NOCO 4250A Portable Jump Starter for 10.0L Gas/8.0L Diesel Engines

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NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

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5,783 ratings

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Brand	NOCO
Battery cell composition	Lithium Ion
Voltage	12 Volts
Product Dimensions	20.8D x 34.3W x 12.3H Centimetres
Vehicle service type	ATV, Lawn Mower, Motorcycle, Passenger Car, RV, Truck, UTV, Van, Watercraft

About this item

X FOR EXTREME — A new class of lithium jump starters. Rated at 4,250 amps for powerful starts on gas engines up to 10.0L and diesel engines up to 8.0L - 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 2.7 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 8 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 500-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
WHAT’S IN THE BOX — GBX155 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.

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This item: NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

$554.77

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NOCO GBC104 Boost X EVA Protection Case for GBX155 UltraSafe Lithium Jump Starters

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NOCO Boost GB150: 3000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 9.0L Gas and 7.0L Diesel Engines

$384.95

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Established in 1914, NOCO designs and creates premium consumer battery chargers, jump starters, lithium batteries, and a wide range of accessories. Through these world-class offerings, we have effectively set a new standard in design, performance, and safety. We aim to make exceptional products that provide consumers with the ultimate experience. We challenge conventionality and remain vigilant to the highest quality standards. We are NOCO.

From the manufacturer

NOCO Boost X GBX55 1750A 12V UltraSafe Lithium Jump Starter, Up To 7.5L Gas & 5.0L Diesel Engines

	GBX155	GBX45	GBX55	GBX75
Customer Reviews	5,783	12,731	3,625	4,783
Amps	4250 Amps	1250 Amps	1750 Amps	2500 Amps
Gas Engines	Up To 10.0 Liters	Up To 6.5 Liters	Up To 7.5 Liters	Up To 8.5 Liters
Diesel Engines	Up To 8.0 Liters	Up To 4.0 Liters	Up To 5.0 Liters	Up To 6.5 Liters
LED Lumens	500 Lumens	100 Lumens	200 Lumens	400 Lumens
12V Power Port	✔	✘	✘	✔

Product description

The GBX155 Boost X is a new class of portable lithium jump starters—engineered for extreme performance and rated at 4,250 amps to start gas engines up to 10.0 liters and diesel engines up to 8.0 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 GBX155 includes an integrated 60-second timer to conserve energy—delivering up to 8 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 2.7 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 500-lumen LED flashlight features seven modes, including SOS and strobe, to light up dark workspaces or help in roadside emergencies. The GBX155 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 GBX155 delivers unmatched performance, trusted durability, and peace of mind—on the road, off the grid, or wherever your next adventure takes you.

Product information

Technical Details

Manufacturer	‎NOCO
Place of Business	‎NOCO, 30339 Diamond Parkway, #102, Glenwillow, OH 44139 USA
Brand	‎NOCO
Model	‎GBX155
Product Dimensions	‎20.78 x 12.29 x 34.32 cm; 3.18 kg
Item model number	‎GBX155
Batteries	‎1 Lithium Ion batteries required.
Exterior	‎Machined
Manufacturer part number	‎GBX155
OEM part number	‎GBX155
Position	‎Unknown
Bulb type	‎LED
Special features	‎4250A 12V Portable Lithium Car Battery Jump Starter Power Pack, 500 Lumen LED Flashlight with Multiple Modes, including SOS., 60-Watt USB-C Power Delivery Technology, Portable Power Bank for USB Devices, Reverse Polarity and Spark-Proof Protection
Amperage	‎4250 Amps
Voltage	‎12 Volts
Item Weight	‎3.18 kg
Country of origin	‎China

Additional Information

ASIN	B08WZFPXFM
Customer Reviews	5,783 ratings 4.3 out of 5 stars
�鶹�� Rank	#2,498 in Automotive (See Top 100 in Automotive) #33 in Jump Starters
Date First Available	Feb. 19 2021

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Customers say

Customers like the functionality, power, and compact design of the jump starter. They mention it works right away, boosts almost anything, and can be stored easily in a vehicle for future use. Customers also appreciate the ease of use. However, some customers have reported that the battery life is poor. Opinions are mixed on the charging speed and build quality.

