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.

Andrea C. –
Very convenient to have and easy to cooperate
This has saved my ass several times and it’s also great to have when a friend or family are in the need of a jump. Plus, it’s very easy to operate! Big plus in my book.
Kelsonhoff –
Frustrating with no instuctions
I havent actually used it yet but I was pissed off enough to write this. Package came with a thick book in the smallest font I have ever seen. I had to use my mag light on my iPhone to read it. There were no instructions, only warnings in about 20 languages. I had to google the company to find a guide on how to use. the pages shown in the online guide were not in the included booklet. I will followup on the actual use once I get a chance. Now that i found a users guide I am charging the unit. Evermore pissed off since Amazon delivered it to my next door neighbor. Perhaps they could hire people who can read house numbers. Both houses have distinct number signs right out front.
Cyan13 –
Did not work on my particular vehicle.
Unfortunately this did not work on my car’s battery (‘07 Lexus RX 350). The battery is only 5 months old and the car was left sitting for three weeks for reference. Per the instructions the white light turned on which means the device was hooked up correctly. I tried starting the car immediately and when that didn’t work I waited 30 seconds as stated in the instructions. Still didn’t work. Tried a few more times and gave up. The return seems to be a hassle for this, Amazon states they will refund me within 30 days after they receive the product. Considering all the good reviews I wish this had worked for my car.
Vicky Fant –
Battery charger
It won’t work at all
Amazon Customer –
does not work
does not work
Felicap78 –
Returned it
Not worth it. It couldn’t jump a wrx.
Katelyn Culbreth –
Okay product get the bigger one
It’s an okay jump box but you gotta charge it up all the time, which is really annoying when you need to use it a lot But solid for a 1-3 time use
Amazon Customer –
Battery charger
My neighbor had to jump my car. It happened so fast that I asked him for the link I now have it and the charge stays in it for a long time. Yes you have to charge the charger but like I said it holds the charge. I would highly recommend.
sscooter –
Looks good could perform better
It could not start a single cylinder ATV with battery voltage at 11.9 volts. I even let it sit hooked up for over a minute and NO go. This was exactly the purpose and situation I purchased it for, day ruined could not get out and ride.
Quince G –
This is a NECESSITY!
I’ve used this the same day I ordered it using same day shipping and my car started with no hesitation right out the box!!! Definitely a MUST to have one of these!
Daisy Rojo –
Reliable
Reliable and does work as explained.
Nick Michaleas –
Pissed
I have sent this back months ago,didn’t start my vehicle,sent back and never recieved my refund,I do not recommend, totally pissed I spent 110.00 dollars on this and can’t get my money back,should of kept it.
crycry –
Great product
Works great easy to use
Vera –
This new-fangled contraption is great!!!
I was having problems with the battery in my car and was carrying jumper cables in my trunk but you need another car to jump it which isn’t always there. And I was a little leery of this tiny new-fangled contraption and didn’t know how well it would work and doubted that it would actually have enough power to actually work but IT WORKS GREAT! I’ve used it twice and it works great. And when it isn’t used it seems to hold the charge for quite a while. I make a point to check the charge once a month. It’s worth the money just for the peace of mind.
Darrell Christy –
Used twice… it died!
Don’t waste your money. After 2 uses, it will not even jump start a lawn mower! Don’t bother with getting support, they won’t reply.
John M. Mcafee –
Not good choice for seniors with arthritic hands.
Had this for several years before I needed to use it. When I needed to hook it up the clamps were way to stiff for me to squeeze. I had to have another person hook them to the battery. Once he had them connected it worked just like it was advertised. Great product but not for someone with severe arthritis in the hands. I would recommend it to average user.
Art Wickerham –
Missing items
Receive the unit today. Went to charge it but there was no instruction manual or car port adapter. Per the online instruction it says, “Step 1: Charge the GB40. The GB40 comes partially charged out of the box and needs to be fully charged prior to use. Connect the GB40 using the included USB Charge Cable to the USB IN port and the USB car charger. It can also be recharged from any USB-powered port, like an AC adapter, car charger, laptop, and more. Did not find the USB car charger. Is there supposed to be a manual included, in addition to the multi-language warranty?
manuel –
quisiera un reemplzo
Este articulo no funciono nunca, lo prove y no funciona
Amazon Customer –
Never leaving home without it.
