NOCO Boost X GBX155 4250A UltraSafe Car Jump Starter, Jump Starter Power Pack, 12V Battery Booster, Portable Powerbank Charger, and Jump Leads for up to 10.0-Liter Petrol and 8.0-Liter Diesel Engines

Have been using it for the last 6 months, so far its already paid itself off, jumped a couple of cars from I4 to V8's and it handled every single car with a breeze. Always carry it with me in the car. Battery can be used several times before it needs to be charged (Depending on the engine size & temp), just wished the portable case that's sold separately would have come with it as standard instead of the provided soft cloth pouch. And no charger is included, you will need to get the charger separately if you do not have one.

Bought this for an old Jag 4.2, super impressed how well it spins the engine over, should start anything that’s capable of starting. Seems to have plenty of reserves for quite a few attempts

Not as good as stated in reviews, I believe the reviewers are only using it for one-time aweek or a month at most or for emergencies .Battery died within three weeks!I have years of experience with different products like CAT, Stanley and Clarke and based on the review and working in daily with many cars as most of them either run out of battery or something with holding the current decided to go ahead and buy NOCO GBX155.Unfortunately, it’s not 3 weeks completed this product doesn’t hold the charge or battery. It keeps on for about 5 mins then goes completely off as you see in the second picture. I bought an external fast charger as advised with 120W however, at first worked perfectly then using it for constant not topically right. It’s not for everyday usage just for emergency, even thought if it’s for emergency purposes how can broke within few weeks of work. This product is not reliable...well, maybe for at least one jump.Totally overpriced and useless. In all cases, the device was fully charged. I would like to give back the booster and my money back..

Bought this back in August and it has proved to be a great bit of kit, starting everything from our 1 litre Nissan Figaro to our Hummer h2 v8 6.2 lire, and everything in between. even totally dead batteries can be jumped, so impressed i've now bought a NOCO Battery charger

Excellent every body should have one can’t go wrong

I purchased this Jump Starter pack for my 2.2 313CDI Mercedes Sprinter. I have purchased other cheaper packs before and found it to be a false economy as they rarely worked if left for a day or two after charging.This GBX155 starts my van even after being not used for a month and also at a faster rate than the van battery ever did, even when it was new.My friend is a farmer and uses the same pack to start his tractors.I absolutely love this product including the light so jumping in the dark winter mornings is no problem.The only disadvantage I would say is the weight, It's not lightweight, but wouldn't expect to to be to jumpstart large vehicles.

I can't honestly comment on the actual starting power yet, as I've not had to use it in anger yet. ***UPDATE BELOW***However, I can say it seems to be a very well-manufactured item with a top-quality build.I was a little disappointed to discover that it no longer supports a 12v output for Air Compressors etc. Also a little disappointed that no mains charger was supplied; having said that, I managed to go from 50% charge to full in about 3 hours with my 60W Apple Power Adaptor.***UPDATE March 2024***I've used it several times now and can confirm it works very well. It has started a vehicle that couldn't be started with a wheeled booster at a dealership. Charging with the supplied 12v lead is definitely the way to go over a mains charger, as it is much quicker.

Mine has arrived and is faulty, the amazon link sends you to the noco page, the service is awful and they are hard to get hold of, DO NOT BUY!