NOCO Boost Sport GB20 500A UltraSafe Car Jump Starter, Jump Starter Power Pack, 12V Battery Booster, Portable Powerbank Charger, and Jump Leads for up to 4.0-Liter Petrol Engines

I’ve had this booster for several years now and it’s saved me a few times. The battery holds charge really well—I can leave it in the car for months and it’s still ready when needed. Even after use, the charge barely drops, though I always top it up just in case after boosting the car. Definitely worth the price, especially since I chose to buy this instead of replacing the car battery. A professional recovery service once told me I needed a new battery after I accidentally left the power on without the engine running. They charged it and quoted £120 for a replacement. Several years later, I still haven’t replaced it and the car has been fine. I’ve only had to use the booster around three times, which isn’t bad considering they wrote off my battery—one that’s already lasted well beyond its expected lifespan.

Outstanding performance. I just sold my old car that had been sitting there for months unused. I charged the battery with another charger but couldn’t hold a charge at all. First time using this, started up instantly. I’ve used it a good few times and it’s going strong. I keep it in the boot of my car for piece of mind.I would definitely recommend this over other brands

Bought this for my EV as heard stories of 12v batteries not charging on mine. Had it for a while and only used it on some strangers BMW that wouldn’t start. Still had near full charge even after a few months of being in the boot .Like that it has usb charging aswell.

Many 2021 and later Yaris and Yaris Cross owners will be aware of the tendency of these cars to run the 12v battery flat, sometimes when not used for just a few days. After my first incident in a car park which needed an AA call out last year, I bought a trickle charger to top up at home occasionally. At the same time I bought this Noco jump starter just in case it ran flat away from home.I couldn't really review it until this week, when it came to the rescue and easily jump started the car at the first attempt. I charged it once when I got it and not since, so I can confirm it will hold a charge for at least 6 months and probably much longer. The build quality is excellent and instructions simple to follow.Tip for owners of this car, there is a 12V terminal under the bonnet, you don't need to access the battery itself (under the rear seats). Check your manual for details.

Seems well made. Time will tell whether it works when I need it. Couple of minor issues. Instruction manual was missing, luckily it's available online, so I downloaded and printed out the 5 relevant pages. Also the charging lead supplied now is USB-C on both ends. Luckily I have a newer charger with USB-C outlet, but others may not.

Really handy and compact easy to use.

My car is less than 3 years old - 3 weeks ago, the battery failed and I had to call the AA (being an automatic, getting someone to help me bump start it wasn't an option) as I was not at home at the time. Having then done a 2 or 3 longer journeys, it was a bit of a surprise to me when it failed again last week. I felt a bit off about calling out the AA so soon after my previous breakdown, so decided to get the jump leads out and deal with it myself. Except my jump leads seem to have gone walkabout.So that decided me on getting a battery zapper. However, many of the products I looked at had mediocre reviews to say the least. As a person with disabilities, I need a product that I can a) carry without too much difficulty and b) won't let me down when I actually need to use it. So, I decided to spend a bit more than I'd originally budgeted to buy something that didn't weigh almost as much as a car battery itself and had better reviews.The zapper duly arrived 2 days later and having charged it (it took about 3 hours to charge fully from my laptop) took it out a couple of days later to get the car started. And it took me longer to read the instructions than it did to get the car started. The crocodile clips are seriously sturdy and it took me a bit of time to actually get them attached to the battery at the relevant point, but my car started in 30 seconds or so. And I'd barely touched the charge in the power pack.The pack itself has some useful functions and I was waiting on a power cut over the weekend so I could test them out. The USB port for charging other electrical items isn't essential for my needs, but it could come in handy. The torch on it is seriously bright, there would be no chance of a person not being able to see using it. The charging cables are short, but it turns out that they're long enough to do the job required.And the pack doesn't weigh so much that I need to use 2 hands to lift it - something that has to be taken into consideration when one isn't very strong.The only thing that lets it down is the nasty nylon storage bag that comes with it. However, I'm sure I can make a better cover for it, in time

Year old EV refused to start due to flat small(12v) battery. This item recommended by AA to solve any similar problems in future. Not inexpensive but worth the cost for peace of mind.