AstroAI S8 Pro Car Battery Jump Starter, 3000A Jump Starter Battery Pack for Up to 9.0L Gas & 7.0L Diesel Engines, 12V Portable Jump Box with 3 Modes Flashlight and Jumper Cables

execelente aparato para arrancar cualquier carro y de pilón lámpara y cargador de celular sin problema

Not as described 500a it says on the box

Had the chance to test mine out only a couple months after I bought it. A bunch of friends were camping and with 2 early-ish (15-20 year old) Diesel Land Cruisers thought it would be a good idea to use the headlights to illuminate the campsite for a few nights in a row bit not driving on the in between days. The 3rd night they all fell asleep so batteries were absolutely flat as a pancake the next morning. I'm the nerd of the group and was already on my way to join them when I got the call - (I was a bit worried as I had to jump-start both of them, as they also had no jumper cables to jump one to the other). I am pretty sure these cars are between 4-5 litre Diesels so below the specs but I know how these things can have exaggerated numbers. Being completely flat batteries I had to press the boost button, which gives stronger current for 30 seconds. I pushed the button and got the first one to crank - it sluggishly turned but didn't start, I then said wait 15 seconds (to give it a chance to juice the battery a bit), and it fired up quickly with no issue. Did the same 15 second wait on the second car, and it fired up first time. Couple of points: - some reviews say that it is only 500 amps after receiving it. The 3000 figure is "peak amps" which they apparently apply for a second or two to get the thing turning but then settle down to 500 amps for the remainder of crank. I have had several jump starters over the years and ALL appear to advertise the peak amps figure. Many aren't honest enough to give the lower "cranking amps" as this one does so everyone is none the wiser. So keep that in mind when looking at the specifications of jump starters. - after jump-starting these two vehicles, only 2 of the 4 LEDs on the unit remained lit, so I wonder if it would have had enough in it to do a 3rd car (I had started a 2.5 litre petrol about a month prior and all 4 were still lit so never thought to recharge it - this worried me also). Keep in mind that these 2 cars are 4-5 litre Diesels (at the very high end of 4WD Diesel towing vehicles in Australia), and also keep in mind that these batteries were absolutely dead flat. I suspect it would have far more jump starts in it if not having to use the "BOOST" button for 2 large Diesels and not having done another jump-start a month earlier, so I am impressed regardless.

I bought the AstroAI S8 Pro Booster Pack mainly for peace of mind, and it really came through when I needed it. I’ve used it twice so far once on a car with a completely dead battery, and it started instantly with no issues. That used about half the battery charge. The second time, I used it on a larger truck, and again, it started right up without a problem. That time, it used just over half the charge. For something this compact, I’m seriously impressed with how much power it delivers. The build feels solid, and the included bag and cables make it easy to store in the trunk without taking up much space. It’s definitely a great tool to have around not just for yourself, but to help others out too. Highly recommend it for anyone who wants a reliable jump starter they can count on when it really matters.

So far so good, worked flawlessly on a 5.3 Chevy Silverado, completely dead battery not even a clicking sound from it, put this jump starter on clicked on the boost butten and bam started first try, really advise on getting this one worked very well, It does use 25% of the battery every time and was able to jump it twice before it needs a charge as it must be at least 75% to jump the battery.