NOCOBoost GB50: 1500A UltraSafe Jump Starter Power Pack – 12V Car Battery Booster, Portable Power Bank & Jump Leads - For 7.0L Petrol and 4.5L Diesel Engines

I bought this to primarily use with my Aprilia RSV1000... an old Italian 1000cc V-twin motorcycle renowned for starting issues in cold weather unless your battery is perfect (and I have a Noco Genius10 looking after the admittedly pretty old AGM one on this) and/or that you use the bike frequently.To be fair, this is overkill for this application given its claims to be able to crank an engine six times the size. And so it would prove. Every time I have left the bike for a couple of weeks out in the cold weather and it has refused to start under its own steam... I plug this in (using the highly recommended - if a bit expensive - Noco GBC007 cable if you also use a Noco Genius charger... but a Noco GBC002 will do if you don't) and as sure as eggs are eggs, it will start... even on those horrible 'wide open throttle' long cranking starts, this thing does the job easily. There appears to be way more than enough cranking amps available as the starter spins fast and long and the engine really doesn't have a choice but to fire.As I said, it may well be overkill for this and it's likely that the bike isn't really testing this at all... but in this application, this guarantees a started motorcycle. From fully charged, I've used it maybe a dozen times and it's still showing a green charged indicator so it's definitely not really being challenged. On a 3 litre diesel, probably a different story.Hard not to recommend it though. Easy to use. Compact. Looks the part. Starts the engine. Job done.

I was going to by the 90 model but I like overkill so I went for the XL. I'm actually quite glad I did.I read the instructions and plugged it into my USB charger. It took 4.5 hours to charge which is I think what the instructions said it would be.I have always been a bit sceptical of these little car starters because they look so small compared to the big lead acid powered ones of old. But it does do the job and it does it pretty well. I was convinced when a friend told me that his "90" model started his 5 Litre AMG Merc but all the same I wanted the extra comfort zone for my high compression 4.2 Litre Audi RS5 so I bought this bigger XL model. This model is supposed to be able to start an 8 Litre car. Three times.It does the job perfectly, however I would question its ability to do it three times in a row without charging. I think that's pushing the boundaries of belief. For example, on my 20 HP Briggs garden tractor engine, the thing was flat after three 10 second cranking sessions. But crank it it did and had the petrol been actually going into the engine <grin> it would have started. And I've no doubt that as soon as I clean out the crud from its 20 year old carburettor, it will...I also bought the optional carry case which is a nice design and this whole thing will fit nicely in my glove box until it is needed.I only have one slight complaint: The crocodile clips to connect the battery ought to be on a longer leash. On a big engine you have a big battery and opening these out to the full extent of their Y makes it a very tight stretch on my battery.

Great booster and works well.Tip: I connected the booster to my car battery and it would still not start. I eventually had to charge my battery and only discover afterwards, after watching a YouTube video; that if your battery is too flat, the booster will not tegister your battery on the first setting.Press the RED exclamation button and it overrides the 'protection' features and supplies a boost past the battery and directly to the starter which then starts your car.

Started my truck with no problem after the battery died overnight. Compact and easy to use. Holds a charge well and feels solid. A great backup to keep in the car.

Brilliant product but would like a little more detail about how to avoid the cancer / reproductive harm risk?!! Is this from general sensible use or just if I break it open & try to eat it?!!!

This is a great product for starting the car when the battery is flat. Convenient and relatively lightweight. I’ve used it when the car has been left at the airport for a few days and won’t start (can’t find the source of the leaking voltage).I now use a mini solar panel as a trickle charger.

What a life saver to have this on hand, or in the back of your car! Gotten myself, friends and strangers out of trouble more than once! Well worth the price!Charges nice and quickly so you're not caught short, and ready to start your car when the power in your battery isn't up to the task!A nice sturdy build, and small enough to not worry about storing it anywhere specific!

Doesn't hold a charge for very long, 2-3 weeks before needing a recharge. Unit has packed up after 8 months and cannot be recharged. virtually impossible to get support. Not cheap and definitely wouldn't recommend it. I have noco battery charger which has been faultless so far. Seams a bit hit and miss.