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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.
Fulfilled by Amazon
Arrives Thursday, Jul 17
Order within 19 hours and 25 minutes
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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


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


Item Weight: 2.4 Pounds


Amperage: 1000 Amps


Peak Output Current: 1000 Amps


Brand: ‎NOCO


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


Item Weight: ‎2.4 Pounds


Amperage: ‎1000 Amps


Peak Output Current: ‎1000 Amps


Specification Met: ‎UL


Cable Length: ‎23 Inches


Manufacturer: ‎NOCO


UPC: ‎046221150025


Global Trade Identification Number: ‎25


OEM Part Number: ‎GB40


Automotive Fit Type: ‎Universal Fit


Model: ‎GB40


Item Weight: ‎2.4 pounds


Country of Origin: ‎China


Item model number: ‎GB40


Batteries: ‎Lithium Metal batteries required. (included)


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Machined


Manufacturer Part Number: ‎GB40


Bulb Type: ‎LED


Special Features: ‎100 Lumen LED Flashlight, Portable Power Bank for USB Devices, 1000A 12V Portable Lithium Car Battery Jump Starter, Reverse Polarity and Spark-Proof Protection


Date First Available: January 1, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jul 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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Great Product
The NOCO Boost Plus GB40 is an incredibly handy tool. I love how compact it is—and most importantly, it works! We used it on a dead battery, and it started the car quickly with no issues. Its small size makes it easy to store, and it’s very user-friendly, even if you’re not mechanically inclined. The built-in flashlight is a great bonus, and it can even charge your phone in a pinch. It’s one of those things you hope you never need, but you’ll be so glad to have when you do. Highly recommend for every vehicle! ... show more
Reviewed in the United States on July 1, 2025 by GC
    • As a Tesla Model 3 owner, I wasn’t sure if the NOCO Boost Plus GB40 was something I’d actually need.
Review Image by Vivi Vivi
Review Image by Vivi Vivi
Review Image by Vivi Vivi
Review Image by Vivi Vivi
Review Image by Vivi Vivi
Review Image by Vivi Vivi
Review Image by Vivi Vivi
It’s marketed as a jump starter for gas and diesel cars, so I wondered if it would really be useful for an EV. But after keeping it in my car and using it a couple of times, I can say this thing is a lifesaver—especially for emergencies involving the 12V battery. The GB40 isn’t going to charge your Tesla’s main battery (that’s a job for superchargers). Instead, it’s for the 12V auxiliary battery. If your Tesla’s 12V system fails, you might find yourself locked out of the car or unable to start it. That’s where the GB40 comes in. It powers up the 12V system, letting you open the frunk, reboot the car, and get things moving again. So, while it’s not about charging your Tesla to drive, it’s perfect for those rare “oops, my car is unresponsive” moments.. aka my dead Tesla. This thing is compact and tough. It’s small enough to keep in your frunk or under the seat, but it feels super sturdy. The clamps are solid, and the whole setup feels really high-quality. It has built-in safety features like reverse polarity protection, which means you won’t fry anything if you accidentally connect the clamps the wrong way. 1. Open the frunk and find the 12V battery. (If you haven’t done this before, look it up—it’s good to know in advance!) 2. Attach the clamps to the battery terminals. 3. Press the power button on the GB40, and give it a few seconds to work its magic. That’s it. Your Tesla should come back to life!! Here’s some tips for ya; Keep It Charged The GB40 holds a charge for up to a year, but it’s smart to top it off every few months or after you use it. Use It as a Power Bank It has a USB port, so you can charge your phone or other devices. This is super useful on road trips or if your phone is dying and you just need a charger (conveniently in the back of your trunk booyeah). Keep it somewhere easy to grab, like the frunk or under the seat. It’s small but powerful. Works perfectly for the Tesla 12V system. Safe and easy to use, even if you’re not super techy. Doubles as a power bank and flashlight, which is great for road trips. Built like a tank. ... show more
Reviewed in the United States on January 6, 2025 by Vivi Vivi
    • Small and light weight - Highly recommended
