Product Features and Description
When your car battery fails, the NOCO Boost Plus GB40 1000A UltraSafe Car Battery Jump Starter is your go-to solution. Designed not only to revive dead batteries in vehicles up to 6.0L gasoline and 3.0L diesel engines, this NOCO jump starter serves as a versatile power booster and portable charger. Its effectiveness isn’t just limited to automotive emergencies. This compact yet powerful device can also charge gadgets, making it essential for camping trips or other off-grid adventures where power sources are scarce.
Stay tuned as we dive deep into the features of the NOCO Boost Plus GB40, gather user opinions, explore expert reviews, showcase videos, compare it against competitors, and highlight the most attractive market offers available for this essential car battery booster.

- Powerful and Versatile NOCO Jump Starter: Quickly and efficiently start dead batteries with this powerful 1000-amp lithium battery jump starter. Capable of up to 20 jump starts on a single charge, it’s designed for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters.
- UltraSafe Technology: Enjoy a safe and easy-to-use car jump starter experience. The NOCO jump starter features a mistake-proof design with spark-proof technology and reverse polarity protection, ensuring no worries about incorrect connections or sparks when connecting to any 12-volt vehicle.
- Multi-Functional Tool: This device isn’t just a car jump starter but also acts as a portable power bank and an LED flashlight. You can recharge smartphones, tablets, and other USB devices. It charges quickly from any powered USB port in about 3 hours at 2.1 amps. Additionally, it includes a 100-lumen LED flashlight with seven light modes, such as emergency strobe and SOS, for added safety and utility.
- Advanced and Durable Design: The NOCO jump starter boasts a state-of-the-art design with high-discharge lithium technology that ensures safe operation in any climate. Its rugged, water-resistant enclosure is IP65 rated, and the rubberized over-molded casing helps prevent scratches or marring of surfaces. The device is ultra-compact and lightweight, weighing just 2.4 pounds.
- Comprehensive Package: The package includes the GB40 UltraSafe Portable Car Jump Starter, heavy-duty booster clamps, a 12-volt car charger, a micro USB charging cable, a microfiber storage bag, and a user guide. It comes with a 1-year warranty and is designed in the USA, ensuring reliability and quality.

The NOCO GENIUS BOOST GB40 is a highly portable and compact lithium-ion jump starter, designed specifically for 12-volt batteries. This NOCO jump starter can safely rejuvenate a dead battery in mere seconds, offering up to 20 jump starts on a single charge. With spark-proof technology and reverse polarity protection, it ensures a mistake-proof operation, making it highly user-friendly and safe for anyone to use.
Additionally, the GB40 features an integrated high-output 100-lumen LED flashlight with seven different light modes, including low, medium, high, flashing, strobe, and emergency SOS. This versatile device can hold its charge for up to one year without needing a recharge. An internal battery pack allows it to serve as a power bank, capable of recharging personal mobile devices such as smartphones, tablets, and other USB devices. It can also be recharged through any powered USB port.
Rated at 1,000 amps, this powerful car battery booster is suitable for gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters, covering a wide range of vehicles including cars, motorcycles, ATVs, boats, trucks, SUVs, RVs, and even lawnmowers. The combination of its compact design and high functionality makes the NOCO GENIUS BOOST GB40 an essential tool for any vehicle owner.

Key Features and Performance of the NOCO Boost Plus GB40 Jump Starter
Feature | Description |
---|---|
Amperage Excellent | The NOCO jump starter provides 1000 Amps peak current, which is crucial for jump-starting a dead battery in seconds. This amperage is suitable for up to 6.0L gasoline and 3.0L diesel engines, making it highly versatile and effective for emergency situations. |
Battery Type Good | Equipped with Lithium Metal batteries, the NOCO jump starter ensures high efficiency and long battery life. Lithium batteries are known for their high energy density and lighter weight compared to traditional lead-acid batteries. |
Special Features Excellent | The GB40 model includes a 100-lumen LED flashlight, a portable power bank for USB devices, and offers reverse polarity and spark-proof protection. These features not only enhance the utility of the jump starter but also ensure safety during use. |
Peak Output Current Excellent | The peak output current of 1000 Amps is crucial for providing the necessary power to jump-start the vehicle’s battery. This high peak current can jump-start most cars multiple times on a single charge. |
Get ready for any roadside emergency with top-rated jump starters. Leading the pack is the NOCO Boost Plus GB40, perfect for 6.0L gasoline and 3.0L diesel engines. Discover more options in our comprehensive roundup here.

