31 pounds, the jump starter is both compact and lightweight. Its portable design makes it easy to store in your vehicle, ensuring that you always have emergency power at hand during your travels.
What safety features does it include?Safety is paramount, and this jump starter includes several key features to ensure user security. It meets CE and FCC specifications and offers an IP65 water-resistant rating, combined with 94V0 flame retardant material. Additionally, the built-in LED flashlight with SOS, spotlight, and strobe modes adds a layer of safety in roadside emergencies.
How can I view the current battery status of the device?The jump starter is equipped with a 3.2-inch screen that provides real-time battery status updates. This clear display allows you to easily monitor the device’s battery level and ensures you’re never caught off guard by a low charge.


Jerry –
Started a 8 Cyl 6.6 L Duramax, with both batteries disconected
I decided to disconnect both batteries from my 8 Cyl 6.6 L Duramax to test the GT4000s out. First try, the starter clicked and then dash went dark. Rechecked the connections. The truck started on the second try and even ran about 5 seconds off the pack before I shut it down. 4 stars because even though it worked, It felt like it was pushing its upper limit and unsure how it will hold up over time. I did find the cable length to be ok but could be a little longer. I ran a small portable air compressor briefly from the cigarette plug adapter, it worked but drained the battery quickly.
Lou FXDB –
Just buy it!
This jump pack is no joke. Used it for the past couple of months and it’ll jump start John Deere 8Rs like nothing. It does good as long as the battery isn’t completely dead on the big 9 liter tractors. It’ll jump at least 3 tractors on one full charge. This out performs my coworkers Noco GB150 3000 amp. YouTube the project farm channel that compares different jump packs. This is one that they test and the biggest bang for the buck. I definitely recommend it!
Tater –
top tier buy!
Must buy in this price range! Will jump a completely dead battery. More importantly Project farm approved!
Frankie –
Great
Excellent Product
S@amy B –
Happy after almost a year
Excelente performance
michael doherty –
Works like a champ right out of the box
This thing just works. I purchased this particular unit because all of our vehicles are diesel. And according to the listing details it should be able to accommodate jump starting each of those vehicles if needed including my 6.7 liter turbo diesel ford f 350. So here is the story: I moved our 2017 land rover discovery td6 out of the garage so I could paint the garage walls. Six hours later when I went to move the vehicle back into the garage it wouldn’t start. I don’t own a pair of jumper cables. This was on a Saturday. So I went on Amazon and ordered this Gooloo jump starter. It arrived overnight at 6:30 am on Sunday morning about 70 percent charged. Hooked it up to my SUV and it immediately cranked right up and started. Went to auto zone and they verified the 7 year old original battery was bad. So an hour later, new battery installed and I am a tru believer in this item. Carry it with me everywhere now.
xwossiex –
It works
10 out of 10 recommend It works perfectly, jumpstarted our car a couple of times no complaints.
bubba –
get one
this has come in clutch several times to help other people out of a bind. today, it worked to jump off an F550 diesel with two battery system. plenty of power. holds a charge well.
Lukas –
Great Product And Works Great
This is an essential item to have in my truck (F150) at all times. Works great and very quick and easy to use.
Elijah Dowdell –
Great little Jump Starter!!!
I love this Jump Starter!! Ease to use!! Starts in seconds and light weight. It more compact the the big balky ones and has power like the big ones. A most have in any garage or vehicle emergency kits.
Ricardo –
Doesn’t charge
Reached out to customer support since it came with a card to reach out to them in case there was something wrong with it.. they did not respond so I will be returning this item for lack of customer support.. if they reach out before I drop it off at UPS I will update this review accordingly
Bill P. –
Great product
Works great and holds charge for a long time
Amazon Customer –
Dead after 4 months!
After 100% charge 4 months ago, I find it dead this morning when I needed it… now it won’t even charge… hoping company will replace it, as I’ve emailed them… their phone number does not work!
Ryan Williams –
Won’t need to purchase anything else
I have used this to jump start my vehicle along with my neighbors vehicle on several occasions. He has a Silverado that had been sitting out for a little while. He attempted to start it and use a different battery pack. I was able to set this up within a minute and start this truck without issue with this still having a decent charge. Like that it gives you a digits display of how much percentage is left. It is slightly heavy but well worth carrying just in case. The bag it comes in is very convenient and holds all of the extra items that come with it and is easier to carry it around. I don’t imagine I would need to purchase another one but if I did I would definitely get another one. Great product at a great price.
