NOCO Boost GB40 – 1000A UltraSafe 12V Jump Starter
Powerful, portable, and safety‑focused – the NOCO Boost GB40 delivers instant starts, emergency power, and reliable performance in a compact package.
Features
- Instant Jump Starts – 1000 amps of peak lithium power to start dead batteries. Supports up to 20 starts per full charge on vehicles with engines up to 6.0L (gas) and 3.0L (diesel).
- UltraSafe Technology – Patented spark‑proof and reverse‑polarity protection for foolproof connections to any 12V vehicle: no sparks and no incorrect hookups.
- Portable Power Bank – Built‑in USB power output to recharge smartphones, tablets, and other USB devices. Fast recharge time – fully recharges in about 3 hours.
- Integrated LED Flashlight – 100‑lumen LED with 7 modes (including SOS and strobe) to illuminate repairs, emergencies, or low‑light conditions.
- Compact, High‑Discharge Design – High‑discharge lithium battery delivers exceptional starting power in a lightweight 2.5 lb form factor – ideal for glove boxes and emergency kits.
- Rugged and Weather‑Resistant – IP65‑rated housing with rubberized over‑molding for protection against water, dust, and impact. Comes with high‑conductivity clamps for efficient energy transfer.
Specifications
- Peak Current: 1000 A
- Engine Capacity: Up to 6.0L gas / 3.0L diesel
- Starts per Charge: Up to 20 (varies with engine type and conditions)
- Recharge Time: ~3 hours
- LED Flashlight: 100 lumens, 7 modes (including SOS, strobe)
- Weight: 2.5 lb
- Ingress Protection: IP65
What’s in the Box
- GB40 jump starter
- Heavy‑duty clamps
- USB‑C charging cable
- Microfiber storage bag
Backed by a 1‑year warranty and engineered in the USA.
Shopper –
This battery jumper works great!!! I had a battery that was brand new but it started giving me trouble. I charged up this jumper and decided to take it with me when I took my pup to in for a check up at the vet. Afterward, my truck would not start. This jumper worked effortlessly and got my truck going on the 1st try. I was so glad I had gotten this. I took my truck back where I got my battery from and they put a new battery in my truck that was the correct required size for my truck. I bought a hard carry case for this jump starter and I take it with me everywhere. It’s small, light weight, very easy to use, and it may come in handy again someday.
Kyle –
The NOCO Boost GB40 has been a fantastic addition to my gear. I originally picked it up as a backup jump starter for my EV if the 12V ever died, and it’s performed flawlessly. The unit feels solid, the controls are intuitive, and the overall build quality is excellent.
I really appreciate the extra features — the built-in flashlight is bright and genuinely useful, the USB ports make it a convenient power bank, and USB-C charging is a huge plus. The included storage bag keeps everything organized and easy to grab in an emergency.
I’m impressed enough that I’m buying one for each of our vehicles. It’s compact, reliable, and well worth having on hand.
john –
Arrived almost fully charged, already a Plus. Its super simple to use, hook up the leads to corresponding colors and press the button and watch the light show.
This jumped my car many many times so far, almost everyday I’m using it and I haven’t had it go below 4 bars yet! Amazing 🤩
It’s reliable, easy to use, good value, super compact and has a little carrying bag to stuff it in.
Tremendous, and I highly recommend this.
Bryan M. –
I’ve used this to start various cars in my collection and it is wonderful and works very well. My only ding is that leads are not long enough for some situations. If each lead were 2 feet long, it would be prefect.
خالد عبدالرحمن –
ممتاز وفعال في اداء المهمام تم استخدامها لاكثر من مره لي ولجيراني ابد ركبها على الأصابع وأتركها لمدة 10 ثواني وشغل 👍
Winston –
I cannot recommend the NOCO Boost GB40 enough. This device isn’t just a gadget; it’s an absolute game-changer and an essential piece of equipment for anyone who drives. The 1000A peak power is more than capable, easily starting my completely dead V6 truck engine in seconds, which is far beyond what those cheap battery packs can handle. The “UltraSafe” technology is where the GB40 truly shines—the peace of mind that comes from knowing I can’t accidentally reverse the polarity or spark is priceless, making it genuinely easy for anyone to use. It’s compact enough to fit neatly under a seat or in a glove box, and the built-in flashlight is bright and incredibly useful. Forget waiting for roadside assistance or begging strangers for a jump; the GB40 makes you fully self-sufficient. Worth every single penny!
