NOCO Boost X GBX45: 1250A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.5L Gas and 4.0L Diesel Engines

Just go ahead and buy it, it’ll save you one day trust me. Let me tell a little true story basically I’m a bass head and I wanted a sub in my jeep so I took the kicker sub and amp I had in my truck and put it in my Cherokee unfortunately we did not reconnect the cable that travels from the alternator to the battery bus bar however the cable was on the post, the first sign of the problem occurred when the stop/start system was disabled shortly after driving away. I thought this was because the car detected the subwoofer was now drawing power so it disables the system so I ignored it. We did all this on Saturday evening and everything was going smooth, Until “Wednesday” came around. So I’m driving to work on the interstate in the first three warnings that came appeared were ABS, Stability Control, and my parking brake were all disabled. Forgot to mention my card did start mentioning something about a low power state but I didn’t know what that was about but now I know; Anyways I stop at a red light, and things start to get real problematic first my AC starts turning on and off and then my head unit blacked out. I put the card in park because I didn’t know what was going on. I opened the back of my jeep manually as the Rear powered door is also disabled. I glance over at my Subwoofer Amp (Kicker 800.1) and I see two lights on at the same time power and protect meaning the voltage in my car battery was below 10 1/2 V and I verified that with my multimeter as I work with AC units so I jumped my car battery off with a little bit of voltage from the pack and I was able to quickly get to work in the afternoon. It turns out I did not reattach the nut nuts for the battery lead meaning the car battery was never truly charging. If you’re thinking about buying a cheaper, one of these, you might want to stick with this brand as they are very reputable charge very quickly through USB-C power delivery, which is very handy. It is in my opinion the safest jump pack as you cannot short the output unless you override the pack, which I have done before sorry about that Noco, but I had to experiment. Sheep was work, but they’re usually made with cheaper batteries so they don’t hold a charge very well and they die pretty quickly so it might be only good for six or seven cranks. This jump pack also has many safety features and temperature protection. And it has a flashlight. I don’t know what else to say but I strongly recommend buying this jump pack. It’ll save you when you’re in a jam and it saved me from being stuck at a green light.

Good product. I have an older Ford Econoline V8 Van from 1999. It's not driven often event though the battery was replaced a couple of years ago. Went out to start it after about 2 months of non-use and the buzzer didn't even sound when sticking the key into the ignition. I tried hooking up a trickle charger for a couple of hours and while that did provide some power, it wasn't enough to turn the engine over. I ordered this, arrived same day, charged it up which took about 1.5 hours with a high-power Apple USBC charger. Placed on the dead battery, waited about 30 seconds and the van started right up. I noticed the charge on the battery of the charger reduced by about 50% so if you have a large engine or diesel, you may need the higher power unit. It met my needs, and I will carry it with me in the van. I wish the leads were a little longer, but they are long enough to reach the positive and negative terminals of the battery. I think it is reasonably priced if you have a regular 4,6,8cyl vehicle.

Don't do many reviews, but people need to know about this thing! If you have a basic 4, 6, or 8 cylinder vehicle (meaning not some big diesel truck) and you are wanting something to jump start your dead battery... GET THIS THING! It is awesome!! It turns over the engine in my Surburban faster than normal!Only minor complaint is that the leads are shorter than I would like. They are long enough to connect to the battery, but a little short to connect to the battery (+) terminal and an engine (-) ground, which is the prefered way.

Even for myself, who's so deficient in car knowledge that I had to Google "how to connect jumper cables", this unit is safe, durable, and so easy to use. The directions that come with it answered a few questions I had, and I managed to figure out how to successfully jump my car's very dead battery. The reverse polarity indicator helped when I was having trouble at first, so I trust the unit's safety features. It took a little while for it to charge all the way to full, but somehow even after using it a few times it's still in the green when I went to charge it again. Super useful and fantastic.

So far I’ve used it once on a 66 Mustang 6Cyl. When I turned the key on I thought the battery was going to explode bc so much power was coming through. We were amazed at the power in such a small package.

I was happy to receive this unit which replaced a 'factory reconditioned' unit I bought from Amazon at a discount that didn't work at all. NOCO is a great brand and I expect this will work fine. However, I do have two comments: 1) lack of a manual. There is a thick "Safety and Warranty Information" booklet in about 80 languages which I assume is required by some national laws. But let's face it: working with a car battery can be dangerous. Instructions are important even if it adds to mfg. cost. I did find their well-written manual online and printed out the relevant pages (4 pp.). A final gripe: the bag for the charger needs a string tie that for sure keeps the charger inside the bag. There is a string but in order to make sure things stay put you have to tie the string yourself or add a bungee thingee, which I did.

Have had this for 3 yeats now. Have used this with each of the kids cars, and my own truck. May not be an everyday item, but its a must have in the garage.

This is one of my favorite products I've ever purchased on Amazon. A balky electrical system in my new (used) car meant I needed something like this. It's perfect. Great size, easy to use, nice packaging. And it's worth paying a slight premium for a branded product rather than all the cheap trash that's out there. I wish it would charge a bit faster but that's my only complaint. I have another car now but I still use it all the time for my lawnmower – great product!