NOCO Boost X GB45: 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 ReviewIf 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.

It works, buy it !!! This is an excellent bit of kit, it will start your car up with a completely flat battery with no effort whatsoever. It’s very small and packs in your glove box if you so wish. It’s so easy to use and changes up from a USB point so you can charge it while you’re driving. Don’t be fooled by its size. Would definitely recommend.

This Noco Booster is more expensive than equivalent products but the cost is justified by the rugged design and solid build quality and comprehensive UI provided by the various Indicators on the top of the unit.It is easy to use thanks to the modular design which allows the battery clips to be separated from the booster unit. A significant upgrade from the older and heavier lead acid based jump starters, being lighter and taking up much less space. Being able to recharge via USB-C makes the product much more flexible with no booster specific charger or cable to lose or break.After boosting/jump-starting a 2.0L petrol engine the booster seems to be at 2/3 capacity and takes 1-2 hours to charge back to 100% with a USB-C laptop charger.

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 buyThe 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.

Hasn’t let me down yet. Started everything I needed to start in the motor trade. A 2.0D would been the biggest engine it has started for me. Would been a 5 star but I have cheaper jump pack which shows 5 bars after the 1st jump still but this one always drops a bar. I don’t know if this is right or wrong? Best thing about it is the light weight of it. Saves carrying the works heavy duty jump pack out to a car.

Bought to overcome battery issues on my Peugeot Boxer Motorhome, arrived partially charged but charged anyway for peace of mind, uses USB charger, seems to charge fairly quickly, under 30 minutes, Have had to use once already on the van, easy to use, wires long enough and van started immediately, impressed, LEDs on unit went from green to amber so don’t know how many ‘jumps’ it may have, have recharged again just in case. The unit is quite compact and has a cloth bag, other accessories are available. Went for the slightly bigger unit as other reviews suggest to. Used on Peugeot Boxer 2.2 Motorhome.

I can't express the security that I feel knowing that I can start my motorcycle without having to find a hill... It works every time my battery is flat. I have helped others with this. It has started motorcycles, cars and even a van. It makes an OK power bank but only charges my phone twice so I don't typically use that functionality unless all my other power banks are flat.

Bought this product in June 2025 and I have charged it once but it will no longer charge so waste of money!