Raul –
Pues simplemente cumple su función, pero de largo! Se quedo mi suegro sin batería, un coche diésel un vw golf 1.9TDI, y lo pudimos arrancar unas 5 veces, no seguidas, pero pudieran haber sido más. Nos saco de varios apuros, pudiéndolo usarlo como powerbank estando en urgencias… y la linterna es más que decente para su cometido.
sin duda volvería a comprarlo. No puedo estar más contento.
A real gone Kid –
Very impressive. I bought this to replace another similar device that I previously purchased that just didn’t have the power to start my 2 litre BMW car on a cold day. This product was the real deal. All you do is connect it to your car battery terminals and just start your car. My battery was draining flat on a daily basis but this product started my car in seconds every single time. It’s well made and so easy to use and best of all, it can start an completely flat battery. Watch some of the videos on YouTube about this item and the tests it has been put through for further proof of just how good it is. Best tip is to use it when it is 100% charged.
Daniele –
Ottimo avviatore! Il NOCO GB40 è compatto ma tira fuori una potenza incredibile: avvia l’auto in pochi secondi. Sicurezza al top, non fa scintille e si collega senza paura. La batteria dura tantissimo e si ricarica via USB. Perfetto da tenere sempre in macchina!
Sam –
I actually bought the NOCO Boost GB40 because of a camping trip with family. My truck battery died out there, and my brother-in-law pulled his GB40 out and jumped my truck in seconds. That was all the convincing I needed. As soon as I got home, I ordered one for myself.
Since then, I’ve used it a couple of times to help other people, and it’s worked perfectly every time. It’s quick, easy to use, and way more convenient than dealing with jumper cables or hoping someone nearby is available to help. The size is great too — compact enough to keep in the truck without taking up any real space.
The GB40 feels solid and well-built, and the safety features give me confidence when I’m hooking it up, especially in less-than-ideal conditions. It holds a charge well, and I like knowing I have it ready just in case something goes wrong with my battery again.
Overall, this jump starter has become one of those “must-have” items I keep in my truck at all times. It’s reliable, powerful, and already saved me more than once. I’m glad I bought it, and I definitely recommend it.
JesusTR –
Excelente arrancadores. Mi camioneta con motor 4.6L la arrancó super rápido. Igual mi auto. La he usado unas 4 veces y muy bien en todas
Amazon Customer –
It’s been 2 1/2 years since I purchased this and i have nothing but praises for this magic box… It spends summers in the boat because if/when I leave the Garmin and VHS on for a couple of weeks the battery is inevitably dead… It travels around lost in the bottom of the truck toolbox until I’m on a jobsite and something has a battery that’s been around since the first Bush administration… It’s the ultimate “Keep it Simple Stupid” tool… It’s got safety features built in that your teenager can’t even screw up – you can’t cross the positive and negative cables and fry something like you do with jumper cables, It has a built in flashlight that has multiple brightness modes and multiple flasher modes… it always seems to have enough juice left to crank that dead battery “just one more time” – it holds a charge very well… It’s jumped large equipment engines and saved my butt when the phone charger was “borrowed” by one of the kids… I’ve jumped off batteries for folks who have grown old waiting for Triple AAA to arrive and their first question is ALWAYS – where did you get that cause I’m buying one just like it… Few things in this world really work like they’re supposed to – from the guy who’s supposed to be changing your oil in 10 minutes guaranteed to those cheap bule pills – But this little box is the Real Deal … you can buy one now and have it when you need it – or you can buy it while you’re sitting beside a busy interstate in the August heat wondering why you waste good beer money on Triple AAA… OBTW – I paid full price for this and unless I get really lucky nobody is going to pay me anything for a “Good Reveiw” … God Bless
You will NEVER regret buying this … but trust me – someday you will SERIOUSLY regret NOT buying one. Bottom line -everyone with a car, boat, truck, motorcycle, golfcart, phone, laptop, needs one – at least that’s all the things I’ve cranked with it…