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Functionality Power Compact Ease of use Charging speed Build quality Battery life

64 customers mention "Functionality"47 positive17 negative

Customers like the functionality of the product. They mention it works great for the first year, fires no issues, and starts just about everything unless the battery is finished. Some say it's useful and handy for truckers.

"Works great! Boosted a combine with it." Read more

"Great product, would buy again..." Read more

"...I had to use mine for the first time and it won't work. All that money and the return window had closed. NOT impressed." Read more

"absolute garbage" Read more

33 customers mention "Power"33 positive0 negative

Customers are satisfied with the power of the product. They mention it boosts almost anything, from cars to construction equipment. Customers also say it produces fast boost for any vehicle, personal or commercial. They also say it's extremely efficient when it's fully charged.

"Very happy with it. Lots of power...." Read more

"...hundreds of trucks and have never seen anything this compact and powerful, i highly recommend it" Read more

"Amazing quality. The booster pack is so simple, extremely powerful, safe,and to use...." Read more

"This booster pack is great, have started my Peterbilt and farm tractor with this." Read more

13 customers mention "Compact"11 positive2 negative

Customers like the compact design of the jump starter. They mention it's super portable, can be stored easily in a vehicle for future use when required, and is handy to carry on the road with you. Customers also say the specs are great.

"...and it starts just about everything unless battery is finished and super portable and I leave it on charge in my office for the next emergency" Read more

"...Super compact for how powerful they are! I'm repurposing my monster 0/2 guage jumper cables back to the welder from whence they came." Read more

"Use for a peace of mind emergency battery booster . Compact and easy to use when required ...." Read more

"...and have boosted hundreds of trucks and have never seen anything this compact and powerful, i highly recommend it" Read more

7 customers mention "Ease of use"7 positive0 negative

Customers like the ease of use of the jump starter. They mention it's compact, simple, and not bulky.

"It’s small and light weight. Easy to use" Read more

"Amazing quality. The booster pack is so simple, extremely powerful, safe,and to use...." Read more

"...Easy for anyone to use and very safe. And you don't need to ask a stranger for help! Expensive, but worth the money." Read more

"...So much easier to use this then rolling out the wheeled charger then hooking up the ectension cord for it...." Read more

12 customers mention "Charging speed"4 positive8 negative

Customers have mixed opinions about the charging speed of the jump starter. Some mention the fast charge is 2.7 hours, while others say it takes hours to charge and only provides a few charges.

"What they don’t make clear. This device is charged by a usb-c charger-not included...." Read more

"...Only thing It doesn't have is a Volt read out. Type C charging is fast. dead to full within an hour n half from an inverter on 12v input" Read more

"...I was not real happy with it at all to start with. It was fast to discharge, extremely slow to charge. Well over a day sometimes 2 or 3 to charge...." Read more

"...You Tube review did not lie. It does take a while to charge it up, but we are very pleased it is able to boost diesel trucks in -10C weather." Read more

11 customers mention "Build quality"7 positive4 negative

Customers have mixed opinions about the build quality of the jump starter. Some mention it seems solid and has no problem boosting the few things they have tried. However, others say it's low quality and punches above its weight.

"Nice and heavy very well built" Read more

"There are not the correct charge cord fir in house charging unit. This not good 👎...&��ܴǳ�; Read more

"Product seems solid and has no problem boosting the few things I have tried...." Read more

"Very strong booster pack..." Read more

16 customers mention "Battery life"0 positive16 negative

Customers are dissatisfied with the battery life of the jump starter. They mention it runs out of charge after just two hours of charging their laptop batteries. Some say it doesn't provide many charges and the batteries are completely dead.

