NOCO 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

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.

Excellent bit of kit. I have the 1000A one. I've used it "properly" to cold-start a 2.5L Diesel VW T4 with a dead battery (including waiting for the coil heater light to go out) and it worked perfectly. I've also just used it to provide 12V to a dead car to get the electrics up so I could get the boot open - again, worked fine. Charges from USB, and comes in a neat box small enough to fit in the glove box of most cars, or the corner of the boot. I know it can also be used as a USB battery bank, but personally I leave it 100% charged and only plan to use it for emergencies. Never go out in the T4 without it now.

Bought this for my daughter who was away at university when her car battery died. The car was a 1.3 toyota yaris. she folloed the instructions and started her car successfully. I was pleased the product came with charge in it to do the job. It's a great little unit she also uses on camping trips to charge her phone from the USB port. She's now a strong independent woman who can jump start her own damn car when she leaves the lights on. :D

The product seems to be good, but it lacks useful instructions. I had a car with a totally flat battery and had mistakenly left the unfamiliar ignition part-way on. I should have removed the key, connected and turned on the GB40.. then long-pressed the boost button to get it started.. then reinserted and turned the key. It took me multiple YouTubes to work this out. But first I'd tried the supplied "instructions." It contained only warnings and disclaimers close-typed in small print and in about thirty languages. I then watched the Noco-recomended YouTube but they'd boosted a battery that was only half-flat for which the procedure is different. Couldn't we have two booklets, one properly labelled "Warnings Nonsense" and another booklet of real instructions IN ENGLISH, plus maybe Spanish and French, but no more.

Please note: this review is based on about 1 week of ownership, so does not related to long term sturdiness or performance. Bought this after surveying all the various options and although there are some cheaper, it seemed like this combined the right capacity, additional safety features and clear design for the purpose. (Some cheaper items look like re-purposed phone battery banks, so I was sceptical how good they would be). My car battery suffered a fairly deep discharge during first covid lockdown and although usable, has never really been the same since. It's a heavy duty stop-start battery on a 2.0 Litre petrol. It's had to be charged a couple of times after standing and failing to start the car, and latterly has been showing signs of draining and failing to start the car after just a few days sitting not being used. So, i bought this as a "get of out jail" - especially if I drive somewhere and then the car won't start to come home. I've already had to use it, and I'm pleased to say that after connecting it up, waiting about 20 seconds to go round and get in the car and start it, it started first time. It would be useful if it displayed voltage when attached, then you could assess just how discharged the car battery is, but that's a minor niggle. For example, I don't know if my battery was just under 11v and the car electronics were deliberately preventing it starting, or whether it was much lower. It's really simple to use and the cables, though short, reach fine from the + terminal of the car battery to the -ve post on the engine wall - without anything dangling into the engine bay at risk of getting caught up. I was also impressed with how quickly it charged up. After receipt, and although showing empty, it only took a few hours plugged into a regular 2amp USB socket on my wall to get it fully charged. Then after starting the car a few days later, I simply plugged it into the USB in the car itself while driving and by my destination, it was fully charged up again ready to be used. (A bit "belt and braces" on my part, as after one start, the device was still showing green for the amount of charge left in it) It actually feels fairly sturdy and easy to grip and hold without slipping (more than can be said for some power bank chargers). Obviously I'm not going to deliberately drop it to see if it smashes open or not :) but it seems perfectly fit for purpose. All in all, i'm very pleased with it and the extra piece of mind it gives until I replace my car battery.

Chuffed to bits with this item! I recently bought a 32yo campervan, and the battery is very temperamental! Bought this on the recommendation of a friend with a similar motor home and it's fantastic. The kit feels solid and took about 2 hours to fully charge, and then it was ready to go - just clip to the battery, turn on, and voila! The battery turned over from completely flat. Have had to jump the van three times since purchasing and the item is still showing fully charged. It just lives under my driver's seat and I feel so confident knowing it's there, it's easy, I can take it anywhere and no more calling out breakdown- Highly recommend 👌

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.

Probably the best car-related investment ever. Easy to use, easy to charge, works every time and has got me and my old banger out of a few pickles.

Mit dem NOCO Boost GB40 bin ich sehr zufrieden. Das Gerät macht einen hochwertigen und durchdachten Eindruck und gibt ein gutes Gefühl, es im Auto dabeizuhaben. Gerade als Starthilfe ist so eine kompakte Lösung sehr praktisch, weil man im Ernstfall schnell reagieren kann, ohne auf fremde Hilfe angewiesen zu sein. Positiv ist außerdem, dass das Gerät handlich ist und sich gut verstauen lässt. Auch die Bedienung wirkt unkompliziert und alltagstauglich. Insgesamt ist das eine sehr praktische Kombination aus Starthilfe und Powerbank, die ihren Zweck zuverlässig erfüllt. Für unterwegs oder als Sicherheitsreserve im Auto aus meiner Sicht eine klare Empfehlung.

Perfect apparaat om een lege accu te starten

J'avais déjà testé ce produit au canada les professionnels travaillent quasiment tous avec la bas et je comprends pourquoi je viens de le tester sur une batterie de moto et elle a démarré littéralement en deux secondes, j'ai juste eu relier les câbles au boitier, connecter le tout a la batterie et appuier sur ON et la moto c'est rallumer directement. On sent la qualité du produit surtout dans les pinces cet achat est vraiment une valeur sur, je ne le regrette absolument pas. C'est rapide simple et efficace tout est fournit avec une petite house de rangement le seul défaut du produit est que la boite de rangement en version solide est vendue séparément et elle est un peu cher.

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

Good