What Are the Upsides and Downsides of the Car Battery Booster
Highly Reliable and Effective – The NOCO Boost Plus GB40 has proven to be a dependable tool for many users. According to Amazon Customer, it “actually SAVED MY DAY” by providing simple, easy-to-follow instructions. Robert L. shared a similar experience, stating that his completely dead battery started right up after using this jump starter.
Easy to Use and Portable – This product stands out for its user-friendly design and portability. MissSlick praised its lightweight and versatile nature, highlighting that it “comes with its own carry bag which helps keep it clean stored in the trunk of my car.” The ease of operation was echoed by Linda T, who noted that the product “seems simple” to use.
Long-lasting and Convenient – Many users appreciate the NOCO Boost Plus GB40 for its long-lasting charge and convenience. JM remarked that it is “just as essential in the trunk as a jack and spare tire,” and Friendly ghost confirmed that it “had a full charge” even after sitting in their car for six months, showcasing its reliability over time.
Inconsistent Performance – Some users have reported issues with the product’s performance. Geoff Davis mentioned that the jump starter did not work on either his 6-cylinder jeep or 4-cylinder car, suggesting that it might “work on a motorcycle.” Similarly, Valerie was disappointed when it couldn’t start her V6 Accord despite being fully charged.
Charging Issues – There have been complaints regarding the device’s ability to hold a charge over time. Dave K. experienced difficulties with the jump starter, stating that it barely started his car and “gave me too much of a sense of being prepared and only let me down.” This inconsistency can be a significant drawback for users relying on the product in emergencies.
The stars speak of…
Opinions about this product were divided in such a proportion among the buyers.
I have ordered this exact same Nocco before, but it came with a semi hard carrying case before. I expected it to come with the case again and it did not. I have not yet attempted to use this so I will update my review when I do.
Didn’t really work well Took way too long
Insights & Inquiries: Getting to the Heart of Your Questions
How many times can this jump starter jump-start a vehicle on a single charge?This portable jump starter can safely jump-start a dead battery up to 20 times on a single charge, making it highly reliable for multiple uses before needing to be recharged.
What types of vehicles can this jump starter be used on?This versatile jump starter is suitable for a wide range of vehicles, including cars, motorcycles, ATVs, boats, trucks, RVs, SUVs, and even lawnmowers. It supports gasoline engines up to 6.0 liters and diesel engines up to 3.0 liters.
Is it safe to use for someone with no experience?Absolutely. This jump starter features spark-proof technology and reverse polarity protection, making it mistake-proof and safe for anyone to use, even those with no prior experience.
How long can the jump starter hold its charge?The internal battery of this jump starter can hold its charge for up to one year without needing to be recharged, providing peace of mind for those who may not use it frequently.
Can this device charge other electronic devices?Yes, it can. The internal battery pack can recharge any personal mobile device, such as smartphones, tablets, or other USB devices, making it a handy portable charger as well.
What are the special features of the built-in flashlight?The integrated high-output LED flashlight has seven light modes: low, medium, high, flashing, strobe, and emergency SOS. This makes it versatile for various situations, from basic illumination to emergency signaling.
What is the weight and size of this jump starter?This jump starter is lightweight and compact, weighing just 7.9 ounces with dimensions of 4.61 inches in depth, 8.19 inches in width, and 4.21 inches in height. This makes it easy to store and carry around.

CSPEN –
Jump for joy!
It is so easy to use and works great!
Justyna –
Car Esscential
I have peice of mind that I have this, it is a good thing to have and be able to share with others if they need a jump, good to be prepared 😉
Amazon Customer –
Good product
Fast delivery great price
PikeyFan –
A huge fan of this product, its a potential life saver
I was originally given this as a gift and didn’t touch it for about 11 months until my truck battery died. This thing still held power after all that time and my truck was jumped within 2 minutes. It is small and compact but still holds enough power for multiple jumps and charges pretty quick. Definitely worth the money, i now buy this as gifts for my friends and family.
