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AstroAI S8 Car Battery Jump Starter, Car Jumper Starter Battery Pack for Up to 6.0L Gas & 3.0L Diesel Engines, 12V Portable Jump Box with 3 Modes Flashlight and Jumper Cable (Red)

  • Based on 9,264 reviews
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Availability: In Stock.
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Arrives Saturday, Mar 28
Order within 18 hours and 36 minutes
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Color: Red - 1500A (S8)


Features

  • HIGH-PERFORMANCE JUMP STARTING - The car jumper starter portable pack has a 45C high-rate lithium battery and 37WH capacity that can start 6.0 L gas/3.0 L diesel engines and other 12 V vehicles like motorcycles, cars, SUVs, pickups, or lawnmowers.This jump starter's powerful 1500 A peak suit current quickly starts low-voltage and fully-drained batteries, stocking stuffers for men and women.
  • ULTRA POWERFUL BOOST - The smart boost mode automatically detects the battery's voltage. When the voltage is less than 9 V, the indicator flashes green; this unlocks the "BOOST" button, which can be pressed to start fully-drained batteries.
  • QUALITY METAL CLAMPS FOR IMPROVED PROTECTION - The safety metal clamps and smart jumper cable better protect the S8 Car Battery Jump Starter from excessive heat damage, loose ports, battery bulging, battery expansion, and more.
  • COMPREHENSIVE SAFETY - This portable battery jumper starter has 8 integrated protections including reverse polarity, reverse connection, overcurrent, overvoltage, overload, overcharge, over discharge, and short circuit protection. Ensure your trip is safe and smooth.
  • PORTABLE & COMPACT - With an overall size of 7.9*4.5*3.7" and a item weight of 0.95 lbs, it is very easy to store in a car or a travel bag. Compared with bulky lead-acid jump starters, this compact jump starter brings more convenience and peace of mind to your trip.
  • 5-IN-1 MULTIFUNCTION - This device functions as a jump starter, portable power bank, and an LED flashlight with 3 modes (flashlight, strobe, SOS). The AstroAI Lithium Battery Jump Starter is your reliable, all-around trip companion here to gear you up for every adventure.

Brand: AstroAI


Battery Cell Composition: Lithium-Nickel Manganese Cobalt (NMC)


Voltage: 12 Volts


Product Dimensions: 4.5"D x 7.9"W x 3.7"H


Vehicle Service Type: Passenger Car, Motorcycle, Van, ATV, RV, UTV, Truck, Watercraft, Tractor


Battery Type: Lithium-Nickel Manganese Cobalt (NMC)


Voltage: 12 Volts


Compatible with Vehicle Type: Passenger Car, Motorcycle, Van, ATV, RV, UTV, Truck, Watercraft, Tractor


Battery Capacity: 1500 Amp Hours


Amperage: 1500 Amps


Peak Output Current: 1500 Amps


Item Dimensions D x W x H: 4.5"D x 7.9"W x 3.7"H


Item Weight: 0.79 Pounds


Brand Name: AstroAI


Manufacturer Part Number: S8


Manufacturer: AstroAI


Global Trade Identification Number: 99


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Mar 28

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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Perfect Peace of Mind for My Daughter’s First Car
Color: Red - 1500A (S8)
I purchased the AstroAI S8 Car Battery Jump Starter for my daughter’s first car, and honestly, it’s one of the best “parent purchases” I’ve made. Knowing she has a portable car jump starter in her trunk gives me real peace of mind, especially as a new driver still learning to handle unexpected situations. The AstroAI S8 jump starter battery pack is compact, lightweight, and easy to use—even for someone with zero car experience. We tested it at home, and the instructions were clear and straightforward. It’s impressive that this 12V portable jump box can handle engines up to 6.0L gas and 3.0L diesel, which means it’s more than capable for her car and even mine if needed. I also really appreciate the built-in 3-mode flashlight (flash, strobe, SOS). That feature alone makes it a great safety tool, especially if she’s ever stuck at night. The jumper cables feel sturdy and well-made, not cheap or flimsy like some others I’ve seen. The bright red design makes it easy to spot in the trunk, and the battery holds a charge well. This car battery jump starter is now something I recommend to every parent with a teen driver—or honestly, anyone who wants to avoid being stranded. Reliable, easy to use, and great value. The AstroAI S8 Car Jumper Starter Battery Pack is a must-have for first-time car owners and families alike. Highly recommend! ... show more
Reviewed in the United States on December 27, 2025 by Jeff

