4000A Portable Car Jump Starter with Air Compressor, 150PSI Car Battery Jump Starter Battery Pack (12.0L Gas/12.0L Diesel), 12V Car Battery Jump Starter with Smart Jumper Cables, Lights, LCD Display

Had to use a few times to jump my truck, ATV and snowmobile and it worked great! Super happy it was on hand or I would have been stranded in the woods on one occasion.

Within a couple of days of receiving this, someone at my bar had a dead battery. It was a large pickup truck. Started it within 2 seconds. Much more convenient than pulling a vehicle around to hook up jumper cables. Will buy more. Cannot beat the deal at less then $30. Update: Needed to use it 5 times so far. Starts everything within a couple seconds. Today I had to use it on a large diesel truck. The owner said it will never start it. Couple seconds and it fired right up. Few days ago, the battery on my large 6-cylinder diesel generator was dead. Again, fired up in second. 5 starts with it and still shows full charge on the indicator. I've already purchased another one for my dad. He has a farm, and something always has a dead battery lol

Excellent and reasonable

Havent tried it as yet but so far i like what i see. It came charged. It feels sturdy and easy to use.

have used it a couple times and so far so good. havent done a massive v8 or anything just v6 and 4cyl engines. but jumped a basically fully dead battery with ease. i also take this with me camping and 4wheeling incase a phone needs power or another person needs a jump

Bought this for our grandson for Xmas a year ago. Nice thank you's right after, but he was more taken with gift cards and such. About a month ago, a huge thank you note as his battery died and he was able to use this to get going. A little bit of security for Gma and Gpa as we know that hopefully we've helped solve one mechanical crisis.

I already used it about 10 times! I live near Milwaukee so January and February can be brutal on car batteries (especially Walmart batteries)! I have multiple vehicles so sometimes my cars sit for over 5 days. Ok I was skeptical on buying this because the price was less than half of the popular ones. But I read a few reviews and took a chance. When battery was dead I hooked it up and instant ⚡️POWER ⚡️! Even when my dad's Lexus wouldn't start with traditional jump box, this thing did the job. (His car has electrical issues.) It's easy to charge, just use basic USB-C cable. I recommend using ur own USB cable because the included one is not Great. Even after several jumps the charge is almost full. I used to charge it after each use. Now I'm waiting to see how long it takes to drain the charge. You don't need the expensive units. This will do everything u need it to do. The carry case is great.

Seems to work good, haven't really had to use it though. I did try it on my truck but didn't work because the battery was too dead. This jumper won't jump a completely dead battery which I don't think any of them will now days for safety.