My battery died in an underground, packed, hotel garage. Couldn’t get a car close enough to jump it. Ordered this and it showed up to the hotel the next morning. Charged it a few minutes ( cand mostly charged(, watched the how to video, and jumped the battery myself. I was so scared, but it was so easy. I am buying one for each family member now.
JHC –
Compact and works
Compact and easy to use, rather than jumper cables
Will –
Long lasting battery. Boosts car battery very fast!
We purchased this battery booster in 2023! Only used it once for my personal vehicle but I’ve already lost count how many people we’ve been able to help with it. We boosted about 5 cars before having to charge and the charge holds for a long time without depleting the battery. This booster is stated for small vehicles but I can confirm that it’s been used to boost a full size pick up truck. The polarity safety feature is great, making it impossible to cross the battery or wires. Took us too long to leave this review but this item is a must have!
maxie –
Misleading Description
The description on the page is misleading, and also items that were supposed to be in the box are not there. Specifically, there is not a 12-volt car charger nor a user manual in the box. Also, the description says, it uses usb micro connectors–so I also bought an adapter to use with a wall charger ( that I need to supply) — but it is usb-c, so I wasted money on the adapter and now need to buy a usb -c adapter.
Wasabi –
Works reliably!
I have a midsized SUV, ag type battery died. These batteries are hard to get and hard to install. I had to go about a week before mechanics could get to it. I tried several boosters, one saying it was 2000 amps. Borrowed my neighbors noco 1k, it worked with barely a charge. Bought my own and easily performed multiple starts. Worth it’s weight when you need it.
Joan Maybury –
Everything about this device is stupid!
Piece of junk! Instruction manual NEVER found English and I looked page by page and NO ENGLISH, had to literally cut the box, package open! There was NO CORD SUPPLIED TO CHARGE THIS STUPID DEVICE and there were no instructions telling you how! I WOULS NEVER BUY THIS PIECE OF JUNK AGAIN. ANYONE THAT BUYS THIS IS SIMPLY STUPID BUT I CANT RETURN IT BECAUSE I HAD TO CUT THE DAMN BOX OPEN TO GET IT OUT, STUPID!!! DO NOT BUY THIS DEVICE!
A.J. –
Wowweewowwee. Where have you been?
Wowwee. This should be part of your emergency pack. It works like a charm. It took all of 20 seconds to charge my battery after sitting in freezing temps for days. I’m going to miss seeing Kevin, the responding AAA guy
PKSreviewer –
NOCO car battery charger
It seems like it’ll be easy to use and fairly foolproof. Charge it when you get it. I haven’t needed to use it yet; ordered it because I had to have my dead car towed.
-A –
Beware battery malfunction, and don’t trust the ratings they give these
Lasted just over 3yrs before overheating and bulging the plastic battery body just while sitting in vehicle. Honestly every time I ever pulled it out to use it it never was able to jump start my 3.6 v6 or 5.3 v8, so I don’t trust their guidelines on what it can jump are correct or how many times for that matter. Won’t purchase this brand again, will find something stronger and more reliable for the money wasted on this.
Joseph Maksoud –
Easy to use.
It works over and over. Compact and easy to use. I used it several times on a Jeep Grand Cherokee and it worked on the first try
Melissa Escobar –
Works great, but…
While I do love this product the parts in the picture should have either a different design or stronger material needs to be used. As soon as I clamped this on to the battery it broke off and I feel like it kind of defeated the purpose of them being “spark proof”.
Alma R. Blanton –
Batteryvcharger
A needed item. Handy to have.
Oceanoak –
Must Have for Each Car
What a great device. It’s a must-have for each car I own. The NOCO BOOST PLUS GB 40 has saved my bacon numerous times. When you are all alone this is what you want. No AAA hassle. No finding someone who will allow you to use jumper cables hassle. No ‘dead jump box’ hassle The technology is really good. Highly recommend. Just plug the little thing into your car USB every once in awhile. Peace of mind.
Peteypi135 –
A great jump starter this far!
I haven’t had the item long but as of right now it worked great! My car started up immediately! I’m satisfied as of now. Will update if anything changes. Even came with a cool bag to put the booster in.
Teresa –
Equity
There no way to charge it. It didn’t come in the box.
Candace sandt –
Only used 2x don’t work anymore
Used 2x already doesn’t work
Fran Georgiades –
Worst purchase
Did not jump a 4 cylinder car!