I work at an auction lot for a major car retailer. I decided to put this through the ringer today as I currently lug around a stand with 2 car batteries on wheels to jump start vehicles. It has never let me down but it’s heavy. While this unit is large for what it is, it’s still much lighter and can easily be carried one handed. The good news: I started 3 regular single battery cars and suvs and the battery did not drop below 98% charge. Fantastic. I’m thinking I can use it all day for this purpose. The bad: 6.7L Cummins diesel ram 3500. I bought this specific jump box because it said it would start up to 12L diesels. I doubted I would ever get anything that large so I opted for a bit of overkill. This jump box would not even allow the motor to turn over once before it went into protect mode. It killed 20% battery for 4 clicks (that’s the motor attempting to turn over 4 times) showed error code 6 and it was useless for what the manual says 10 minutes, but I put it away and got the old trusty jump cart out. Conclusion: if you need to start cars or suvs this is great. It’s not exactly small enough that you would want to keep it in your vehicle though. It should last quite a few jumps before needing to be recharged. I can not recommend this if you have a large truck as it would not start a common Cummins diesel. I’m bummed that it didn’t work out but I’ll keep trying different ones until I find one that works.

Great product. Started a car that hadn’t been use for several months.

Horrible quality. Worked decent for the first 6 month, after that it stopped holding it’s charge. If you need to use you have to charge it and use it immediately, which defeats the purpose. Last night when I tried to use it, it caught on fire!

Works amazing, would buy again, highly recommended

Justamente lo que esperaba, excepcional

Purchased jump box a few months ago, this is the first time I went to use it after it being fully charged and it will not jump off a vehicle. I try to get it to jump something off and goes blank. I try to use the 12 V system for a phone charger. It goes blank. Hopefully we can resolve this. If not, I would definitely not purchase this item completely disappointed.

This one got great reviews on project farm YouTube video and I bought it on sale because I needed extra power for my large Isuzu NPR diesel engine. And boy oh boy does this pack a way better punch than my gooloo. Probably three times the energy. So easy to use what a lifesaver. I hope it lasts the rest of my entire life.

I recently purchased this car battery jumper on Amazon, and overall, I’m extremely satisfied with the product and the company behind it. The jumper itself works great—it’s compact, easy to use, and has saved me multiple times when my car battery died. It’s a lifesaver, especially during those cold mornings when my car refused to start. However, about a year after I ordered it, I ran into an issue where the device wouldn’t turn on. I was a bit disappointed, but I decided to reach out to their customer service to see if they could help. To my surprise, their customer support team was amazing! They were quick to respond, walked me through some troubleshooting steps, and after confirming it was a device issue, they sent me a brand-new unit without any hassle. What really impressed me was how fast I received the replacement—it arrived in under a week! This level of customer service is rare and truly sets the company apart. It’s clear they stand behind their product and care about their customers. In summary, this car battery jumper is a fantastic product, and the company’s commitment to customer satisfaction is outstanding. I highly recommend it to anyone in need of a reliable portable jumper. Five stars all around! ⭐⭐⭐⭐⭐

Tried to use on a 2020 Mustang Bullitt with a 5 year old Motorcraft battery. Didn’t work. Drained after first crank. Was able to jump start using my SUV with no problem. These things don’t pack sufficient power. Don’t recommend at all.

There’s no way it will jump any diesel. I tried jumping my Harley there wasn’t enough to get it to turn over enough. Almost immediately dropped down to 70%. Ok maby it didn’t have enough juice. So I charged it and tried again. Still nothing. Finally I jumped it with the truck. I’d be a shame to really rely on this and this happen.