Boost GB40: 1000A UltraSafe Jump Starter Power Pack – 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 6.0L Petrol and 3.0L Diesel Engines

Brilliant bit of kit, actually works. I am always sceptical of these units and went for a brand that is well known and trusted, and I am glad I did. I have a 2.2l Diesel and it started it first time, so power wise, no issues. Really easy to use, simple to charge. Comes with a small bag to store everything in, which is nice. Cable lengths are short but not an issue. My car's negative point is covered in my car so the leads were long enough for me to connect to a grounding point and the positive point on the battery. Kit seems robust enough so should be pretty durable, it doesn't feel cheap.

I’ve had this for a couple of years now so have had chance to use it now and again. It started my wife’s (1.4L petrol) engine immediately when the car battery went flat, and again the next day, without a recharge in between. I had less luck trying to start the 2L petrol on a Mazda I had SORNed for two years during the pandemic - but it turned out the battery on that was completely gone (along with the bodywork of the car, sadly). So it definitely works for jump starts but it’s not going to provide you with a miracle. I have also taken this battery on a few camping trips. Its solid, rugged design makes it much better suited to tent life than are those slim portable batteries designed for business trips. It also has a decent torch built-in, and you can never have too many of them when you’re camping. I’d estimate it can recharge a modern iPhone from almost dead to full approx three times along with occasional use as a torch - so it can supply a family for a night or two, provided the kids are round the campfire not hiding in the tents on their iPads. You probably wouldn’t want to use it heavily for camping, as like any battery it may degrade to the point where the primary car start function fails, but it’s a nice bonus. I’m pleased with this purchase. It’s a handy device to keep in the boot of your car at all times and has the bonus capability of providing battery power outdoors. Even if you have other cars around, it’s easier to use this than traditional jump leads: you don’t need to move two cars close enough for the jump leads to reach, or open two car bonnets.

I'm writing this to reassure anyone like me, who is hesitating because of the negative reviews. They are rubbish - it does work. After many weeks sitting in the drive during lock down, my 2L diesel car would not start. The radio was working and the locks opened, but when I tried to stat the engine, the starter turned over slowly and then died completely. So the battery had enough power for the electrics, but not enough to start the engine. Trying to arrange someone to come and jump start it would have been difficult with lock down and social distancing, so one of these starters seemed like the perfect product. I looked at various models and brands, but they all had negative reviews. The NOCO was the one which looked most professional, but I was again put off by the many reviewers saying it was useless, didn't work, and in one case saying the RAC were laughing at it for being Mickey Mouse. If I had been relying on the Amazon reviews, I wouldn't have bought it. But I was telling a colleague about my car being dead, and it turned out they had this model, and they were raving about it. So I took the chance and bought this one (GB40) Well the negative reviewers are either lying, or didn't read the instructions.. It's not junk, it's not a toy, and it really works. I plugged it in to the wall when it arrived, and it was fully charged in a few hours. I didn't have time to take the car out for a drive that evening, so I just unplugged it and stuck it back in the box it came in. Next evening, I connected the cables to the car battery, still a bit unsure whether it would work. The instructions didn't really clarify what to expect, but it initially made a clicking noise and seemed to be trying to read the battery. However, from the instructions, I knew I would need to press the boost button, which I did (for the specified 3 seconds), and the white LED came on as detailed. Got into the car, turned the key, and bingo. It started first time. And the charging lights showed it was still green. It was great to be able to choose when I want to start the car up, instead of having to arrange a jump start with someone else. And given the situation with lockdown, it's nice to know I've got this on hand in case the same thing happens. I can see why my colleague was raving about it - you know how much of a hassle jump starting your own or someone else's car is...and this just makes the whole thing a doddle. And since it's so small, it feels a bit magic too! So do not be put off by the negative reviews. It was so easy to use and worked so reliably, I can't see why anyone would claim it's useless. I can only assume they didn't read the instructions (a hefty three or four simple paragraphs).

