Boost X GBX45: 1250A UltraSafe Jump Starter Power Pack – 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.5L Petrol and 4.0L Diesel Engines

Picked this up for van stash and roadside backup—wanted something that could fire up a flat battery without dragging out jump leads or waiting for help. The GBX45 delivers. 1250A peak current is no joke—started a diesel van and a 2.0L petrol car with zero drama. No sparks, no hesitation. Lithium build keeps it light, and the casing’s rugged—feels like it can take a knock. USB-C input/output means it doubles as a power bank too—charged a phone and a torch off it while camping. LED light’s bright enough for night work, and the clamps are solid—no flex or cheap feel. Good stash-ready gear for anyone who wants peace of mind on the road without the faff. 👍 Pros ✅ 1250A peak—starts most cars and vans easily ✅ USB-C power bank—charges phones and gear ✅ UltraSafe tech—no sparks or reverse polarity risk ✅ Compact and rugged—easy to stash in boot or cab ✅ LED work light—handy for night use or emergencies 👎 Cons ❌ Premium price—worth it if you want reliability ❌ No hard case included—store carefully ❌ USB-C cable only—no wall charger in box ❌ Not for heavy-duty trucks—check your engine size 🧭 Personal Review If you want a jump starter that’s compact, powerful, and built for real-world use, the NOCO GBX45 earns its spot. I’ve used it across van setups, roadside calls, and weekend trips—no drama, just clean starts and solid backup. Proper stash-ready gear for anyone who wants their battery sorted and their gear charged.

Fantastic piece of kit and great quality, super easy to ease with its compact size! Always have problems with my Mercedes vito van battery going completely dead to the point of not even operating the central locking when it’s been stood more than 5 days or so and this device jump started it effortlessly !!!! Highly recommend, worth every penny!!

Great bit of kit, was skeptical at first. Been having issues with my battery in my Vauxhall Grandland X. Recently had a brand new battery fitted but battery keeps going flat after no use after a few days, possible alternator issue. Car wouldn't even get going on jump leads. Tried this on first attempt and didnt start, however it did try and turn over. What I didnt realise is, once plugged in, ALLOW MINIMUM OF 60 SECONDS before trying to start the car to allow the battery pack to pump some juice into the battery. Once I tried this, car started first time! One thing to note is that it will only jump start your car once before needing a recharge. But all in all, a great bit of kit in an emergency situations.

Excellent product, was able to jump start my car immediately! It's small, so can be kept in the car. My battery is pretty small (60 Ah) but two jump starts only used up one point if the charge, so it seems powerful enough.

I have a 6.1 litre American Hemi Motor. a rather high compression NA pushrod engine. The battery was 100% dead, I've been having a drain issue and it was the weekend over. At I have to wait 30 seconds for the immobilizer (little lightning on dash) I then tried to crank but sluggish and stop... Damn. it timed out so I thought it was a no go. I pressed the override waited and it started! Phew, it saved me a long walk through town to borrow the garages jump box. (very friendly bunch)

I was a bit sceptical about this after calling the AA to start my Transit Custom about 6 times because of a battery drain somewhere, they struggled to start it with their booster. I ordered this and was amazed on how quick it started the van from completely flat, I couldn’t even open the doors with the central locking because it was so flat, put this on the engine earth and live terminal under the bonnet, really easy, then turned the key and it fired up instantly. I’ve used it twice now without having to re-charge it, I’ve also used it to charge my phone and it has a handy torch too. It’s excellent!!! Well worth the money.

Product that I received was faulty but manufacturer replaced it with a working one that is excellent. I had the product in my car for 11 months before I needed to use it because my car would not start, it was then that I found the NOCO Boost to be faulty. The product has a 12 month warranty, so I was lucky that I had to use it in 11 months!!!! So I suggest you test yours as soon as you buy it. Make sure the lights chase and the 12 volt clear light illuminates. Service support from the USA was very good and the replacement unit is excellent .

Very dangerousGot woke up yesterday morning to a pop.An all the final alarms going off.It was on charge normally over night and it decided to explode, fill my house with gas and smoke and set fire to the wall and our armchair.While me, my wife and my ten month old baby were upstairs but reached out to the company and day only offered me 35% discount on the same model. Very disappointed, end up very shaken up just lucky we where home or it could

Lightweight, USB chargeable, good power for jump starting. Use it for my car and boat.

Ich bin wirklich positiv überrascht, wie hochwertig dieser Artikel ist! Schon beim Auspacken merkt man, dass hier Wert auf Qualität und Verarbeitung gelegt wurde. Alles wirkt robust, durchdacht und absolut stimmig – genau so, wie man es sich wünscht, wenn man etwas online bestellt. Das Material fühlt sich edel an, die Funktionalität überzeugt auf ganzer Linie, und selbst nach mehrmaliger Nutzung zeigt sich keinerlei Abnutzung oder Mangel. Besonders beeindruckt hat mich die Liebe zum Detail – man merkt einfach, dass hier nicht nur irgendetwas zusammengebaut wurde, sondern ein Produkt, das mit Sorgfalt und Anspruch hergestellt ist. Das Preis-Leistungs-Verhältnis ist meiner Meinung nach hervorragend. Ich würde diesen Artikel jederzeit wieder kaufen und kann ihn ohne Einschränkung weiterempfehlen. Ein wirklich gelungenes Produkt, das in jeder Hinsicht überzeugt!

High quality and works as promised

Genial. Vale cada centavo. Tuve oportunidad de utilizarlo a los pocos dias de la compra. Es muy fácil de usar, efectivo, inmediato. Al primer intento de usarlo encendí mi auto sin ayuda. Me parece una excelente compra. Pequeño para traer en el auto, ademas permite ayudar a otras personas sin tantas dificultades de acomodar los autos etc. De ahora en adelante lo traeré siempre con mis cosas de emergencia en el coche. Ah y lo cargue en menos de una hora con un cargador de 30 w, y puede usarse uno de 60w. sin problema.

I own a NOCO GB40 that has lasted many years 7 I believe. It is time to retire it finally. I use it for work at a small dealership and it never fails. One thing I will note from another review is that it WILL activate if the vehicle battery is totally dead. You have to hit the Boost / Override button. There are no real instructions with this unit, just a warning book in several languages. You can find user instructions under support on Noco's website. Just select support / boost jumpstarters, then your model. The unit is pretty self explanatory except the "boost" function. I expect to get many years out of this GBX45, and it has a few extra features. USB-C charging In-Out is a plus, as are the extra light modes. That being said the GB40 has started everything that I tried it on. I use this probably more that most customers will. I did have to replace the jump leads on the GB40, but this was after over 5 years use and rough handling at times. When not being used for work, it resides in my trunk. I have never needed it for my personal car, but I have helped several others over the years. There are several other devices on Amazon that are less expensive with more power supposedly, but why chance it when I know this one should last many years like my last one did. I also buy from trusted brands only when it comes to rechargeable lithium batteries of this size. It is not worth a fire risk to save a few dollars! Cheaply assembled Lithium batteries are noted for overheating while being charged. At work we have had two that swelled to the point of being unsafe to charge. Not the NOCO.