Trace –
Peace of mind
Great peace of mind, have not used. We were stranded out of state and some man helped us by using one of these, so I ordered one to keep in my car for emergencies.
Jeff S. –
Works OK but this newer version has some unwanted changes
I used this on my second vehicle and it worked as advertised. So I ordered a second unit for my second car. What CHANGED: The newer GB40 has a micro USB-C on BOTH ENDS of the provided cable! So you have to get a charger with a USB-C female port. Or an adapter. My older GB40 had a USB-A on one end (and the needed USB-C on the other end) so I could charge it easily with the various USB adapters I had around the house. Also there wasn’t any instructions in this newer version. Just a booklet in every known language that had all the warnings and precautions. I know this isn’t rocket science but I kinda want to be sure I’m doing it right. Had to use the internet for the info. Product itself=5 stars No instructions, and un helpful cable = 0 stars.
Jonathan –
Worked great in a snowstorm.
I know almost nothing about cars. This jumped my girlfriend’s car during a snowstorm when she was stuck. Easy to use with no real car knowledge. Exactly what I wanted. I’m keeping one of these in my car from here on out. 1 jump used very little of the battery. So it should still work fine even if it’s been in your car for a few months uncharged.
santiago moody –
Didn’t last a year.
Didn’t get to use much, when I did it wouldn’t last. Not worth the price!
H. Gillespie –
MYbe ok depending what you use it on
I’m not sure if inwould recommended this. I tried tonuse it on my vehicle and haven’t not successfully had it work. I have a cheaper one that works better on my vehicle than this. Works good on the bike.
JCisneros –
Save your money
Tried to jump my motorcycle and my car. Both did not start. NOCO claims this product will even start dead batteries, LIES!!!!
Amazon Customer –
very good
great product……
michael schuh –
Not strong or reliable.
This product failed to start my car several times and I had to use my full size jump box and the car starts right up. This product fully charged won’t start even a weak battery. Do not buy this. It will leave you stranded.
Doran Carrier –
Works great if you’re careful
Arrived fast and works great, but you have to be careful how you plug the clamps in!! Although one side is round and the other is square, it will still plug in either way. I took some Whiteout and drew a line on plug and charger so you can see in a glance if the lines match up.
Amazon Customer –
No CHARGER INCLUDED
Unbelievable. At this point it should ILLEGAL to sell a product without being able to charge. Oh wait…it is for Apple!!! Buyer beware! You cannot charge this garbage device without purchasing a SPECIFIC CHARGER. Pathetic. Standard Merican purchase.
Gil –
Nice Device But, Be Aware.
The unit is easy to use and it does the job. It charges quickly and it comes with an adapter for use in the car lighter. My only complaint (and my fault for not researching more carefully) is that the charge cable does not have a standard USB plug. The unit is designed to accept a USB plug that can then be connected to another device to be charged. However, to charge the unit itself requires an adapter that does not come standard with the package. All of may adapters could accept a standard USB plug only. I had to buy another adapter separately.
Carlos –
Must have this tool.
Good shipping time and good product. Love it. Used it .. was fully charged.. great tool to have. Thanks
paul –
It works
This product is great. Started my 2006 Scion after several tries. Totally dead battery. I’m pleased and recommend this product. 🙏
Quang Vu –
Very nice
Very nice
K Castillo –
Incredible
Absolutely incredible little gadget. I jumped 3 Ford F-150s and a Ford Transit Van, all with completely dead batteries, on a single charge (without making a dent). This thing is a godsend.
Stewart Levin –
good product
quick ship. As described
bisschi –
Buy it for a piece of mind
Great purchase So happy I did it Works perfectly Recommended
I just received this sissy bar today and I’m so impressed that I have to write a review I don’t usually write reviews about stuff but it fits perfect it’s made very well it’s got a good way to it looks nice very pleased with this –
Great
Love it works like it should
Tom –
Watch the manufacturer’s YouTube videos for how to use
Should have bought one a long time ago. So much easier than jumping the old school way using another vehicle. Jumped my Subaru with a completely drained battery, and it started right up. Only issue is it doesn’t come with instructions, and the 2-d code did not work for instructions, but I was able to find YouTube videos from the manufacturer on how to use it. It is important to watch the manufacturer’s YouTube videos on how to use it and not rely on videos from random people.
