Scatach 002 4000A Car Battery Jump Starter,12V Jump Starter Battery Pack (up to 10.0L Gasoline and 8.0L Diesel Engine), Portable Jump Box with LED Display, 3 Modes Flashlight and Jumper Cable

I was SHOCKED that this thing actually worked! A few days ago, a technician told me my battery was near the end of its life as I was getting my oil changed. But I figured I'd still have time to shop around for a decently priced replacement. Well, me being stupid, I forgot all about the battery not being good and while I was cleaning out my car's interior one night, I turned the key slightly so the music would play and I'd have some light. Long story short, within 15 minutes, the battery COMPLETELY died. It wouldn't even make that cranking sound when you turn the key! Just nothing... Thank God I was in my own parking lot because I don't have jumper cables with me foolishly. Even if I did, I don't know too many people in my area that I felt comfortable asking for help from some I'm fairly new to this city.After doing some research, I was a bit skeptical about this thing, but I figured, I wanted to wait till my next paycheck before dishing out $200 on a brand new battery if I can. And this was cheap enough, as well as I figured I could just return it if it didn't work. Plus, it can double as a phone charging power bank, which I need cuz my phone is constantly dying lol. So I figured I'd give this one a chance.After charging it up to 100% once it arrived the next day (which I can't remember what the charge was exactly, but it was already over 90% for sure), I went out to give it a go, not expecting much. And to be fair, it wasn't JUST because I had never seen these devices and it sounded too good to be true, but also I knew my battery was basically just fried and at the end of its life cycle anyway, so I didn't even know if it was POSSIBLE to save in the first place. Anyway, I hooked it up as per the instructions, turned the key, and BAM! The engine started up immediately!! I unhooked the battery thing and saw that it still had 99% battery left in it somehow too! I couldn't believe it!I'll definitely be keeping this with me in the car forever from now on until the day I die (or can't drive anymore for whatever reason lol). And I personally feel good recommending this device to literally everyone. It's cheap and it could save you tons of money or at least a headache. Worth it to me!

Price was too good to pass up. I fully expected to be disappointed for the price tag, but it’s already gotten me out of trouble. Hooked it up to my 20 year old V8 with a dead battery, and in less than 30 seconds it started right up. Battery is pretty bright, but comparable to a cell phone light, and it feels very light and flimsy, but it does what i need it to do. Hope it lasts.

Awesome charger for my husband and I motorcylcles.Also,he used it on the zero turn lawn mower and his Savanna van.Great charger and I love it's compact and the we can take it alingb when riding on our motorcycles.

Inexpensive and simple, it works well. Price I paid: $29.99. Pros: Inexpensive, small, comes with a rugged case for storage, does exactly what it says it does and it does it fine. Cons: Not a lot of battery power, (8MaH, which is pretty small by 2025 standards, and I don't know how much of that 8MaH is accessible for use (most don't let you use the full battery before quitting), battery has a slow but real drain over time while in storage so you will need to charge it every 30-90 days, don't just leave for a year. I charged this overnight to 100% after using it, minutes later I turn it on and it drops from 100% to 99%, then 98%, then 97% over the course of about 90 seconds. So, not so great. My experiences using it have been to jump a 2004 2.4L Honda (not a huge motor) that the battery had sat too long and needed replacing. It did jump it, but it went from 100% to 54% in about 20 seconds of being plugged in. I drove to the store to buy the replacement battery, thought I'd see it the car battery was holding a charge or not (nope), jumped it again, down to 20% and really weak. I also had a big jump pack in the car so I was OK either way. I also loaned the jump pack to a gal pal when her car needed it, the reverse polarity safety does work (how do I say "red to red and black to black" any more clearly?!), and it was fine in the end. I more wanted to see if she could follow directions, I guess not.

Great experience. Our car battery died (11PM) , I got on amazon and ordered this (12AM) and by 3 pm the next day, we were hooking it up to the car and it worked. Can’t speak on lifespan, but we plan to keep it in the car. Charge it before driving long distances to places without outlets.

The battery booster works great though at first it would jump a cars battery but I have used it twice an it has paid for it's self good quality an comes in a case witch l though that's great to store it

Performs well above expectations!! Compact and versatile, feels like cheap plastic due to its lightweight but survived its first drop (although from only 3 feet) with no damage inside or out. Would recommend as a great alternative to the more expensive brands!

Never stops showing 100%, even after I used it 6 or 7 times to jump my car, so I think the % indicator is faulty. But works very well, extremely handy and worth every penny I paid. I just have to keep up with recharging it every so many times I use it, since the % indicator seems to be broken.