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.

Commander –
Worked liked a charm
Simple and easy to use . Plug the usb to the unit , let it fully charge up. Connected the battery terminals to the battery and presto! The car started easily and made it to my destination without worrying. Definitely recommended by all the reviewers and as a reviewer I recommend this charger.
Amazon Customer –
Stopped working after 1 month
Worked great at first. Not it won’t charge. I have tried multiple chargers and multiple charging ports. I am very tech savvy, so I have tried everything and it’s definitely the product. Very disappointed
Always –
Works on my C-Max
I was a little nervous to try to jumpstart my car on my own, but I was tired of calling roadside assistance every time I left my car unused for a few too many days. I have a little Ford C-Max Hybrid so I was worried jumpstarting it might harm the electric battery somehow. I’ve used it a few times now and I works really well. One annoying thing though is that auto-safety never deactivates when I connect my car, so I have to manual override it, which makes me scared every time haha. Other was it works as expected. I always have it in my car ready just in case. It doesn’t take up much space, and hold its charge for a really long time. The instructions are clear and the jumpstart is very fast.
PAL –
Worth the money
Used this 3 times within 30 days of buying. Thought it might need a charge after that and when I plugged it in, it was still fully charged. I’m a 68 year old female and gives me piece of mind knowing I can jump car by myself. Even if you use it once in your lifetime, it’s worth it. Good gift for someone too. I am going to purchase for my son.
D_Zolbe –
AMAZING!
This has been an absolute life saver!!! I had a Honda Element and the battery kept dying on me. I keep this in the car, and it has come in handy!! Best purchase of the year. It only takes 30 seconds and you can crank your car right up! Would make a perfect gift for anyone – so nobody is ever left stranded! 10 out of 10
D Anderson –
Battery starter works well
If my car sits too long, something is draining the battery. I’ve had it looked at by two mechanics and they didn’t know why. I did have a new battery installed by the first mechanic. I bought this as a type of insurance so I won’t have to rely on someone jumping my car. We did test it on my completely dead battery and it started it right up.
Jacqueline Gordon –
Works well
Used twice so far, all good
Lane –
Must have for every vehicle
I usually charge this once or twice a year and it’s a must have in every vehicle (and boat). Recently it came in handy to save someone out on the lake with a dead battery.
Bobby –
Size
Good product
Denholm –
It’s alive!!!
Old Chevy sat in the back yard for almost two years. Battery was completely depleted. Had to use the ‘manual override’ mode but then it started almost instantly. With this little magic brick, the days of needing to ask someone for a jump are over.
Mike –
Wonderful
I got it and haven’t had to use it yet with winter coming I’m sure it will be used a lot more
Gregory Hlavac –
Manufactured E-Waste.
Used three times, then tried the next day after because of continuing car issues and the damned thing has self-discharged a single cell in the pack to 2.2v; this is a junk product apparently that isn’t capable of keeping its cells balanced properly. 2.2v, 3.7, 4.2v? Who designed this junk circuit?
DCRaider –
Saved us with dead battery. Easy start up and use.
After being stranded in a state park with a rental car. The rangers used this exact device to try and start our rental. Turned out there was a major glitch with electronics and the car had to be towed BUT I was so impressed at portability and use of this device we ended up buying one soon after. It’s so portable and we don’t have to rely on flagging someone down to use jumpers that take getting cars near each other. Directions were easy. We just used it last week when our own car had a battery glitch and we started it using this within 5 min. We just recharged it the week before so it was all good to go. We are buying one for our other car. Save this in your cart as the price goes up and down through the year.
Verified Customer1 –
Nothing Better
Worked great caught in prime day sale. Nothing better then NOCO
Wachkatze –
Quality and Dependable!
This little guy is very well made and dependable. This is quite likely the best product of its type on the market. I’m very pleased with the purchase. My only complaint is that the instruction manual uses very small print. One just about needs a magnifying glass to read it. It’s a very easy item to use, however. Highly recommended.
Amazon Customer –
No me gusto
Se descarga muy rápido
james Irvin –
1 year & not holding a charge.
Thought I’d flow up 1year in. This booster depletes in about a week. This defeats the purpose of carrying it around. I had a tacklife before & it would hold a charge for months. Wouldn’t buy again.
jason –
Great jump pack!
Good jump pack, but don’t buy it thinking it’s a good power bank. It isn’t. Charged my phone 1 and a half times, and was dead.
Tricia Knox –
Great
Great
LG –
Easy to use
Easy to use and compact
BigFat Dude –
Must have Item
Real compact and very needed for all vehicles,,, plus you can charge other appliances as well
roberto sanabria –
Función
Exelente producto , pequeño y muy práctico
Michelle Parton –
Quick start when needed
I got this when I was having battery issues with my car and this little box got my car started and help me last a little longer on a dead battery
Nolan & Vanessa O’Brien –
Strong enough to start silverado 4.8
A long time ago AAA pulled up with this to start my truck. Since then i wanted one. This lil thing jumped my 2008 silverado 4.8 with no issues had to use it before I had the chance to charge it and it turned my truck over so easy. Highly recommend. Next purchase will be the one step above from this. Love it.
David D –
Muy bien pero 5 Estrellas
Su cargador vino dan̈ado. Para no darme la tarea de devolverlo compre otro cargador.
Anim Amarsingh –
Item did not restart my battery!!!!