MT –
Easy to use but follow instructions!
It will actually jump start a large V8 SUV!
robert Delgado –
Don’t buy this product
It was useless ! It was useless ! When I need it, the most it failed. It wouldn’t even turn the car over and it was not a big car ether. The weathe was 32 not below 0 and I had a card give me a jump to get it started I would avoid buying this product. I wish there was a way I have tested it before I may purchase. If you must buy one, make sure you get the maximum amperage 1000 A is not enough
Is this a scam? I only got the parcel now and it is empty. Nothing inside the plastic envelope. And i can not return becuase allowed returns is only yesterday. –
Excellent Product
I ordered this product last night because I need it urgently as my car battery conked out. I ordered a next day delivery and to my amazement I recieved it after lunch and I tried it as soon as possibly and again to my amazement the product worked as what they claimed. Thank you so much for an excellent service and an excellent product.
Fer Garcia –
Works great
Works great, easy to use, easy to charge. So far I have tested it with a Nissan Versa and a Mazda 3, no issues at all.
Amazon Customer –
Poor performance
Overall terrible product. The first time I used it worked fine, although extremely slowly. Both the second and third times I attempted to use it, it was charging my battery for over 30 minutes before eventually dying without getting my car started. For the cost of this item this is a massive let down, especially given they claim it handles “20 starts”. Take your money elsewhere.
Mark C –
Works Great and Easy to Use
I got to use it for the first time today. It is very easy to use. The cable only plugs in one way, then you connect the well built clamps to the battery. Turned it on, and it immediately started my 4.3L Blazer. I hadn’t used the Blazer in over a month, and the weeks of below freezing temps had taken their toll on the battery. This is so much safer and faster than using another car to jump it. I would highly recommend this.
corey –
Excellent booster
Excellent booster. Works great in all weather conditions. One of the plastic prot3ctors on a clamp did break, but the unit still works great.
Henry McCormick –
Worked
Just as advertised. Charged it for an hour or so, plugged it into a dead 2016 Malibu, waited a minute or two and it fired up.
Garry L. Emerson –
Manual nightmare
Excellent device. The manual is so tiny even a magnifying glass is hard to use. How about a link with larger print to make it readable and printable.
scott gafkjen –
all most people will ever need
6.0 GMC pickup left the key on, stone dead -10 put on this jump pack started right up!
Robert V –
The User Manual is Ridiculous
I’m sorry but this user manual substantially impacts the usability of the product and deserves this poor review. This user manual is so ridiculous it’s actually laugh out loud funny. First, the type is sooo tiny! It’s about 1/32 of an inch so you better have really good eyesight. It gets more ridiculous when you realize that only 3 pages of the 300 page user guide are English. The rest is written in languages no one in the US has ever heard of. You couldn’t print a separate manual for”Cestina”, “Svenska” “Eesti” whatever that is? You had to print every language known to mankind in this manual and then make the type so tiny it’s barely readable? I can’t even read this manual because the print is so tiny! Ridiculous. I’m returning it.
Ennis Flemming –
This still works!
I bought this back in 2017 and just now getting around to writing a review. I still use this charger every year on camping trips. I bring it with me just in case and we’ve had to jump start a neighbour’s car once, however we mainly use it as a power bank for our phones and the occasional light if we need it. We stopped using the carrying case since it just fell apart and was basically a sack. It’s been almost 8 years now and it still holds a decent charge, I’d recommend buying it for emergencies.
Dee –
Won’t boost a totally dead battery
Wouldn’t boost a totally dead battery. Had to get one of the bigger ones – the ES5000 – which boosted my battery. if your car lights up a little, then this may work. But if nothing registers, you’ll need a more powerful booster. (Or call AAA, and they have one of the bigger boosters.) Btw, my battery went dead because the dash light got left a few days while parked on a NYC street.