I picked this up just in time. My wife's Lincoln Corsair's battery died unexpectedly and had the chance to try it out. It worked as expected and started the Lincoln Corsair with no issues. It's amazing to be honest. I remember having to flag someone down for a jump. Those days are over. It's small, light weight and easy to use. Highly recommend. ... show more
Reviewed in the United States on July 6, 2025 by Phil
    • Best charger out there! Simple to use and works well!
If I could give this more stars, I would! Its absolutely fantastic! It jump-started a truck and my car on one charge. It hardly drained the charger. It still has enough power to charge many more vehicles. For me this is the best investment as it really works well. Now no more streching booster cables from car to car which I hate. Just follow the instructions. You have to hear a clicking noise showing that it's charging. Wait a few seconds and boom, It'll start your car! Love it! ... show more
Reviewed in the United States on June 16, 2025 by Isabella
    • Great and easy to use
Great size for storing in car, easy to use, jumped my car through unusual cold winter many times, have also used to jump the riding mower battery! Very reliable and would recommend! Will be purchasing another for my teenager to store in his car! Charges quickly too
Reviewed in the United States on June 6, 2025 by Lindsay L.
    • One of my best purchases from Amazon
This thing is amazing. I can't believe I hesitated to buy this product. Here is my story: This past Sunday I woke up to my 2014 BMW X5's flat battery. There was a cold snap and within a couple of days my battery was dead. The last time it was functional was Friday night. I called my auto shop on Monday and due to pretty much everyone in the area having dead batteries due to the cold snap, I couldn't get an appointment for a week. I didn't know if I should jump it, or call roadside assistance and drive it around to make sure the battery was fine before next Monday. Instead, I took a chance on this wonderful device. It came yesterday and I was already impressed with just the packaging. It's minimal, sturdy, and accurate. Straight to the point packaging. I opened it up, and started charging the remaining battery. Apparently, it comes 75% charged and you have to do the rest. I used a USB-C cable from my computer and charged it full within minutes. By the way, the USB slots on this device are USB-C. I've seen a few reviews say that it's MicroUSB. The one I purchased is USB-C which was another plus since you can use this to charge your phone. Fast forward to this morning. I let my car sit for another day, which I thought may have been a mistake. I went down to try to use this device to re-awaken my beast... his name is Benny. Benny the Beemer. Anyway... I attached the positive and negative clamps to the posts under my hood. For most BMW owners, those posts are connected directly to the battery which (in)conveniently is in the trunk behind a electrical trunk latch. BMW did a solid adding these posts under the hood so you didn't have to mess with the trunk release. I turned the device on and the light appeared, but the LED's for Boost weren't "chasing" as the manual says. I figured my battery was completely deceased and I would have to call for RA or a tow. I checked the manual again and I missed the spot called "Manual Override". Now, as a sci-fi geek, this intrigued me greatly. Manual Override you say? Yes, if your car has a completely flat battery, so flat that the device cannot detect that it's even connected to a battery, it will not function within the safety limits. Meaning the device doesn't know it's connected to a battery so it will not provide the 2A charge for safety reasons. That's what the Manual Override button is for. I love it. As soon as I pushed that button, the car came to life. It was like Frankenstein's monster. Everything negative turned positive (NPI). See, the Manual Override sends the 2A charge without verifying it's connected to a battery. This lifts the dead battery to at least 2A so you can try and start the car. The car came to life, the alarm started blaring so I jumped into the drivers seat, said a split second prayer to the car gods, and VROOOM! Benny was alive. This device is amazing. I will be buying one for everyone in my family. Everyone should have this device in their car. If it can bring back my 2.5T 11 year old 3.0L twin turbo beast, it can bring backs yours as well. This device can handle anything up to 6.0L for gas and 3.0L for diesel. Buy this now, especially if you live in colder climates. ... show more
Reviewed in the United States on January 21, 2025 by Jason Paradis

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