Price: $299.99
(as of Oct 27, 2024 09:30:12 UTC - Details)

KeenPower SuperCap Portable Jump Starter 6000A Peak, Extremely Safe Super Capacitor Car Jump Starter Gasoline and Diesel Engines Up to 16-Liters
【SUPERIOR 6000A PEAK OUTPUT】With 6*3000F supercapacitors, our jump starter effortlessly outputs a staggering 6000A peak current, ensuring all 12V vehicles – from compact cars to heavy-duty trucks – start instantly.
【NO PRE-CHARGE NEED】With our advanced supercapacitors, jump-start instantly without ever pre-charging at home. Revive even with weak batteries in minutes.
【EXTENDED LIFESPAN】Boasting over 1,000,000 uses, our cutting-edge supercapacitor tech leaves traditional batteries in the dust.
【START ALL 12V CARS】Whether it's cars, trucks, tractors, motorcycles, RVs, or any 12V vehicle, our jump starter gets them roaring in minutes.
【BRACE ALL EXTREMES】Works in extreme environments（up to 158°F, down to -45°F）without losing performance.
Reviewer: Dee Wight
Rating: 5.0 out of 5 stars
Title: Worked right out of the box.
Review: I've been having trouble with several of my cars maintaining the batteries. My 1998 Silverado was left at my summer home and the battery would get so low that it would set off the car alarm. I charged the KeenPower off the dead battery and jumped the truck which started Immediately. I ran the truck for a few minutes, shut it off and tried to restart it without any luck. I recharged the KeenPower off the dead battery in three minutes and started the truck again. The truck battery can't keep a charge so I'll have to replace it.I also have a boat with twin crusader 200s that I haven't used since August on a mooring. Both starter batteries were dead and couldn't even run the bilge pumps. I turned over the first engine with the KeenPower but couldn't start it in the 25 seconds of discharge. I recharged it off the boat battery and started it on the second attempt. I recharged it again and started the second motor after two attempts.I really don't care what the critics and nay Sayers think about the KeenPower. I've never had a piece of equipment do what this thing did to my truck and my boat. No one in the boat yard could believe I could start the engines without having the boat towed to the dock.And by the way I also charge my cell phone to 80% capacity recharged the KeenPower and then charged the phone up to 100%.

Reviewer: B G
Rating: 5.0 out of 5 stars
Title: Its everything you imagined it would be and more! Best backup portable jump starter.
Review: I was so excited to use this after I received it, and it took a while to actually need it but when I finally did it was the coolest experience. I had a dead GMC Savanna work truck that had been double parked all day with the flashers on. There was nothing left when I got to it and barely had interior lights. No turning over at all. The Jump starter charged itself off the dead vehicle battery and when it had enough power, I initiated the jump feature, and the vehicle started like it had a fresh new battery in it with no hesitation. I have used it several times since and it worked flawless each time. It is smaller than I expected and doesn't feel super heavy duty but who cares if it does the job. I would say it takes between 2 minutes and 5 minutes depending on the state of charge left in the unit. I thought the capacitors would lose the charge, but it seems pretty stable when not used. Wouldn't matter though because it will charge right up off the failing battery. I had to use it again tonight to start my Dodge Durango which was run dead at a trunk or treat using the radio and interior lights for hours. It measured 10.3V when I attached the jump starter, and the battery pack took roughly three minutes to go from 18% to 100%. The previously "click only" state of charge instantly changed when the super capacitors threw power back, and it turned over the Hemi like there was never an issue. I am sold and am super glad I finally broke down and made the investment!

Reviewer: RoseOrchide
Rating: 1.0 out of 5 stars
Title: INNACURATE DISCRIPRITION DEFINITELY NOT POWERFFUL AS CLAIMED EVEN FOR A PRETTY SMALL CAR...
Review: This 6000A Super Capacitor Battery-Less Portable Jump Starter for 12V Car, Built-in 6 * 3000F Supercapacitor, No Pre-Charging Need, Extremely Safe, Always Ready Jump Start All 12V Car.Would struggle to jump start my daughter's battery which was only a year old but unused for almost 3 months & her car is from 2020 with low millage ( it a small car)....I first fully charged it to 100%, it arrived at 28%. VERY BAD box to jump start vehicles EVEN pretty small ones. ABSOLUTELY NOT POWERFUL AS IT CLAIMS TO BE. DEFINITELY NOT !NOT RECOMMENDED AT AL EVEN IF YOU GOT IT WITH THE 100$ DISCOUNT, WHICH IS WHAT I NEED. I will not spend even $100 on this . THEY ALL MUST BE DEFECTIVE one way or another. This will absolutely NOT last long NOT EVEN close!. :-((

Reviewer: Marlon M.
Rating: 5.0 out of 5 stars
Title: Awesome
Review: Definitely does the job #truckerlife only upgrade or change should be thicker guage cables

Reviewer: A.C
Rating: 4.0 out of 5 stars
Title: Based on what I’ve seen it’s a beast.
Review: I have a lithium battery starter I purchased before this, but after watching a review by Project Farm to see what’s new in the world of jump packs, I decided on this. It did the best in the cold when frozen, and some jump packs died, I suggest watching to learn more. This cranked the fastest when cold, but it was close for battery packs that cost as much as this or more. The reason I want both, is so I can charge the capacitor jump pack with the lithium pack if my vehicle battery is totally dead. If the battery has a decent charge, but not enough to start the vehicle, that same battery can charge this capacitive jump pack and still start the vehicle. Interior box had a small puncture but outside shipping box was undamaged and the unit appears undamaged and charges quickly with an iPad charger. Very nice construction and seems like it should last the 10 years advertised. Jump packs? 4 years at best. I just wish this came with a case, as it sure would be nice to have one. This was an expensive purchase for me, but once I saw it work on video, and understood the value, I wanted one. Tow truck jumps aren’t cheap, not to mention the wait, so it was an easy decision. Watch that video, you may come to the same decision I did.

Reviewer: Gary Millsap
Rating: 5.0 out of 5 stars
Title: Very impressive
Review: Much lighter than my old school jump box. Very impressed with the current output to start my dual dead batteries on my diesel truck.

Reviewer: Gary C.
Rating: 5.0 out of 5 stars
Title: An ideal jump starter!
Review: This unit quickly recharges itself, even from the same low battery that needs a jump start! Then it gives plenty of cranking power. As they advertise, you could jump start every car in the parking lot. And it's got super capacitors, which are not likely a fire hazard like lithium ion batteries. They should last much longer too. $300 is a high price, I waited and got it on sale for $200.