William Wyllie –
Yes please
It worked great, once. Died after second charging. Was so disappointed because I liked it so much was planning on buying more for gifts. After I used it one time I plugged it up and charge it to 100% and it died never seen anything on screen again. The kicker is I had time on warranty to get it returned but didn’t realize I was in a rush so I missed it by a week. I believe they are sending me a replacement now even though I was a little out of the warranty picture so I’m very happy with it again.
Chess –
Starts truck engines and all smaller engines
I haven’t tried starting a diesel, but a standard V8 starts up. So far after 4 months very pleased with the unit. Makes for a great USB charger when camping too.
Erin McKim –
For our boat
We love this so much, always have it on the boat with us just in case! And it has come in handy to use when others have issues on the water!
Amazon Customer –
Most amazing thing ever. 🙂
This is the coolest thing I have ever bought off of Amazon. When it gets cold, out Jeep decides not to turn over. Every single time, I just pop it out of the back, plug it in, you don’t push anything and start it up. It’s 100% and it goes down 2% on every jump with a Jeep. So you get so many jumps without having to do anything. And you can keep it back there forever it seems, without ever having to charge it up, which takes like 1 plug in the wall for a few hours. I could not say anything better about this. Get it for anybody that you don’t want to ever have to ask someone else for a jump.
Tomi Deng –
this item only has plactic bag !
this item brings with the car for long time , it only has the plastic bag , but it has lithium battery ! so terrible for that !
Mauricio Escobar –
Not a good jumper pack
I got this jumper pack because I owned a gp200 and it last me for 6 year or more with no problem and I put it to the test with diesel engines but jumper pack gt4000s is no good I’m disappointed 4 crankshaft and you have to wait 10 to 15 min for it to restart and if you do roadside service like I do, this will make you look bad like it did to me. I mean it goes to error mode trying to start a atv
larry –
EZ Jump start
I have used the jumper on a heavy duty truck, a 75hp tractor, multiple small engines (ATV, mower). Easy to use and easy to store. i bought one to carry in both of my vehicles and my work truck.
R. Ashby –
Wouldn’t start my truck
Fully charged, it wouldn’t start my truck, kind of disappointing
Ryan Mills –
As described works great
I’ve only used it once but it worked flawlessly and is made very well.
Bo Juergens –
Very useful
This charger has saved my butt more times than I can count. With so many things needing a jump or boost, this really is worth the price. I’ve used it on a large SUV, sports car, boat, riding mowers and just about anything that can benefit from its use.
Edwin H. –
FAST CHARGE!
Not used yet but still want to post this review in response to other reviews. I bought 2 units for our business. The first unit was at 76% charged. The second was 80%. You can definitely charge these with 100W USB-C chargers but you will need to have the correct rated cable and have a charger that can provide the 100W…remember that when other devices are on the same charger the charge rate per connection drops! I will update this review after real life use but wanted to post this already to rebuke the claim that 100W charging is not possible.
Ashton Oram –
Waste of money absolute trash
Hookup up to a Gator with a new battery. Cranked it over a bit and it stops into a safety mode as it detected 4 starts in ten minutes and not won’t work for ten minutes. Does not matter that it is cold out and those cranks were a second or two long. Went from 100 percent to 62 in that time, took it off an noticed no difference. Waste of $100. Do not buy. Was the best from project farm review but still not worth $20
PJ –
Powerful
Worth every penny. Easy to use and powerful. Just helped jump my diesel. Highly recommended.
jcolbs –
WORKS GREAT!
I have used it multiple times since receiving it just 2 weeks ago. Yes, I replaced the battery in the vehicle I kept having to use this jump box on. Friend of mine said that’s thing is awesome! I’m getting one
John Clark –
Good for big engines
Started my old v8 mustang first try. Lots of power. Kind of expensive and heavy but does what I wanted. Will have to see how long the battery lasts.
fpc –
Don’t plan on charging at home without buying a charger
OK, I get that most folks have a USB charger but when I buy a device to jump start a car I expect to be able to plug it in at home to charge it. And the mealy mouth language about not including one for “environmental reasons” just annoys me. Which, I guess, is obvious. Last GooLoo device I buy or recommend.
RB –
Great purchase!
Got this about two weeks ago. Just helped someone with a dead battery at Lowe’s. Worked great started the SUV right up. Temp was about 11 deg F.
Charles Hudson –
Great unit
very compact and easy to store under the frount seat I used it the 2ED day after arrival
Amazon Customer –
Great
Everything so far
Customer 4321 –
Disappointed
This is my third Gooloo jump pack, and unfortunately, I’m disappointed with its performance. The clamps aren’t strong enough, which leads to arcing and triggers an error code, rendering the unit unusable for several minutes. Additionally, it only allows for a single crank before entering safe mode, requiring another long wait before you can try again.