NOCO 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.

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 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.

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.

Very well made and fully charged via our lap top within around eight hours. Initially we had quite a few bulk charge warnings, (whatever that meant). The manual was not at all helpful. Tried to charge direct from mains, (as I mentioned, the manual did not appear to provide any guidance) but eventually found that charging via the lap top seamed to work better. Was on the verge of returning the product but it did eventually fully charge. Guess the proof of how well it works will be when we get a flat battery. It does look well made and fingers crossed, it will prove to be well worth the money.

Bought this as my 2015 diesel astra had stood for 3 months through winter after having foot surgery. I was a bit skeptical at first, however endless good reviews gave me confidence to buy The booster arrives approximately half charged, so charged it fully using my phone charger before use. Charging input is USB C. The booster comes with a usb to usb C lead, so will charge from any usb socket. The battery on my mk6 diesel astra was completely flat, not enough to work the central locking. My car was parked 200 yards away, so didn't fancy lugging such a heavy battery home to charge it. Connected the unit, had to use the manual over ride as the car battery was so flat. Left it about 30 seconds before attempting to start, I was expecting it to just about turn over, however it started instantly, and as it would normally. Bearing in mind that the standard battery is quite large, and 80Ah capacity, it's astonishing that it started the car so easily. Very well designed and pretty much idiot proof, and solidly built. There are cheaper alternatives, however I'd rather buy something decent, if a cheaper item doesn't do the job when in an emergency situation then it's money wasted. Chances are that I might not need it again, however keeping it in my car, I'm sure it will help someone else, or myself in the future. Very highly recommended indeed.

Excellent piece of kit multiple uses has certainly helped me on a number of occasions. Simple to use on my Ford Transit.

Used twice then device stopped accepting a charge from either mains or in car charger. This is a common complaint. Customer service don’t respond - waste of money.

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

Buen producto, lo he utilizado ya unas cuantas veces y la verdad es que va muy bien Me decidí por esta marca porque lo vi en varios talleres , mi mecánico lo tiene , por algo será Trae linterna , puedes usarlo como power bank Por poner una pega , podrían poner los cables unos centímetros más largos , ya que los fabricantes cada vez complican más las cosas y las baterías quedan muy escondidas aveces

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.