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NOCO

NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines

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Availability: In Stock.
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Arrives Tuesday, Mar 31
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Features

  • START DEAD BATTERIES Instantly start dead batteries with 1000 amps of peak lithium power. Up to 20 starts per charge on engines up to 6.0L gas and 3.0L diesel.
  • ULTRASAFE TECHNOLOGY Engineered with patented spark-proof and reverse polarity protection for foolproof connections to any 12V vehicle - no sparks, no wrong connections.
  • PORTABLE POWER BANK Integrated power bank delivers emergency power to smartphones, tablets, and more. Recharges in 3 hours so its ready when it matters most.
  • INTEGRATED LED FLASHLIGHT Precision-engineered 100-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
  • COMPACT YET POWERFUL High-discharge lithium technology delivers exceptional starting performance in a compact 2.5 lb form factor - perfectly sized for glove boxes and emergency kits.
  • BUILT TOUGH Rugged IP65-rated housing with rubberized over-molding protects against water, dust, and impact. Includes high-conductivity clamps for maximum energy transfer.
  • WHATS IN THE BOX GB40 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 NOCO Boost GB40 is a compact yet powerful 1000-amp lithium jump starter designed to safely jump start a dead car battery in seconds—perfect for cars, trucks, motorcycles, ATVs, boats, SUVs, vans, and more. This portable car battery jump starter delivers up to 20 jump starts on a single charge and is rated for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters. Engineered with UltraSafe Technology, it features spark-proof connections and reverse polarity protection, making it a safe and mistake- proof car battery booster for any 12-volt vehicle. It doubles as a portable USB-C power bank for charging smartphones, tablets, and other devices when it matters most, and includes an integrated 100-lumen LED flashlight with seven light modes, including SOS and emergency strobe—ideal for night use, roadside visibility, or emergencies. With an ultra-compact, rugged design, IP65-rated enclosure, and rubberized over-molded casing, this battery jump starter pack is built tough to withstand water, dust, drops, and rough handling. The GB40 includes heavy-duty jumper cables, a USB-C charging cable, and a microfiber storage bag, all backed by a 1-year warranty and proudly designed 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 GB40 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: 4.61"D x 8.19"W x 4.21"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: 2150 Milliamp Hours


Amperage: 1000 Amps


Peak Output Current: 1000 Amps


Item Dimensions D x W x H: 4.61"D x 8.19"W x 4.21"H


Item Weight: 2.4 Pounds


Specification Met: UL


Brand Name: NOCO


Manufacturer Part Number: GB40


Manufacturer: NOCO


UPC: 046221150025


Global Trade Identification Number: 25


Item Type Name: NOCO Boost Plus GB40 1000 Amp 12-Volt UltraSafe Lithium Jump Starter Box, Car Battery Booster Pack, Portable Power Bank Charger, And Jumper Cables For 6-Liter Gasoline And 3-Liter Diesel Engines


Included Components: 1-Year Limited Warranty, GB40 Portable Car Battery Jump Starter Pack, Heavy-Duty Booster Clamps, Microfiber Storage Bag, USB-C Charging Cable, User Guide for Jump Starter


Unit Count: 1.0 Count


Manufacturer Warranty Description: 1-Year Limited Warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Mar 31