John Wittle –
Best in class by far
I’m dealing with a hard to diagnose parasitic drain somewhere in my car, these new cars have so many electronics it’s hard to tell what’s causing the issue. But it means that if I don’t drive my car for a few days, the battery dies. I bought a couple portable jumpers and tried them all, and NOCOs are leagues above the competition. This product is genuinely incredible. This can start my car four or five times before going dead, and of course, with USB charging, I can just charge the jumper itself off of my car once the engine is actually started. Pure self-sufficiency in emergency, as long as I have a tank of gas. On top of that, the flashlight is great, and the usb out for charging my phone might come in handy one day. But honestly, the main draw is just the ease of use. All of the other portable jumpers either required me to set the voltage setting, or made it unclear to what degree they were charged, or included instructions for jumping that were more complicated than just “red to red, black to ground, turn the key”. This one really is that simple. It would be a steal at twice the price.
Patrick Clough –
Excellent product
I’ve used this many times since purchasing. Used it to restart my parked car every now and then and assisted others who were in a bind. I haven’t used the light feature because I have no need for it at this time, but I’m sure it may come in handy to persons who don’t travel with Led flashlights. Excellent buy.
Dennis Jeansz?!z!s!s –
Very good
Everything was what I expected
Amazon Customer –
Works great
Works great My truck has been sitting for a while and it started right up
Michael Gillette –
I’d recommend
I’ve used it many times for jump starting my truck. Works like a charm
Tom S. –
Missing User Guide
The product is nice and compact, but unless you have experience with jumping a dead battery, you just have to assume you know what to do as there wasn’t any User Manual in the box!!! There is a large warning manual in multiple, multiple languages, which is basically there I guess to protect the manufacturer seeing they don’t tell you how to use the product in the first place. So, for all the other people that didn’t get a user manual with the product, and I have seen other reviews saying they didn’t get one either, the first thing to do is charge up the unit. You need to plug it into a newer USB-C port, not the standard USB port that has been around for years and years. They should at least provide a link where you could download an instruction manual.
BellaCreationz –
Works Great!
Perfect portable booster charger. It charges up pretty fast & boost your battery within a few minutes then you’re on the go! 👍🏽
Tara Schoen –
Convenient and Safe
Have in both vehicles. Have used on our car/truck n Have helped neighbors n others Practical, Convenient, Safe Purshase. Comes w a little carrying bag. Came w 90ish% charge 5/5 buy.
Bobby F –
easy to use.
Have had to use twice. I have one for both the van and one for my truck.
Walleye Queen –
excellent product
highly recommend
Jennifer C –
A reliable and easy to use little day saver
Many people probably buy a jump starter, toss it in their vehicle, and don’t end up using it for quite some time. Perhaps by pure coincidence, I ended up running my battery down shortly after buying this NOCO and quickly got to test it out. Extensively. It turns out my battery was the 7 year old OEM model and losing all charge killed it completely. So, for a week or so I was resurrecting it 2-3 times a day to get to and from work. I can confidently say that this NOCO unit works well and very quickly. I was able to get my car moving many times before needing to be recharged. I also had the opportunity to use it to resuscitate a “bricked” Nissan Leaf, which required using the scary manual override button to get it to detect properly. I still don’t really understand that feature, but it seems to have worked. My one complaint, after clamping onto the contacts so many times, is that the ridged plastic tips of the cable clamps chipped several times. I would suggest switching to a rubber-like material for the tips to avoid this from happening. Other than that, this is a great product.
EasTEyEGoddess –
GreaT 👍🏾 ProducT
Happy I had goTTen This ITem helpful during The winTer
Curious –
Died After 6 Years
After just over 6 years being kept at reasonable temperatures and only being used a couple of times, this unit failed to work. It was fully charged but failed to turn over a low compression 1.8l engine that was at 65F. While $70 for 5? years of serviceable life was cheap insurance; the performance and value weren’t enough to motivate me to buy a replacement NOCO product. Keep in mind this unit only has a 24Wh battery, not much larger than a modern cell phone battery. Like most jump starters the battery isn’t a good fit for powering devices despite what the advertising suggests. Rather it is intended to transfer that small amount of energy in a fraction of a second to turn an engine over.
Gil.L –
Durability
Best item i bought being that I have used for a long time and so far it has been the best. I’ve tried others and all stopped working after a few uses.