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Autowit Super Capacitor Jump Starter, 12V Batteryless Jump Starter, 8.0 Gas&4.0 Diesel Car Jump Starter, Portable Jump Starter for Car Battery, Bulit-in Supercapacitor, No Need Pre-Charge

  • Based on 2,674 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Nov 21
Order within 13 hours and 22 minutes
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Style: SuperCap 2


Features

  • NEVER REQUIRES REGULAR CHARGINGSuperCap 2 features built-in supercapacitors. NO NEED PRE-CHARGED at home. It just takes a few minutes to get started from your weak batteries when you use it.
  • HEAVY DUTY SUPERCAP JUMP STARTERUnique supercapacitor technology makes SuperCap 2 easier to use. And it has a longer lifespan than traditional battery car jump starters. Under normal use, it can be used more than 100,000 times.
  • ULTRASAFE PROTECTIONSuperCap2 is physically active to keep users away from the risk of sparks or explosions. No worries any more about reverse polarity charging, overcuurent, overload, overvoltage etc.
  • MERGENCY LIFE SAVERSuperCap 2 can work in extreme environments (-40C or 70C). It has four charging methods and only takes a few minutes to charge. Whether it's a blizzard or extremely hot weather, you can handle it with ease.
  • POWERFUL 12 VOLT CAR JUMP STARTERUp to a 800A peak current, SuperCap 2 can start the vast majority gasoline engines and diesel engines up to 4.0L in just a few minutes. This includes cars, tractors, motorcycles, RVs, pickups , weeders, snowmobiles and many more.
  • 100% SATISFACTION GUARANTEEYour satisfaction is important, so please contact us when you encounter any problems. We have free return/replacement policy to protect each buyers rights.

Brand: autowit


Product Dimensions: 4.52"D x 10.43"W x 1.77"H


Amperage: 800 Amps


Peak Output Current: 800 Amps


Brand: ‎autowit


Item Weight: ‎2 pounds


Product Dimensions: ‎11 x 5 x 2 inches


Country of Origin: ‎China


Manufacturer Part Number: ‎autowit


Amperage: ‎800 Amps


Date First Available: March 30, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Perfect. Have truck, will crank. Tanks! I mean, Thanks!
Style: SuperCap 2
Update #3: Have not needed to use it since last edit but it connects & loads up using any & all of the included connectors. I’ve even used my little 10w USB solar panel. (Took forever for reasons obvious). All worked & when I tested each, used the truck & it was ready to go. So no issues. Works as stated. Works well. The only variables are the vehicle & the user. Aside from a tiny solar who-cares-what-you-have-going-on-today panel, each method you use determines your charge time. It’s math. It works. Buy it. Just double check your connections like I didn’t. Wink-wink. Vanlifer tip for those with steeds & iffy electrical systems: Load it with your USB pack whenever you park. If you occasionally need a jump but think often enough you might need one every time, this practice will ensure less downtime when you have to go but ‘Damn! Three days since last jump. Trickled down to 20%, USB battery, yikes! I’ll be on the road in forty five minutes, not 2.5! Damn damn! :insert Doc Brown facial expression: So, shortly; Have a weak electrical system? Buy this & habitually connect it to your USB battery pack on parking. Less downtime. Update #2: I gave it a day. Out of frustrated fairness, I gave it another go. Connected to a charged battery this time. Used only the jumper connector to turn it on. Worked. Seems intermittent. Unsure of cause. Will continue use as needed & update review as my experience evolves. Update #1: It’s been a few short months & it no longer works. It will charge but not begin the countdown when the button is pressed. Damn waste of homeless guy funds! Original review below: The BEST thing about this is that it will crank a light truck. Others I looked at won’t work very well with even my little 4.6L motor. When I was experiencing an electrical issue, this helped me stay moving until I found the issue. It’s light, so easy to stow, carry, and retrieve out of your VEDC. Simple to use. Very few connections. It’s literally plug (or pinch) & play. & in the event you have a tragically low battery, you can even prime this thing with your cell phone charger or a portable USB battery. Takes longer but it works. One-person use with a ‘beep’ loud enough to hear inside your car if it’s freezing outside while you wait for it to charge. And it’s tough. With no battery in it, you don’t have to worry about handling it like you would a lithium ion or a lead acid battery jump starter. ... show more
Reviewed in the United States on April 22, 2021 by Saruvan the White…hightop

  • It works!
Style: SuperCap 2
So easy to use. Just attach the color coded clamps to the battery and it turns on and starts charging automatically. In about 2 minutes it reaches 100% and starts beeping. You push a button and it counts down for about 5 seconds then automatically puts out the current you need to fire her up! My battery couldn't handle the cold months anymore this last winter so I got a lot of use out of this gadget and it worked flawlessly every time! I love that I don't have to worry about a battery that has to be kept charged and would probably die permanently after about a year and I don't have to worry about keeping it in the car during extreme temperatures. Fantastic product! I wish this existed decades ago! ... show more
Reviewed in the United States on June 19, 2024 by Kamakiriad

  • Works but know this
Style: SuperCap 2
It works as advertised and started quite a few vehicles already. It has limitations as others have stated. If the battery is dead, dead it won't do you much good unless you find a way to make it see voltage. I built something something to bypass this but unless you are into electronics it may be out of your scope. Also, if you are working on old or hard to start equipment or vehicles this isn't for you. If you are looking for something easy for emergencies this is terrific. It is easy to use and doesn't require charging every few months. I have had it a few years now and it has started everything I have needed it to. Including my 6.0 diesel above it's rating. I would recommend for anyone. ... show more
Reviewed in the United States on June 4, 2024 by R. Ruiz

  • Won't engage on completely DEAD battery. Otherwise, stellar performance.
Style: SuperCap 2
Would have given five stars except that when I tried it on my small pickup with an all-but-dead battery, the 100% charged unit would not allow itself to engage. I'm guessing this is a protection feature, since the battery in my truck was only showing 0.3v on my multi-tester. The Supercap2 could not 'detect' a battery and to prevent a me from activating it hooked up backwards (pos on neg, neg on pos) it simply would not work, even though fully charged. Makes sense I guess, but it was a pain to prep here at home (I was testing it here). I had to use a battery powered jumpstarter hooked up, providing enough juice so the Autowit unit could 'see' the battery, to get it to work. In the field, without a supplemental charging source to augment the completely dead battery, I would have been stuck. All of this said, the unit cranked REALLY STRONG and still had 90% charge left after starting. Highly recommended for most use cases. One more note for those not familiar with supercapacitor jump starters: they do NOT hold a charge in your trunk. They require charging from some kind of source, like a weak battery, just before use. Read the sales literature carefully before you buy. A little trickier to use, but extremely strong cranking and will last a lifetime. ... show more
Reviewed in the United States on April 5, 2024 by Richard Huston

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