

⚡ Never get stranded again — jumpstart your peace of mind!
The JNC4000 is a professional-grade 12V jump starter delivering 1100 peak amps and 325 cranking amps, powered by Clore's PROFORMER AGM battery technology. Designed for reliability and ease of use, it features industrial-strength clamps and a built-in charger, making it an essential tool for quick, dependable vehicle starts in any condition.







| ASIN | B000JFJLOM |
| Amperage | 1100 Amps |
| Battery Type | Lead-Acid, AGM |
| Best Sellers Rank | #191,645 in Automotive ( See Top 100 in Automotive ) #511 in Jump Starters |
| Brand Name | Clore Automotive |
| Compatible with Vehicle Type | Passenger Car |
| Customer Reviews | 4.5 4.5 out of 5 stars (476) |
| Global Trade Identification Number | 00747410990568 |
| Included Components | (1) JNC4000 Jump Starter, (1) 12V male-male cable |
| Item Dimensions D x W x H | 14.5"D x 5.5"W x 16.6"H |
| Item Type Name | 1100 Peak Amp 12V Jump Starter |
| Item Weight | 18 Pounds |
| Manufacturer | Clore Automotive |
| Manufacturer Part Number | JNC4000 |
| Manufacturer Warranty Description | 1 Year Warranty |
| Peak Output Current | 1100 Amps |
| UPC | 747410990568 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
A**Z
Lifesaver for a dead battery
My car's battery wasn't holding a charge anymore and regular jumper cables weren't getting the job done so I decided to order this one knowing it would work. Where I work, we sometimes have vehicles sitting for a long time and they have to be moved. We have a contract with the local towing company and call them up when ever we need a jump start. They always use a box very similar to this one (there's is blue) and the vehicle starts up instantly! I connected mine up to my car, hit the start button and my car started right up, no hesitation! I totally recommend this, very easy to use, even for us ladies! This box is a great long term investment, never know when you or someone you know may need it.
T**T
It's just the "Best" ..cold weather worries set aside..finally!!
I tried a number of portable jump starters and found them irritatingly finicky about having enough juice to start my car in winter, and definitely had to re-charge them after every jump. Then I was lucky (?!) enough to need a jump from the local garage since the one I had (yet again) wasn't up to duty. It was quick & easy to use & my car started in a jiffy - so I thought I better buy one of these. If it hadn't worked, I think I would have given up on portable jumpers. Well I am writing a review because it not only worked perfectly, but was able to jump the car 4 times without even remotely needing to be recharged. I would guess you can get about 6 jumps out of it. And its just red to red, black to metal, and it's ready.. You dont need to 'turn it on' or remember any operational details. It's true the cables are short, and could stand to be a little longer, but I have just rested it near the battery and never had a problem with it tipping, and have always done the jump by myself with no assistance. I leave it in the car behind the drivers seat, and feel 100% safe that I'll be okay in winter, despite a car that has poor starting history (not the battery..it's the car) in very cold temperatures. A life saver, highly highly recommended for: RELIABILITY, EASE OF USE, LENGTH OF BATTERY LIFE WITHOUT CONSTANT RECHARGING, PEACE OF MIND.
K**S
Great Investment
Worked perfectly. We used it to jump our organization's little shuttle busses that had been sitting for a while.
C**O
No excuses pro-grade jump starting
I have an industrial grade set of jumper cables, but the car parking at my house means I have to join them together to get the length and then rig up some romex house wire to conned the frames...it works but is a the pain you imagine. I bought a cheap unit a couple of years ago, but it simply did not work and was one of my very rare returns to Amazon. Before buying this I asked the company which model to buy as I have a V-8 truck and a BMW with the battery buried in the trunk and jump starting terminals in the engine compartment. They suggested the 4000. This is a big and heavy and clearly rugged device and started the Bimmer quickly as one of my kids managed to kill the battery the day after I bought this. What I can't know is if the smaller and cheaper version would have worked just as well. Oh, well, no excuses now! The cables are indeed short and for some cars where the battery is really far away would probably be a problem. For most cars and trucks this would be fine. It really is powerful and would likely work even on large trucks.
M**S
CLORE JNC 4000 IS AN EXCELLENT PRODUCT
The Clore Automotive JNC4000 is the product to take seriously. After looking around a long time, I decided that this particular model was the best. I am very pleased with my decision. I first chose a jump starter from my local store. It was a Super Start Power Pack Portable 12 volt power source with 1000 peak amps. When I got it out of the box, I noticed that the lights on the actual charging unit were wrong. The printed label on the unit had been reversed leaving me very confused to whether it was charged or charging. Instead of reading "Charging" it said "Charged!" I called the company to complain and they said that they would call me back. They didn't bother. The quality control was in question and the company didn't care!? Back to the Clore. It is sturdy, built well and the instructions have obviously been written in this country and easy to read. There are no corny lights in red or green. It has an easy to read needle that clearly indicates where the charge is or how much more is needed to bring it up to its peak power. Nice. The smaller cables are of no concern for the average home owner. They are conveniently located and easy to unwind. This particular sealed battery can be stored or travel in any direction. On its side, back or whatever. Many units say that they should be stored upright or packed that way for travel. Not this one! So, the big complaint seems to be that there isn't a power cable that comes with it. I personally feel that this is not a problem. I will pack a small power cable about ten feet long without that multiple cable that comes on the smaller ones sometimes used for lamps, etc. It takes one plug outlet on the box and one on the wall. I like that it is not attached to the box itself so I can store it easier while I'm on a trip. This unit I have been told is used mainly by auto dealerships to jump start dead batteries when they have been depleted sitting in the parking lots. By the way... the little card that comes with the unit has a lifetime guarantee, but it has gone from $25.00 to $50.00 and now is up to $75.00. So, when something goes wrong to the original owner - to send the product back and forth and to repair or replace it costs $75.00! Forever... if you live that long! I recommend this jump start to anyone who needs something that is dependable and long lasting. Good Luck... Mike
J**N
Nice jump box
Great item helped me alot
T**R
cannot start a dead battery
I am a physicist and do lots of battery work. Got this for my Lexus because I accidentally hit the headlights knob as I exit the car and have a dead battery the next morning. I just charged the JNC4000 to full level last week. This morning put it on the dead battery for 20 minutes. Hit the button and it shows only 25% charge with it connected to dead battery. Would not even give a "nudge" to the starter motor. Will recharge JNC4000 tonight when I get home and try to start again. Will also try to disconnect car battery and see if JNC4000 can turn over the starter without the load of the dead battery present. Needless to say I consider this a useless piece of equipment.
M**O
This model was used by the towing company that helped me a few months ago. They have this booster pack since 2020 and boosted hundreds of cars using it. The key to longevity is to charge it after use and keep it charged (plugging it once a month is enough). It recently boosted my Lexus E350 easily, while my ‘regular’ booster pack and my lithium one were unable to do it. And the internal battery is replaceable! Look on Youtube for instructions. 100% recommended, even at regular price.
J**Y
Really like this. Comes in handy.
T**N
Came on time works well can't ask for more
R**L
Fast delivery and as described
T**Y
Item as described. Had a good charge on it when I opened it. Easy extension cord plug in. Charged it fully overnight. Used it the next day to jump start my ATV. Worked very good. Pleased with this unit.
Trustpilot
3 weeks ago
2 weeks ago