Ordered NOCO GB 40 March 2023 as a back up and had no use for it until recently in September 24. Car needed a jump start after elderly driver got housebound and we had a cold snap followed by storms. Amazingly, it worked first time but we had regularly topped up the battery on the charger every couple of months to make sure it maintained a charge for when we need it. I think if you let it discharge in a cold place you might struggle to get the NOCO to hold a charge again. I would also advise recharging it that same day to make sure it works when you need it. It is really easy to use and takes minutes rather than waiting hours for your breakdown cover to arrive and losing the no callout discount. I've used this twice so far and the first time it took 50% of battery pack charge to start car, but after recharging took significantly less out of the pack for the subsequent jump start where we recently went through a cold snap and storms. I advise giving it a minute when you connect it to give the battery a little charge (on mine there was a ticking sound that indicated something positive was going on) and then take it off immediately after the engine is running. Since then I've also bought a NOCO Genius 2 charger to keep the car battery in optimum condition when its not being used and found since there is no need to jump start. The NOCO GB 40 is a jump starter only it wont repair the condition of your battery you need a trickle charger for that.

First Impressions: I bought the NOCO Boost Plus GB40 Jump Starter for peace of mind during winter, and it has already proven to be a lifesaver. The compact design makes it easy to store, but it’s packed with power. I’ve used it twice already this cold winter, where car batteries tend to struggle, and it has jump-started both my vehicles (a petrol engine and a diesel engine) without issue. Design and Build Quality: The GB40 Jump Starter is built like a tank. It feels sturdy and durable, and the compact size makes it easy to handle and store in the car. The LED indicator lights and the easy-to-use clamps are great features, making it straightforward to connect and get to work. It’s also lightweight, so it doesn’t take up too much space in the boot. Ease of Use: Jump-starting with the NOCO GB40 is a breeze. Simply attach the clamps, press the power button, and the device does the rest. I love that it has an ultrasafe design, preventing any risk of sparks or reverse connections. It’s a super easy and quick process, and the 12V battery booster delivers consistent power every time. It also has a handy portable powerbank charger feature for other devices, which is a nice bonus. Performance: Performance-wise, the NOCO GB40 has been spot on. The 1000A of peak current gives plenty of power to start up larger engines, and I’ve had no trouble starting both my petrol and diesel vehicles in freezing conditions. It’s powerful, efficient, and quick to deliver the juice when needed most. Value for Money: For the price, the NOCO Boost Plus GB40 offers fantastic value. It’s not just a jump starter; it’s also a powerbank charger for your devices, and it’s compact enough to be stored in your car without taking up much space. Considering how reliable it is during winter, it’s definitely a worthwhile investment to keep in your vehicle. Pros: ✔ Compact and durable design ✔ Powerful 1000A peak current for jump-starting both petrol and diesel engines ✔ Ultrasafe with spark-proof design and reverse polarity protection ✔ Portable powerbank charger for devices ✔ Easy to use with quick jump-starting process ✔ Great value for the functionality it provides Cons: ✖ Might be overkill for smaller, less demanding engines ✖ Not the cheapest option, but the performance and safety features justify the cost Final Thoughts: The NOCO Boost Plus GB40 has been a game-changer for winter driving. It’s easy to use, reliable, and delivers plenty of power to keep your vehicle running during those cold mornings. If you’re looking for a jump starter that’s safe, powerful, and multi-functional, this is a great choice. Rating: ⭐⭐⭐⭐⭐ (5/5 stars) – Reliable, powerful, and perfect for winter mornings!

Was hoping it would "be there" when needed. It came part charged and I charged it fully. Ended up using it within days to jump my 2020 Fiat Ducato 2.3 diesel van. No problems.