Did not restart my battery. Tried again and nothing. Tried recharging and error LED light comes on and does not want to charge. Waste of money.
Bob spencer –
GARBAGE
Don’t waste your time! These things are COMPLETE GARBAGE! I’ll start by saying I’ve ordered 2 of these now. The first one came, I charged it up, put it in the truck ready for use. That time came 2 weeks later, pulled it out (fully charged, never been used) this piece of garbage couldn’t EVEN turn over the engine of a car with a dead battery. Disconnect Ted it, turned it off, tried again, nothing. Now the battery on this unit was COMPLETELY DEAD. After two attempts to Jumpstart a vehicle within 5 minutes. Okay, things happen in the world, it’s possible to get a bad unit. Contacted Amazon for a replacement. They sent one right out, just got it a couple of days ago, unboxed it, put it on the charger to get it all set to go. 12 hours later, lowest red bar is still slow flashing like it is charging, but battery shows zero charged. I’m DONE. These units are obviously trash that cannot be relied upon in an emergency. Glad I found out now instead of dead of winter, stranded somewhere. I guess I’ll have to stick to jumper cables and the goodwill of someone willing to lend a hand if needed. Thanks for LESS than Zero NOCO
Jay –
Great product
Great battery life. Portable and easy to use.
M. Smith –
Great for power outages to power devices via the USB.
Great for power outages to power devices via the USB. Have not used it to jump start; it should be fine.
dipesh patel –
easy to use
The NOCO Boost Plus GB40 1000A UltraSafe Car Battery Jump Starter is a standout device in the world of portable jump starters. Known for its impressive power, compact design, and safety features, this jump starter offers a dependable solution for reviving dead car batteries and ensuring you’re never left stranded. Performance and Power: The GB40 boasts a robust 1000A peak current, providing ample power to jump-start most 12V car batteries, including those in larger vehicles like trucks and SUVs. Its performance is impressive, allowing it to jump-start a dead battery quickly and efficiently. The device’s high capacity ensures reliable power when you need it most, making it an essential tool for emergencies.
Mr. Beast –
10 out of 10!!!
Gave my truck a jump, charged mobile devices, and has a tremendous led flashlight. Fyi,,, it takes an android charger. I highly recommend investing in it!
Clmk –
Works
Nice to have on hand, smaller than I thought it would be.
Thomas Miller –
Charges Quickly, Works Flawlessly
In the intense summer heat, the battery goes dead in my small SUV every now then. It just goes with the territory here in the Southwest. I got this delivered to my doorstep 2 hours after ordering it. It was already charged. Gave my battery a quick jolt, and the battery has actually worked better than ever. Must have item to keep in your vehicle.
RonnieB –
Compact
Should have read the manual before using. After reading the manual worked great. That’s with a completely dead battery.
Donna barras –
convenient
small
Jose Rodriguez –
¡Que es un engaño, no sirve!
¡Mucha propagando, vendiendo la utilidad de este aparato que cuando más falta le hace a uno – diez meses desde que lo compré, sin jamás haberlo utilizado; simplemente no funciona! ¡Dinero botado! ¡NO BOTE SU DINERO EN ESTO!
My Review –
Buy it
Dont want to be stuck without it great price on Prime day many uses besides jumper box
pete –
Very good gadget
A must have in your car trunk.
Excelente! Funcional y practico para armar –
Suuuuuper
Es un producto super funcional, entiendo porque es numero uno en compras. 100% recomendado
Lisa Vargas –
Failed unit
Bought this less then a year ago and used it maybe 6 times. Now it won’t charge and makes a crackling sound when it’s plugged in. Only red light flashes. Unit is kept in perfect condition in original packaging and still failed. No warranty from manufacturer or Amazon. This sucks.
Mark W. –
Excellent Product!
This product is well worth the money! It can jump several vehicles on a single charge and it’s so much easier to use and portable compared to jumper cables. I carry it with me everywhere.
justin –
I wish i would have gotten one sooner!
Very dependable, it jumps my 40 hp tractor from completely dead with no problem!!! Get it you won’t regret it…
Cheap Leather and Plastic –
It’s nice
I haven’t used it to jump start my car yet but it’s a good phone charger and flashlight
Aggie2008 –
Excellent
I’m on the road often and get worried about being stranded with an aging car, so I purchased this as a precaution. Went to start the car one day and battery was dead (no warning). After fully charging the jump starter, I was able to jump off my car without an issue and go buy/install a new battery. Very happy with my purchase and ease of use.
Kenneth –
Device stopped jumping cars but everything else still works fine
The item faile me when I needed most. I used this item maybe 7 times jump starting cars and now it simply do not work. No drops of the device or anything that would intereferre with it’s operation. I would like to hav a replacement.
Lisa Lindsey –
Emergency backup
We got this as an emergency backup for our motorcycle….works wonders and will also come in handy for our truck or car also if need arise.
Matty –
Has bailed me out more than once
For the time and money cost of a battery jump service, this is worth it. I’ve bailed myself and a couple neighbors out over the last couple years. We have them in both our cars.
Eva T. Murdock –
What I wanted
Was what I wanted
Lela Draughn –
So easy to use!
We bought one of these for every vehicle and each of our children. It holds a charge!
BRUCE C. –
Jumps start cars tractor
Easy to use though it could use a little longer leads. Used it to start my tractor Works great