  • Does it what it says.
Color: Red - 1500A (S8)
The device is very easy to use. Charges pretty quickly. And is definitely versatile. Works as advertised. Charges the car pretty quickly. I used it on my 2017 Mercedes Benz c63 AMG. So it has enough power to jump a V8. DO NOT leave the clamps after charging the battery inside the device. It drained my power bank. I contacted the customer support they have arranged a replacement at no cost. Thank you very much. Great experience despite the error. ... show more
Reviewed in the United States on March 5, 2026 by Pasha:S

  • Simple and effective
Color: Red - 1500A (S8)
Just used it today for a coworker, I hooked it up wrong the initial time and told her to start the car, oops. Nothing, no drama, just a little green indicator telling me to reverse the connection. I connected the clamps correctly and it started right up. This unit is very nice and compact, extremely simple to use and obviously idiot proof for a person like me. ... show more
Reviewed in the United States on February 26, 2026 by dlc

  • Works great never had a problem with its intended use even after about 7-8 months
Color: Red - 1500A (S8)
Never fails easy to use always starts my truck up just remember to charge it after each use which is easily done from the vehicle in a few minutes with the right charging setup defiantly would buy again I've paid more for other products that do the same thing this is by far the best for the price seems like its made a little cheap on the durability side but i keep it in the bag it comes with along with the cables in my truck under the seat and after having it for about 9 months this thing works great from my use good luck hope this helps... ... show more
Reviewed in the United States on March 18, 2026 by Ronnie Erpelding

  • Worth the cost for the ease of use .
Color: Red - 1500A (S8)
Works good just remember to charge after each use !
Reviewed in the United States on January 13, 2026 by Charles P.

  • Peace of Mind
Color: Red - 1500A (S8)
Been having some battery problems and needing to get my car jump started. Dealership hasn’t been able to replicate the problem so I’ve been on my own for now, which is why I decided to purchase this. I was at home the very first time I tried to use it, and it didn’t work, but that may have been user error on my end because I charged it again and then connected it to the car battery and it worked like a charm! The only thing I can think of is I had the order of operations wrong for connecting the cables the first time, so if you have issues that may be why. I have successfully used it twice now, once to jump my car (2016 Hyundai Sonata Hybrid) and then jump started a friend’s Honda civic. I’m definitely happy with this purchase and it gives me peace of mind. ... show more
Reviewed in the United States on February 2, 2026 by Amazon Customer

  • Small but Mighty!!
Color: Red - 1500A (S8)
The AstroAI S8 Car Battery Jump Starter was so little I didn’t know if it would work or not. It was 75% charged and I didn’t have a very strong adapter with which to charge it and I had called the AAA driver to give me a jump start, but when I showed him the little AstroAI S8, he said let’s try it and see if it works. So he attached the jumper cables to the correct terminals on the battery, told me to jump in the car and try starting it, I did and amazingly it gave a boost of energy and the car started right away!!! I was very impressed and thankful!!!…….Relieved!!! The driver also pointed out to me to remember to press the Boost button!! It only used 25% of its capacity!! I bought a good wall adapter so that I could charge it in the house and that worked great as well. I charged it for about 3 hours and the charge is reading 100% now!!! The ASTRO AI S8 is a great piece of invention and engineering!!! Thank You!!!! Diane ... show more
Reviewed in the United States on January 20, 2026 by Diane Newton

  • Easy and dependable
Color: Red - 1500A (S8)
This jumper is real deal. I had a complete dead battery, each time I used it the start was immediate. It is way to easy to use as a female who's out often alone. When I would go to store and my car was dead I felt confident I was ok without asking for help. I got my battery replaced and now I don't use it. Just keep it in my car. ... show more
Reviewed in the United States on February 1, 2026 by Classi.sassi

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