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NOCO

NOCO Boost X GBX55: 1750A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 7.5L Gas and 5.0L Diesel Engines | Spark-Proof & Reverse Polarity Protection, For Car, Truck, Motorcycle, SUV, Boat, ATV, RV, up to 7.5L Gas & 5.0L Diesel

  • Based on 4,324 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Aug 17
Order within 16 hours and 10 minutes
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Features

  • X FOR EXTREME A new class of lithium jump starters. Rated at 1,750 amps for powerful starts on gas engines up to 7.5L and diesel engines up to 5.0L - built for extreme performance.
  • ULTRASAFE 2.0 Upgraded spark-proof and reverse polarity protection with enhanced thermal efficiency and power management for even safer operation and extended battery life.
  • TURBO CHARGEABLE Recharges in just 1.2 hours via USB-C Power Delivery, or gain enough power for a jump start in just 5 minutes - even from a completely depleted battery.
  • 60-SECOND TIMER Integrated 60-second timer conserves power from its high-voltage design - delivering up to 9 jump starts per charge with extreme energy at every start.
  • CHARGE EVERYTHING 60-watt USB-C Power Delivery lets you charge phones, tablets, laptops, and more. Dual-direction charging turns Boost X into a high-output portable power bank.
  • INTEGRATED LED FLASHLIGHT Precision-engineered 200-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
  • WHATS IN THE BOX GBX55 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.

Description

The GBX55 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 1,750 amps to start gas engines up to 7.5 liters and diesel engines up to 5.0 liters. Featuring our upgraded UltraSafe 2.0 technology, it offers spark-proof connections and reverse polarity protection, now with enhanced thermal efficiency and power management for even greater safety and battery life. Designed with a high-voltage output system, the GBX55 includes an integrated 60-second timer to conserve energy—delivering up to 9 jump starts per charge with maximum power on every start. Even if completely depleted, it can gain enough power for a jump start in just 5 minutes or fully recharge in only 1.2 hours via USB-C Power Delivery. A 60-watt USB-C port provides both input and output, turning Boost X into a high-performance power bank for fast charging phones, tablets, laptops, and other USB-C devices. A precision-engineered 200-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX55 jump starter comes complete with heavy-duty jumper clamps, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year limited warranty and proudly engineered in the USA. Whether you’re looking for a car jump starter, battery jump box, jumper pack, power pack jump starter, or a reliable jump starter battery pack to keep in your glovebox, the GBX55 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.

Brand: NOCO


Battery Cell Composition: Lithium


Voltage: 12 volts


Product Dimensions: 6.34"D x 3.94"W x 9.13"H


Vehicle Service Type: ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft


Battery Type: Lithium


Voltage: 12 volts


Compatible with Vehicle Type: ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft


Battery Capacity: 3150 milliamp_hours


Amperage: 1750 A


Peak Output Current: 1750 A


Automotive Fit Type: Universal Fit


Item Dimensions D x W x H: 6.34"D x 3.94"W x 9.13"H


Item Weight: 3.4 pounds


Specification Met: energy


Brand Name: NOCO


Manufacturer Part Number: GBX55


Manufacturer: NOCO


UPC: 046221200072


Global Trade Identification Number: 72


Unit Count: 1 Count


Included Components: 1-Year Warranty, GBX55 UltraSafe Portable Lithium Car Battery Booster Jump Starter Pack, Heavy-Duty Jumper Cable Clamps, Microfiber Storage Bag, Power Bank with 60W USB-C Power Delivery, USB-C Charging Cable