"Used this only 5 times and will no longer hold a charge. Worked great the 1st few times - started 2 diesel trucks in -20C last winter...." Read more

"...we left it on charge a 4 code would flash telling us that the battery was no Good, Noco direct has been good to deal with except there is no..." Read more

"Does not hold a full boosting charge for very long" Read more

"...a few years back it worked great for the first year .Then the battery got weak and now no long holds a charge ...." Read more

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Top reviews from Canada

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IBR
Very strong booster pack
Reviewed in Canada on January 27, 2025
Verified Purchase

Amazing quality.
The booster pack is so simple, extremely powerful, safe,and to use.

My diesel truck's battery dead and it was -30.

The booster pack cranked the engine over with ease.

Excellent investment.

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Heavy D
Great product, would buy again
Reviewed in Canada on April 17, 2025
Verified Purchase
This booster pack is great, have started my Peterbilt and farm tractor with this.

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Brendan
Powerful
Reviewed in Canada on March 29, 2025
Verified Purchase
Works great! Boosted a combine with it.

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James
Disappointingly expensive
Reviewed in Canada on March 2, 2025
Verified Purchase
I've used motorcraft or other boosters for years. Cold weather, used as remote battery packs for powering pumps etc

Figured if pay a premium for this POS.

90% of the time when you need it, it has an issue. Too hot. Too cold. Want to power a pump? Can't do no current. Push the over ride? Won't function.

If you want something that will boost a cat because you haven't the money for a new battery and it dies in nice warm weather and everything is perfect but you can somehow afford this expensive atrocity. It's perfect.

But if you're someone who likes to keep it on hand in your vehicle and needs a charge pack say, when it cold out, and your batteries are frozen or it's too chilly to start, or even just as a pack to power pumps or lights on site. Not worth is. 80% of the last times I've needed this it's failed me and it's brand new. I still end up using my 1400amp motorcraft one.

Don't recommend

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2 people found this helpful

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George B.
Worth the money spent
Reviewed in Canada on June 15, 2025
Verified Purchase
Best thing ever bought

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subdude
REALLY GREAT BOOSTER PACK
Reviewed in Canada on April 25, 2025
Verified Purchase
stared 6.2 ltr truck when tow truck was unable to. Driver was not the best example!
Light is greAT, YOU NEED TO CASE AND KEEP IT CHARGER AND OUT OF SIGHT, THIS THING WILL RUN AWAY WHEN YOUR NOT LOOKING, JUST SAYING.
i RECOMMEND THIS ITEM.

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FAIRWAY SPECIALTY VEHICLES
DID NOT WORK OUT OF THE BOX
Reviewed in Canada on December 23, 2022
Verified Purchase
UPDATE... NOCO WAS ABLE TO GET US A BOOSTER THAT WORKS, AND AGAIN NOCO WAS GOOD TO DEAL WITH. WAS A INCONVENIENCE IN THE BEGINNING FOR SURE BUT AT LEAST WE KNOW THERE WARRANTY DEPARTMENT IS GOOD TO DEAL WITH, THANKS APRIL IN WARRANTY FOR THE HELP!!

so we ordered this booster, and out of the box it would not charge past 2 of the 4 bars, and if we left it on charge a 4 code would flash telling us that the battery was no Good, Noco direct has been good to deal with except there is no replacement in stock right now and will not come in until a unknown time in January plus shipping time to us sooooo we purchased a booster that we can not use, when i originally went to deal with amazon direct it sends you to deal with the supplier direct so there is nothing i can do, customer service with Noco has been good to deal with but the point is we paid a good amount for something that does not work, it would have been great if we just could have received a replacement from �鶹�� as up here in Manitoba Canada last week it was -31 so it would have been very useful...

