Boost X GB155: 4250A UltraSafe Jump Starter Power Pack – 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 10.0L Petrol and 8.0L Diesel Engines

Bought for work to use over winter for our fleet of vans. Definitely good quality and starts the batteries with no worries. Easy and quick to charge up. Wouldn’t be without it

GOODNESS ME, this thing packs a huge punch. Started my 4x4 that had a completely kaput battery in a matter of 2 seconds. Not cheap but its an awesome bit of kit

Easy to use and effective.

Doesn't come with instructions! You may think, "well what could go wrong, it's a Jump starter", but there is no explanation how to use this device on keyless entry, start button cars, no explanation of using the "override button" etc or other "boost" functionality. In the 'what's in the box' photo on the advert for this item, there's an instruction book shown. It's not an instruction book, it's a 1cm thick, very small book you that you can't read where only 3 pages are in English, the rest is multi-languages for CE, and guarantee purposes. So you have to go online and read various articles written by NOCO. My 10 year old could write better and then there's disjointed videos that are meant to demonstrate how to use it. The listed spec and functionality sounds good, but it's pretty useless if there's no explanation of how to best use this device. I have a Masters in Electronics, this should be simple to use effectively, but you can quite easily misuse this unit and cause damage. I really wanted this unit to be good in real world usage, but without a clear explanation of how to use, its a waste of money. I expect more when you spend £350+ on the unit, extra leads, charger and a NOBO fitted case, you do expect a user manual or at wordt, legible intructions online! Returned for refund. I won't be buying anything fron NOCO again.

Absolute beast of a jump pack. Just remember to keep it topped up to prolong its life as per manufacturer's instructions and should last years

Superb jumppack. Did not struggle with a 5.0L diesel engine. I only gave four stars because the supplied cable has USB A to C cable. I think an A to C adaptor should have been included. But this is not reflective of the unit's performance.

Great product. Very powerful. Fully recommend.

Delighted with my Noco battery jump starter. I purchased a different jump starter prior to purchasing the Noco model. The Noco is a real professional piece of equipment. You will not be disappointed with it.