Item Type Name: Jump Starter


Model Number: GBX55


Manufacturer Warranty Description: 1 Year Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Very please with my purchase
1. Functionality: Works very well for my use. So far, I've used it twice on my 2012 Honda Civic when the temp was -10F and my car wouldn't start. Plug it in, light was chasing, started the engine, boom, works like a charm. 2. Jump Capability: Since I've only used it twice, and on my 2012 Civic, small car, I don't really know how well it works with SUVs & Trucks, but I would hope it work. Will update later if I use it to help out friend's cars. 3. Battery Life: Fully charged, used it twice within two months, drained the battery to half or so, if I remembered correctly. So, I would say you could use it to jump start about 4-5 small cars. Not sure about bigger cars. 4. Ease of use: VERY VERY easy to use. Self-explanatory. Make sure you read up on it or watch video on YouTube on how it work, especially if the battery is completely dead and the light is not chasing and you have to use the "Override" mode. 5. Compactness: VERY VERY compact. I put in my work backpack and bring it with my to work every day in case my car or a friend/coworker's car broke down due to battery drain or something. Or in the sever cold weather of -10F or below and car doesn't start. Overall, I would say it's very useful. Choose your own model and go down if you have to to save money. I bought the NOCO Boost X GBX55 1750A 12V model because I want it to be at least strong enough for my Tundra. ... show more
Reviewed in the United States on March 9, 2025 by Yee
    • High quality.
Great product. I use this jumper professionally as a mechanic and I can jump several completely dead vehicles with this jumper on 1 charge. I had one for 4 years before needing to buy another one and I’m not mad about it cause I use it almost every day !
Reviewed in the United States on July 17, 2026 by Julia pezet
    • DEAD after 18 months see update!!!!
Review Image by David
I purchased this is Dec of 2023. Every six months or so I fully charged it. Used it twice. Now it is compltely DEAD> willl not take a charge, will not power on. I have attached a pic of a charger I use that lets me know how many watts are being drawn when plugged in. This will not light up. MEaning there is NO watts drawn. Great company. I wrote them and they replaced it even though it was out of the warranty period! Thank you Noco!!!!!! ... show more
Reviewed in the United States on March 28, 2026 by David
    • If there were more stars to give it, I would.
Back Ground: I bought this yesterday because I had a car with a battery so dead, not even the warning alarms sounded when I got in. It had been dead for a couple of months. Now, I have a regular jumper which is a Li-Ion battery in a case. I had hooked it up, and let it sit for a minute. No Luck. Tried a long time charger, no luck. Damn, then I recalled my sister who lives in the next town over had a jumper she swore. I called, she came over. At first we did have to recharge her jumper, and it took all of like 5 minutes, and we go out to the car, hook it up. She looks at her watch and says Wait one minute. Then she tells me to go start the car. I am like "You're joking me?" Nope, so I got in the car, (still no sounds) put the key in, (Still no sounds) and then I turn the key. It was like that battery had never been dead. Instant on, everything as the engine rolled over and started on the first turn of the key. Now that alone is worthy of praise but then I asked her "how long do I need to keep the car running, she "I don't, I only to jump once in a while." So the Next morning I come out, and go to the car and guess what. It still started like it was never dead. Two other jumper boxes failed completely to even get the warning bells and dashboard to light up. This one, jumped the car and it runs like it near had a bad battery. Ergo, while I didn't use my box (as I didn't one) I used hers, and she has had for a couple of years and it has never failed her. Also a friend of hers, who originally owned it, gave it to her and he bought the one that can Jump Start a dead diesel engine battery. Note: There are more jumpers all over the place, even by this company, so if you have a bigger vehicle, check the numbers and get one for your car or bigger. I have seen Tow Truck Drivers carry a similar one, and it jumped a Chrysler 200 that has been dead for months due the electrical short that kept draining. Not Cheap, but also with that kind reliability, you don't have to worry about being stuck in the middle of nowwhere, and as bonus it will jump 20 cars on a single full charging itself. ... show more
Reviewed in the United States on March 21, 2026 by Padremellyrn
    • Best Truck jump starter
The NOCO Boost X GBX55 is an outstanding portable jump starter that combines impressive power, compact size, and excellent build quality into one reliable package. It is powerful enough to start larger gasoline and diesel engines while still being small enough to store easily in a vehicle, toolbox, or emergency kit. One of the biggest strengths of the GBX55 is how fast and dependable it performs. Even on weak or nearly dead batteries, the jump starter delivers quick starts without hesitation. The UltraSafe technology adds confidence by protecting against reverse polarity, sparks, and incorrect connections, making it very user-friendly even for people who are not mechanically experienced. The USB-C charging capability is another major upgrade compared to older jump starters. It charges quickly and can also be used as a portable power bank for phones, tablets, and other electronics, which makes it even more useful during road trips or emergencies. Battery life is excellent, and the unit holds a charge well during long periods of storage. Build quality feels premium throughout. The clamps are sturdy, the housing feels rugged, and the overall design is compact without sacrificing performance. The integrated flashlight is also a helpful addition for nighttime roadside situations. Compared to traditional bulky jump packs, the NOCO Boost X GBX55 is far more convenient and modern while still delivering serious starting power. It provides peace of mind knowing a reliable backup starter is always available when needed. Overall, the NOCO Boost X GBX55 is an excellent investment for anyone wanting a dependable, portable jump starter. It is powerful, easy to use, compact, and packed with useful features, making it one of the best options available for vehicle emergency preparedness. ... show more
Reviewed in the United States on May 25, 2026 by Shawn
    • Premium price - NOT Premium performance. Don't waste your money!
This unit is rugged and well built, as it should be for the premium price. I've had my GBX55 for over 1.5 years and have never needed to use it, twice I've checked on the booster and found that it was half way discharged, and would put it on charge to top off. Well today the car battery was almost dead and my GBX55 let me down. It was again at half charge and would not jump the battery and when I put it on to charge, it displayed an error related to the charging circuit. Hat's off to customer service who responded quickly to my emails and being out of warranty, they offered me a 35% discount on my purchase of a new booster. But I had to respectfully decline, I never had to use my booster and it let me down when I needed it. I have no trust in NOCO boosters, what's to say that the next booster will not let me down in the same way, just when you need it. At the premium price they charge, I would have expected better life and reliability. I should have bought another Schumacher; the one I have currently, I've had for around 7 years and has always held its charge and has never let me down. It's bigger and bulky, but I'm sure they make a comparable one to the GBX55. And for the price, the TOPDON JS3000 looks to be a better value for the money!! ... show more
Reviewed in the United States on February 6, 2026 by Michael Wilder
    • Great product
One of the best purchases I’ve made. Certainly recommended. Works well and is easy to use.
Reviewed in the United States on June 18, 2026 by John-Michael
    • Works nicely 😁
Bought to replace an outdated heavy and bulky jump starter. While I haven't used yet, I fully intend to be in a predictament one day to help someone else too. I'm an upper echelon review writer on Walmart and I can't help but be brutally honest. It's what everyone deserves, right!? 😉 Originally I was going to return the device because it was supposed to have a built-in air compressor/inflator. When I found out it didn't I tried to return and Amazon knocked off $40 instantly. I pondered over it for awhile and decided to keep based off a mutual friend's opinion on Noco products. ... show more
Reviewed in the United States on April 1, 2026 by DP

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