ET03 Car Jump Starter 4000A Jump Starter Battery Pack for Up to 8.0L Gas and 7.0L Diesel Engines, 74Wh Portable 12V Jump Box with USB Ports, LCD Display, Storage Case, and LED Light

Great starter!! Light weight, plugged it in first time and it did the trick!!! Only took a small portion of the battery life too. Very safe and does the job well, and fast!! This baby saved the day, and was so easy to use. A+++

GREAT price and GREAT device!!!!! already saved us just a few days after purchase. 84 year old mother doesnt remember she left the lights on while sitting in car for an hour. then this thing starts it right up! so easy to use... incredible! thank you :-)

Smaller than I expected but works well. Started a Subaru Outback with a completely dead battery. But its internal battery power went from 100% to 40% During the starting process, so the advice in the user manual to make sure it is fully charged before trying to start a car with a dead battery is best heeded. I did note that when I went to recharge it after the dead battery start, it had rebounded to 85%. If you have USB charger that can provide 9 volts 2 amps, it recharges pretty quickly. If you only can provide 5V, it will take quite a while to recharge. Overall, I am quite pleased. It is compact and easy to use, and it works!

I drive a 5.7L V8 and this has been a godsend when she decides to act up. I love how quick and efficient it is! Once hooked up, my dead engine will turn over in a single pull — for just 6% of battery, too! It never leaves my car and has been through all temps in Ohio without issue. Holds charge well and lasted days when I could only start my van with this jump starter: Well worth the money!!

UPDATE: I'm going to compare this to a 2nd jump starter pack I purchased that was well known and was 40% more expensive. I was going to return the S ZEVZO since it failed to start my Ram 1500 with a 5.7L V8. After a 2nd attempt on another day, it started. It started right away but it dropped the battery to 63% and wouldn't start it again. I gave it 4 stars because it did start it, when another unit I used would not. Overall, this unit came with a much better, hard sided, zippered case and it started my truck. The more expensive unit had a cheap, nylon storage bag that allowed the flashlight to be accidentally turned on.

I fiddled with a couple of wrenches and decided there was just no way I was going to extract the dead battery out of my car. Crummy-looking jumper cables were $36. at Walmart; for just a few dollars more I had Amazon deliver this little marvel, and within minutes I was driving down to Advance Auto for a reliably overpriced new battery. Wow, this Jump Starter works great, and it's lightweight and comes in a nice case. Very nice addition to the "emergency" equipment for a vehicle.

So happy with this purchase that I came to purchase another one to keep in my daily vehicle!! Got tired of dragging out the jumper cables every time I needed to jump a vehicle or piece of equipment off. This box comes in a nice case, had a partial charge on it and used it on my diesel truck as soon as it arrived so i could move it to the shop to change my batteries. I charged it up and have used it a few times since then on tractors and other equipment that doesn't get ran daily. It is nice, great value, and convenient. As far as I can tell is going to jump several things before it needs another charge.

Works quickly and perfectly. Tried on o different cars and started both fast. Would absolutely purchase this battery pack again if I ever need to. Recommend it highly.