
Most importantly, it works flawlessly for several jump starts without being recharged in between. It's light, it's well-designed, it's reasonably priced, and compact to boot.
Will start practically any vehicle & even make a big 4.0 Northstar engine roar to life with little effort. You will be totally impressed every time you use the JNC300XL.
Collector car enthusiasts can easily start their project cars & vehicles which have been in storage for months without the need to push a car with a dead battery so that jumper cables will reach it. Great peace of mind and self reliance especially for a single person who might have a difficult time reaching a friend for help.
- Product Features
- 900 Peak Amps
- 225 Cranking Amps
- 27 Inches of #4 Gauge Jumper Cables
- Grip-Lock Clamp Storage
- Full Size Clamps to Penetrate Battery Corrosion
- Comes with a High Intensity Work Light
- LED Battery Status Indicator
- DC Outlet to Power 12 Volt Accessories
- Includes Wall Charger & Male-Male 12V Extension Cord
A great combination of power and portability, the JNC300XL packs the punch of 900 Peak Amps of starting power into a unit that weighs just 9 lbs. to start virtually any passenger vehicle. This store-anywhere, use-anywhere unit features Clore PROFORMER battery technology, specifically designed for vehicle jump starting. It also features a high intensity work light to aid in night time and other emergency situations. Direct to product discount on Amazon here.
Owner comment: This is one of the best in its class. I suggest Amazon drop competing models. A very reliable ultraportable starter using an external pre-charged battery which is needed when you're stuck out on the road or in an emergency! Starinski, S. [paraphrased - Read full comment here.]

Owners have reported using the Clore Automotive
JNC4000 starter over a period of several years and
loved it! Mechanics have chosen to keep this piece
of equipment for their own personal use when they
retire; which is an awesome endorsement from
those who know quality tools.
This will start anything from a small Honda Civic to
large engine V8 vehicles… even starting a big rig
over-the-road tractor trailer [18 wheeler] has been reported. Don't get caught
on a back road in the middle of nowhere or spend hours waiting for your
local garage or AAA to rescue you. Not only will you avoid being outside with
the family during foul weather but the JNC4000 will just about pay for itself
with the first use.
- Product Features
- 1100 Peak Amps
- Battery Status Indicator Gauge
- 23 Inch Heavy Duty #4 Cables
- DC Outlet to Power 12 Volt Accessories
Save your time & avoid giving away your hard earned dollars to somebody who will do exactly the same thing as you can do for yourself with this product!
A perfect entry-level professional unit, the JNC4000 combines power and ease-of-use in a durable, reliable unit. It features Clore PROFORMER battery technology, specifically designed for vehilce jump starting. With a built-in charger, convenient battery status gauge, impact resistant case and 1100 Peak Amps of starting power, it meets a wide variety of shop needs.
Owner comment:
For Christmas I wanted to buy my parents who live in the Rocky Mountains a starter. They drive an SUV and would need something with a lot of amps; so online we found the Jumpstart 4000. Dad was so excited to get it, he opened it before Christmas and had it out during our visit starting quads that had been sitting out in the snow and not running for quite some time.
Then wouldn't you know it our Ford F-250 truck would not start one morning, after a -9 degree F night, when we were taking our one year old to the urgent care with a 103.7 fever. We grabbed the Jumpstart and the the truck was up and running in minutes. By the time we were headed home from our Rocky Mt.Colorado trip the Jumpstart had been used nearly everyday, even to jump the neighbors snow plow. We were all very impressed with Jumpstart 4000 and knew we made a good purchase.

Well worth the cost & works first time, every time.
The cheap units at local stores seem to be disposable models in comparison.
Start a multitude of vehicles… everything from a Cat D9(a big bulldozer) to a bass boat. One great feature is it holds its charge for months. A very nice piece of equipment all should have in their trunk & a bargain when compared to a tow truck bill.
Self contained with all the attachments needed. Name brand product with a
national support hotline should you have a question or need help.
Would make a great gift for a family member to keep in their car. According to all accounts is "Single mom certified!"
- Product Features
- 900 Peak Amps
- 300 Cranking Amps
- 21" #4 Gauge Cables
- Industrial Grade Jaw Clamps
- Automatic Recharging
Easy to use and lightweight, it is the ideal entry level professional jump starter. Its compact size, rugged case and jump ability make the ES2500 a perfect companion for any situation in which you need portable power.
This will start cars which have been buried in snow for two weeks!
Anybody in the United States who lives in a place where there are
cold winter temperatures to contend with should have one of these in
Owner comment:
The car starts up fast and easy, including yesterday, three months after the last charge. It still indicates it has a full charge! Could not be easier! After using it yesterday, I knew I had to tell people about this little guy. Do you want a guarantee that a dead battery will never leave you stuck somewhere? Then get this Booster Pac! Easy to charge, easy to store, easy to use, and it's powerful and reliable! It's everything I hoped it would be. - Thompson, S.
If you can't get your car or truck going with this, you have bigger problems than a dead battery! This professional grade starter is twice as powerful as many other lesser units & one of the most useful travel safety tools ever! It is compact, efficient, very easy to use, and works like a charm.
Will start a big V8 with a totally dead battery on first crank! AAA will actually bring this out if you call them for a car that doesnt start. These are awesome!
Don't take a chance with getting stuck in a remote location with freezing winter or sizzlin hot summer weather. The time & money you will save by having this on hand when you really need it is worth the investment. Not only will it perform like a champ first time, every time but it won't take up all your trunk space.
PRODUCT FEATURES
- 1700 Peak Amps
- 425 Cranking Amps
- Clore PROFORMER Battery Technology
- 46" #4 AWG Cable Leads
- Industrial Grade Clamps
- Built-in Charger
- Automatic Charging
- Voltmeter Charge Status of Onboard Battery
- 12VDC Outlet to Power Accessories
- Battery Status Indicator Gauge
You might be surprised at how much power it outputs. Many
larger engine or luxury cars have a high torque starter on the
motor & require a bit more to get them going. If you examine
the battery in a BMW you will first notice that it is longer and
heavier than a regular car battery but this will kick off a
5 or 7 series BMW with power to spare.
If you enjoy listening to music inside your car when you take
a lunch break or are a heavy user of other accessories then
having this on hand is not a bad idea.
A great bonus is that it comes with a redeemable certificate
for a one-time replacement unit. If (for ANY reason) this unit
stops working during its lifetime, you send it back to the
company and they will repair or replace it, no questions asked
for $50. Not a bad deal! Just look for your certificate enclosed
Owner comment:
I use the 660 for my V8 Ford Crown Victoria and it makes the car
come back to life. Before connecting it to the battery, no lights would
come on; no dome light; no clicking sound from the starter.
When I connected to the battery the dome light came on and the
engine started right up on the first try and in only 2 secords. I would
say they work great and save you time and money. – Martin, M.