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

VERY GOOD PRODUCT AND THIS JUMPER VERY POWERFULL THIS JUMPER VERY EASILY START 4.5 LITER ENGINE

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.

Perfect

Superb

Useful

Good

This battery jumper doesn't have any unneeded frills. It jumps your battery if it's dead and it comes in a small and light package that's easy to store in your vehicle or transport to another one. There are a couple of useful features that separate this from other jumpers. First, they call the cables that attach to the battery terminals "smart battery clamps." They are called smart for a couple reasons. First, it warns you if you hookup them up to the wrong terminals and have the polarity reversed. (In other words, you connected the positive clamp from the jumper to the negative battery terminal and the negative clamp from the jumper to the positive battery terminal.) If that's the case, a red light will illuminate showing that the clamps are attached to the wrong terminals. Second, if the light is solid green when the clamps are attached to the battery, you're good to start your vehicle. If the light flashes green, you need to press the "BOOST" button and wait until the light turns solid green, then try to start the car. This is necessary when the battery voltage is below 9V. If no light illuminates, it signals that you either didn't attach it securely enough to the battery terminals for a good connection, or possibly the battery could be damaged. Initially I didn't see the BOOST button function in the instructions, but I emailed the manufacturer and they promptly responded how the button functions and where to find it in the manual. This comes with a charging cable (USB-A to USB-C) but no charging block. I checked how many watts it pulls from the block, and it only needs about 15 watts to charge at full speed. Nearly all modern charging blocks can handle that amount. It has a flashlight that can be activated by a long press on the power button. It has a solid light initially, then another press activates a strobe light, another press initiates an SOS lighting pattern, and pressing it again shuts off the light. Last thing to note is that you can also use it to charge other USB devices, such as your phone or tablet or portable tire inflator. In my case, I don't think that I'll use it, even though it's nice to have in an emergency. This should have enough power for any typical car or SUV. If you have a very heavy duty commercial vehicle, it might be worth searching out a more powerful jumper.

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

This is a Fantastic Jump Starter. Large and charges the phones very quickly. I have not used the unit to Jump my car yet,though I'm sure it would have no problem doing so. I'm not sure if it would jump my truck, but I'm sure it would jump my car with no problem.. The unit is heavy and well built. It has 2 USB PORTS for churching whatever u need and 1 USB-C for charging the unit. I like the Flashligjt on the unit. It has several modes on it, which makes it great for any situation. Overall, I'm very happy with this unit

So far this works great! It’s started our Corolla twice after this latest winter storm. Instructions are easy to follow and super easy to use. It comes half charged; per instructions charge it to 100% before using. Very sturdy and has all the features we’d want for a compact jump starter. Our car had been sitting in the driveway with outside during the winter storm. First use it took a few times to get the car going but it worked. Drove it 20 minutes to church where it sat for a few more hours. Car wouldn’t start again but this junk starter did the trick. Next day the car started pretty close to normal. All in all I’d say this gets the job done.

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.