Car Jump Starter with Air Compressor, 150PSI 7000A Peak 24000mah (Up to All Gas or 8.0L Diesel Engine, 50 Times) Portable Jump Starter 12V Auto Battery Jump Pack QC 3.0 with 160W DC Out

This is one powerful jump box! My BMW 900cca AGM battery was killed by a bad alternator. It was down to 4.2v and had completely lost all power while driving and had to be manually shifted into neutral even just to get it on the flatbed to tow it home. I didn't even read the instructions for this thing, just plugged in the power terminals, saw the battery was nearly fully charged, and went to see what could be done to the dead agm battery. Within seconds of connecting the positive to the jump post in the car and the negative to the ground post (which surprisingly sparked!), all the previously-totally dead interior lights powered on, the hazard lights resumed blinking as they'd been when last the car had even an iota of electricity coursing through its over-engineered system, wipers kicked back on, screen lit up and went through its check process while key light came on and the pleasant bing of a car waiting to drive happened. I was shocked. I inserted key to accessory mode, everything was good but a slight bit glitchy on the lights. I didn't figure it would start; what are the odds a BMW requiring 900cca just to exist without any bells or whistles could go from 4.2v to 11.8 or higher, enough voltage to actually turn the engine over. And yet....I gave it a shot. Immediately the car roared to life! Astonishing! It did die relatively soon afterward, as was expected. The jump box started beeping when the voltage readout got down below I think 13.1 and I let it scream for a good long minute while I checked the battery itself with my multimeter (now at a 5.6v!) before unhooking it and saw that the jumpbox was down to one battery bar. Still very impressive. I then tried to jump the BMW with my other car, an Audi with the exact same battery. Took 2 or 3 attempts and then a long hold on the start button before the engine cranked enough to turn over. The jumpbox was more powerful right off rip (without even being pre charged!) than my 900cca AGM fully-charged battery that was running in another car! So so so pleased!Edit: Apparently "normal" jumpboxes should not be used on AGM batteries, I read about AFTER using this jumpbox on my brand new AGM battery. When I went out to swap out the new battery from the dead BMW with the bad alternator, I noticed the battery sides were covered in a thin layer of coldish-feeling condensation. Unusual because nothing else in the car, much less the trunk or battery hole was even damp at all, it hasn't rained, and the temps haven't even gotten cold enough overnight for condensation to form on exterior glass, much less a plastic coated battery wall hidden in the depths of my dry, warm battery "bedroom" in the trunk. I also immediately noticed a strong and strange chemically smell I was unfamiliar with and couldn't put my finger on it until I realized that the jumpbox had caused the brand new AGM battery to leak, just like the internet warned me about after the fact. So maybe don't use this on AGM batteries, especially not at full power and just leave it sit there for 10 minutes. Schwoops.

Obsessed! Worked easily to get me out a flat tire issue and I've since ordered another for my second vehicle that I take off-road and one for my folks.

Comes in handy especially with the air pump on it

My first experience was great, this product did everything it said it should , worked for about 4 months, then the unit itself would only charge up to 2 bars, 4 is full. It still worked, but it was annoying. I tried to contact customer service, but being mfg. in China lent itself to some challenges. That all being said, they sent me another unit, no charge, works great, and I am fully satisfied, the only reason I would not give it a 5 way due to the original problem. It is a great unit, compact, well made, easy to use.

The media could not be loaded. I'm very impressed with this little air compressor. It came with all needed accessories in a nice case and fits in securely. The integrated air hose that is stored on the back is very handy. I didn't try jumping a battery, but I did make sure the voltage meter on the clamps works. I fully charged the battery then went to work getting equipment ready from winter storage. 1st, it made quick work of my riding mower tire from 10psi to 14psi. Then I took it to my utility trailer. It pumped all 4 tires from approx 46-48psi up to 65psi. On the last tire it was down to 1 bar but still finished. I let it rest after 2 tires. I noticed that the last tire took a about 1 minute longer the others because the battery was down to 2 bars and then 1. Still it finished. I'm keeping this tool in my truck. I checked the psi from the compressor against my tire pressure gauge and on the lawn mower tire it was about 1psi low, but on the utility trailer tires it seemed spot on.

I used the product many times over a year, and then it stopped holding a charge.I thought it worked great, so I was very disappointed, so I contacted customer service. They responded and told me that they would replace my unit even though it was well after the warranty period. The unit arrived as promised, and now I am very happy!Thank you very much!This company's customer service was excellent; therefore, I strongly recommend their products!