I bought this to replace a 6 year old, 500A, £45, no-name brand USB jump starter that was still starting the engine first time but only giving me 2 jump starts before needing to be charged, when it previously managed around 10 jumps. Decided to go for Noco as they are so highly rated but should have listened to the bad reviews.... I got the pack fully charged and tried it out on my 2.0L Diesel which regularly goes flat as something drains the battery and it fails to start if not driven every day- really should get it sorted! The Noco failed to start the car twice in normal mode so I turned on the Boost/override mode. This just about got it started but sounded like it struggled. (I waited about 30 seconds each time before starting the car) When I disconnected the charger I noticed it was almost flat with the red light showing, which was quite surprising as it says up to 20 uses between charges. I re-charged the Noco and tried again 2 days later. It took 2 attempts in normal mode this time and drained the pack to 50%. While the Noco did manage to start my car, I am disappointed with the performance and capacity. No idea how anybody could get 20 jump starts out of this and I really doubt the 1000A claims as my old 500A pack started the engine much faster and more reliably- while also lasting much longer! I did research the Noco jump starters before buying and decided on this GB40 pack over the GBX range as the GB(non X) ones are supposed to hold charge longer and give more jumps per charge, so I would definately not recommend the GBX either based off this experience. The GB40 has also been updated/refreshed but the Amazon listing has some conflicting info- I received the new version which includes a USB-C in/out port and a USB-A out port but no 12V lighter socket port or attachment. It also includes a thin fabric carry pouch (useless), a USB-C to C cable (no charging plug included) and the jump leads, which are short but were fine for me. The older version has 2 USB-A ports (1 in/out the other just output), a USB-A to A cable and a 12V lighter socket charger. The USB-C input is 5V 2.1A so no fast charger needed, pretty much any USB capable of charging will support this nowadays. Battery says it is 24Wh. If charging a phone from the USB port @ 5V 2.1A this would give 4800mAh but you would lose some of that as it wouldn't be 100% efficient so not enough to give a full charge on most modern phones. The jump leads seem high quality and have a strong grip. Connecting the leads to the power pack is not as easy as with other jump starters- have to push it quite hard to get it in, and it is not super clear which way round it is supposed to go in as the hole/plug is round-ish with no obvious markings- you have to look at the shape of the terminals inside the plug and socket and match them up (one is round, the other square). Unfortunately the jump starter I was previously using is no longer being sold so I will have to return the Noco and give another brand a try.

Easy to use, will struggle a bit though if you have very weak hands, good quality

Perfect apparaat om een lege accu te starten

ممتاز وفعال في اداء المهمام تم استخدامها لاكثر من مره لي ولجيراني ابد ركبها على الأصابع وأتركها لمدة 10 ثواني وشغل 👍

Good

Extrêmement facile d'utilisation et fonctionne parfaitement. Très compact et livré avec pochette et pince (câble très court mais on pose le booster sur la batterie donc ca va). Rechargement avec chargeur de téléphone 35w un peu long mais normal, et les voyant indique l'état de chargement (très pratique). Perso, j'ai démarré ma voiture 3 fois et il était à peine à la moitié. Par contre si vous vous en servez pour recharger votre téléphone, c'est lent et environ 1 charge et demi ... mais ca peut dépanner !

Ho acquistato il NOCO Boost GB40 per pura prevenzione e purtroppo (o per fortuna) ho già dovuto usarlo un paio di volte. È un prodotto eccezionale che ripaga ogni centesimo speso. Nonostante le dimensioni compatte, la potenza di 1000A si sente tutta: ha avviato all'istante un motore diesel senza la minima esitazione e senza dover chiedere aiuto a nessuno con i classici cavi da auto ad auto. La tecnologia UltraSafe è il vero punto di forza: è praticamente impossibile sbagliare perché è protetto contro le scintille e l'inversione di polarità, il che dà una grandissima sicurezza anche a chi non ha alcuna esperienza di motori. I materiali sono robustissimi, le pinze sono di ottima qualità e i cavi sono della giusta solidità. Comodissima anche la funzione power bank per ricaricare il telefono in emergenza e la torcia LED integrata, utilissima se si rimane a piedi di notte. Un accessorio indispensabile da tenere sempre nel bagagliaio. Consigliatissimo!