Very powerful, easy to use

Much better than jump-starting with another vehicle.

It works beautifully! As expected of a good quality product. It is worth every dollar I spent on it

Perfect for emergencies or xtra charge when out in country. Worked great and good price!

Now this powerpack packs some punch. Even starts my John Deere Diesel with a dead baattery.

Works great

Works awesome, charges quickly, light is very bright great for changing tire at night. All around 5/5 with ease.

good

Very useful

Works fast, great product!

Easily started a completely dead Accord with a six cylinder engine. Was in warm weather but I thnk it would have worked just fine in cold weather as well. It is large and heavy and I cannot say how long it would hold a charge, but the reality is that the small ones simply will not work when you need them, especially up north in cold weather with even a moderately large engine.

I bought a smaller version of this for myself a couple of years back and bought another for someone in a cold northern state, and it turns out this newer version also has a light on it that flashes or stays steady. What a great idea! Now if you're out in the dark when your battery needs a jump you've got an easy way of seeing where things need to go, or even just to alert other drivers of your location. His even arrived fully charged (make sure you charge yours after usage, just to be safe! Charges in your home or car.)<br /><br />He hasn't had to use his before but I've used mine a couple of times, for myself and a friend, and I've gotta tell you: It's a lifesaver. This is WAY better than getting a jump from someone else because 1) You don't need anyone nearby to get the jump from and 2) There's no need to wait with the engine going for your car to get juiced enough; as soon as you're hooked up and turn your ignition, the thing starts right up!

My third purchase-3 vehicles. I had one of those club-warehouse clubs cheap version, however it failed at first use. Bought one of these puppies and the thing is impressive, works-and has a user replaceable battery! Rock on with this great product.

good

Had a JNC660 for YEARS!<br />Then, 'B&D' . . .<br />Bankruptcy & Divorce. I actually forgot to get it on my way 'out'.<br /><br />THIS unit, every bit the equal of the 660, PLUS!<br />If needed, I have a means to keep my cell phone powered-up; or, any USB device.<br />This, as well as not just a very powerful 12 volt jump starter, but, a 12 volt 'source' for<br />any 12 volt 'need'.<br /><br />The cables on the 660 were only about 4ft. long . . .<br />On the JNC770R, they are almost 6ft. long, (still #2 AWG 'welding cable'),<br />which can come in handy in some instances.<br />And, the clamps on the 770R seem to be a 'step-up', also.<br />The state-of-charge gauge on the 660 is replaced with a digital read-out. Nice!<br /><br />The built-in work-light is quite powerful . . . be careful.<br />And, the MASTER 'On / Off' switch for power to the cables is a great 'safety'.<br /><br />YES, for a few $$$ more, I feel I got a few $$$ in added value.<br />And, Clore® has developed its battery for the specific purpose<br />of actually jump-starting a 'dead' vehicle. (Repeatedly, if necessary!)<br />Other brands???<br />And Clore® has been around for more than simply a few years.<br />THIS, and associated 'toys', is all they do.<br /><br />NOW, I just hope 'WE' in the northern Ohio region have a winter<br />of 60ºF or better, all winter long!! But, reality will bite me . . .<br />THAT is when I'll report back on the actual, IN NEED performance<br />of the JNC770R. I truly foresee no 'problem'.<br /><br />And the 'bonus' . . .<br />Not having to beg anyone to help me get going, with their vehicles' battery!

Works really good. Jump started couple of cars and never had problems with it. Easy to use, absolutely love it. Purchased it for my dad's birthday and he really loves it too. Tried jumping a semi with it, and guess what? It had struggles but it did actually work. Great product. Buy with confidence.

Love this jump box! worked perfectly to jump my SUV.

This item has worked flawlessly for me. Once purchased, I fully charged the unit and put it in my trunk.<br />I had some electrical issues with my car recently that required me to jump start the vehicle after I turned it off.<br />This jump pack reliably read the battery voltage and started the car every time.<br />I have made multiple jump starts so far without recharging between jumps and have never had a problem.<br />The long cables are great and allowed me to set the unit on the ground when jump starting the car.<br />Fully satisfied with the performance of this item thus far and would recommend.

Nice wait it's very nice just what the shops use little heavy

Great jump box, l would it buy again, love the on and off switch and extra long cables!