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Life saver!
When it arrived I immediately charged it and then I had cause to use it 3 days after it arrived! Worked perfectly and easily and I was able to drive away... wasn't even late for my appointment. Amazing and reassuring... it will now always be in my car. I'm an alone elderly lady with a battery-killer car. Can't believe I didn't buy this sooner ... show more
Reviewed in the United States on March 10, 2026 by OxAli
    • -15 degrees Fahrenheit an jumped 3 cars in a row during blizzard of 2026!!!
The power this little unit packs is quite impressive. It holds its charge and the coldest of weather, and has the power to jump a completely dead battery ( I even tried it with out a battery at all a still worked!)its highly durable it rolls around in the trunk of my car and hasn’t gave me an issue ( I also got the case for it) But they should have a separate button for the max power option if you have a stone cold dead battery you have to press an hold a certain button for it to jump a completely failed a dead battery. It’s has a lot of great options for charging ports for phones & tablets, bright flashlights, and the amount of storage capacity is amazing for such a small package that can jump BIG V8’s… and this past blizzard of 2026 on the east coast I had to jump 3 cars back to back an it did it with no fuss or killing the battery ( full charged it took one bar of power out of it) I’ve owned it for almost a year and have yet to charge it again except when I first got it I have it a full charge and almost a year later it still has the same charge AMAZING!!! ... show more
Reviewed in the United States on February 26, 2026 by $ell$
    • Car charger
Great product, materials are heavy duty. Extremely easy to use. Been having it for a while now, unopened, for emergencies. But I recently used it brand new out of the box and only charged my truck for less then 5 minutes and it turned on right away. Great recharge power. Very handy!!
Reviewed in the United States on March 12, 2026 by Gerardo Marquez
    • This Item Is A MUST HAVE!
This product truly makes jumper cables obsolete. I purchased this 1 1/2 years ago, charged it, and then stored it in my Honda Accord's trunk. It was not until yesterday, 1 1/2 years later, that I needed it to try to start my car's depleted battery (due the cabin light having been left on overnight). I could see that the NOCO Boost still retained 50% of its charge despite having sat in my trunk for 1 1/2 years. I firmly connected it to my car's battery and immediately my car's dashboard came to life. I waited less than one minute before twisting the ignition key, and on the 2nd attempt (within only seconds of my 1st attempt) - my engine started up. In the past, I have hated to beg strangers to give me a jump, even though I have always carried jumper cables. And AAA has been a nightmare, because whenever have I needed a jump in the past (before buyng the NOCO Boost) - I have had to wait close to 3 hours for AAA to come to me. Then I found out about the NOCO Boost from someone working for AAA who used it to jump an old car of mine. I purchased one immediately. This product is so small, so convenient to use, and mine has proved itself to be so reliable, that I consider it to be a MUST HAVE ! It is sad that a couple reviewers have stated that their product failed to work for them. But with an overall composite star rating of 4.6, clearly almost everyone experiences their product to be reliable. This product should be charged before storing it away. I do not remember whether mine came with a charge. ... show more
Reviewed in the United States on January 1, 2026 by Godspeed
    • Needed to use override feature
Like others have said, the lack of any instructions and the lack of a wall charger makes it less than a 5 star product. I was getting ready to give it a 1 star review because it stopped working. I was having battery trouble with my wife's car and used it twice to start her car. It worked wonderfully and was much easier than using cables and my car. On a third time of using it I couldn't get the "ready" light to stay on and it didn't charge at all. The unit was fully charged, it just didn't work! Cables to the rescue! Again, needed to use it and couldn't get the "ready" light to stay on. THEN... I watched the video on doing a safety override, needed when the dead battery is completely dead. I used this feature and it worked perfectly to start the car. Well done me for checking everything available before sending it back! :) Although having that in a manual would have been nice. ... show more
Reviewed in the United States on February 28, 2026 by Judy Niemie
    • Works completely as advertised. Unbelievably easy to use for anyone and extremely reliable
I only wish I had this booster starter long ago. I bought it for my daughter after finding her stranded one day in the rain with a dead battery. Someone with a booster starter helped her and after quite a bit of research I settle on this particular brand and model. Even before I gave it to my daughter a neighbor’s battery had died so I thought what better way to try it out. The simplicity of charging and connecting it is beyond amazing. I rewatched a YouTube video to make sure I wasn’t missing anything because it seemed too easy and too good to be true but the video confirmed how simple it was. She initially thought there’s no other car around to jump start her car but I showed her this NOCO GB40 and within seconds her Cadillac SUV started immediately. Highly recommend. Plus it can be used as a flashlight as well as a charger for anything requiring USB port. ... show more
Reviewed in the United States on March 20, 2026 by Anders Nilsson
    • Lifesaver!
I bought this four months ago to the day, thinking I'd never use it. Well, last night, we left the cabin light on in our car. This morning the battery was dead. We could not start our car. We attached the red to the positive, the black to the negative, waited 30 seconds while the lights flashed on the NOCO Boost, and the car started on the first try. Amazing product. ... show more
Reviewed in the United States on March 19, 2026 by Sam Dudek
    • Absolutely worth it!
Amazing christmas gift! I purchased this as a gift for my boyfriend who recently purchased a used Mitsubishi Evo 10. We were having battery issues in the summertime, which prompted me to add a battery jump start to my cart. I gifted him this for Christmas and since then it has been essential for us, especially being in the midwest with the current winter storms (-15°!). So far within the first month of having it, we have already used it a handful of times. It works very quickly and efficiently. We haven't used the USB charging port so far, but i could see it, along with the flashlight, being useful is we lost power. It is very lightweight and compact for what it is! Best and most useful christmas gift by far! ... show more
Reviewed in the United States on January 24, 2026 by Allison C.

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