YESPER 12V/24V Car Jump Starter, 6000A Peak 4.1 lbs Portable Jump Starter Battery Pack 42000mAh Battery Booster Pack (Up to All Gas/Diesel Engine) Jumper Box with LED Screen and Wall Charger

I work as a Diesel technician, jumper works exceptionally well even for Semi-trucks as long as it is capable of turning over(cranking) once. Would buy another one as soon as the one I have fails. Btw had this one over 8months now and use it on a semi daily basis. Tho my coworker had one that only lasted a month. So quality may vary.

Used it twice so far to start my semi truck and it started right up each time. I’m very impressed. It’s super light and very small almost feels like a kids toy. Update, it’s only good for about 3 jumps before it throws an error code and needs to be charged

I was very skeptical in buying this but it was a backup for an issue on a bus. This little jewel is unreal. Not only did it work it’s been amazing. One day alone I jumped off 2 12v buses and even a 24v motorcoach. I’m really shocked, it’s small and really works. Even holds a charge for extended weeks.

Surprisingly, it managed to start my semi truck on its first try. It achieved the 12-24 volt distinction itself. It gained my trust with its light weight and fast charging. I think anyone on the road can use it easily.

It is light weight and is able to jump several vehicles before needing a charge.

Stopped working after 3 weeks! Seller only offers 1/2 discount on unit.

This is probably the most used tool I have on the farm. I have used it to start our snow plow tractor, bulldozer, lawn mowers, and other farm tractors more times that I want to admit. It has not let me down, it will get the big diesel engines spinning fast enough to start whether they are 12v or 24v systems. I do wish the cables where longer though, it can make for challenge on the location of some of the batteries, may have dropped it a time or two because of that. At least it didn't break from the fall!