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8 people found this helpful

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Don
Starts transport trucks very good quality
Reviewed in Canada on December 13, 2024
Verified Purchase
I purchased this for work I manage a fleet of large trucks and it starts just about everything unless battery is finished and super portable and I leave it on charge in my office for the next emergency

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Kent
��ä�ٳٱ��
Reviewed in Sweden on February 9, 2024
Verified Purchase

Fungerade kanon

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Peter
Its carries alot of punch and starts anything with a flat battery.
Reviewed in Australia on September 3, 2023
Verified Purchase
I bought two of these as I am a owner of a large number of classic cars as well as some lager vehicles like trucks and tractors.
I was going to go down the professional gear mechanics use but $4500 a units, and they are huge, was too much so I decided to take a punt on these.
As mentioned previous they are great, have started all sorts of equipment from cars to tractors to 13T trucks.
I am just about to purchase some more around the 3000A mark and keep the big GBX155 in my workshops.

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Dario
Potente, sicuro e versatile: un avviatore professionale in formato compatto
Reviewed in Italy on June 24, 2025
Verified Purchase
Ho acquistato il NOCO Boost X GBX155 per avere un avviatore di emergenza affidabile sia per auto che per furgoni diesel. L’ho testato su una batteria completamente scarica di un 3.0 turbodiesel: in pochi secondi ha avviato il motore senza alcuno sforzo.

La potenza da 4250A è reale, e si percepisce dalla velocità con cui eroga corrente. Oltre alla funzione di avviamento, può essere usato anche come power bank per ricaricare smartphone, tablet o altri dispositivi grazie all’uscita USB-C PD. L’interfaccia è semplice e intuitiva, con led ben visibili anche in pieno sole.

Punti di forza:
• Potenza elevatissima, adatta anche a motori diesel di grossa cilindrata
• Avviamento rapido anche con batteria completamente morta
• Funzione torcia e power bank USB-C molto utili
• Cavi robusti e morsetti di qualità, con protezione intelligente contro inversione di polarità

Unico difetto:
Non è economico, ma per chi cerca un prodotto professionale e vuole stare tranquillo in ogni situazione, è un acquisto che si ripaga da solo al primo uso.

Conclusione:
Uno strumento indispensabile per chi lavora con veicoli o semplicemente vuole sicurezza in auto. Qualità costruttiva eccellente, potenza reale e facilità d’uso. Lo consiglio senza riserve e lo ricomprerei subito.

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Andrew Roberts
Impressive performance
Reviewed in the United Kingdom on October 6, 2024
Verified Purchase
Bought this for an old Jag 4.2, super impressed how well it spins the engine over, should start anything that’s capable of starting. Seems to have plenty of reserves for quite a few attempts

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ssisnowpower
Great Power in a Compact Package
Reviewed in the United States on July 31, 2025
Verified Purchase
I’ve used the NOCO Boost X GBX155 a few times now, and it works exactly as advertised. It started my diesel truck with no problem. Super easy to use, charges fast, and I love that it also works as a power bank. The build quality feels solid, and it's small enough to keep in the truck without taking up space. If you need serious jump-start power, this one is worth it.

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NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

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5.0 out of 5 stars ��ä�ٳٱ������

5.0 out of 5 stars Its carries alot of punch and starts anything with a flat battery.

5.0 out of 5 stars Potente, sicuro e versatile: un avviatore professionale in formato compatto

5.0 out of 5 stars Impressive performance

5.0 out of 5 stars Great Power in a Compact Package

Product summary presents key product information Keyboard shortcut Shift + Alt + opt + D

Product Summary: NOCO Boost X GBX155: 4250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 10.0L Gas and 8.0L Diesel Engines

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��ä�ٳٱ��

Its carries alot of punch and starts anything with a flat battery.

Potente, sicuro e versatile: un avviatore professionale in formato compatto

Impressive performance

Great Power in a Compact Package

Product summary presents key product information

Keyboard shortcut Shift + Alt + opt + D