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AstroAI B8 3000A Car Battery Jump Starter, 12V Jump Starter Battery Pack

  • Based on 246 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Oct 13
Order within 18 hours and 19 minutes
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Color: Coral


Features

  • RELIABLE JUMPSTARTING PERFORMANCE: The AstroAI B8 delivers a powerful 3000A peak current, enabling quick starts even in extreme temperatures from -4F to 122F (-20C to 50C). It can easily jumpstart up to 9L gasoline and 7L diesel engines,
  • COMPREHENSIVE PROTECTION: This jump starter offers 10 safety features, including reverse polarity, overcurrent, overcharge, overdischarge, high temperature, reverse connection, overvoltage, overload, short circuit, and spark-proof clamps.
  • COMPACT & SLEEK DESIGN: Weighing just 11.61oz, this jump starter's slim, portable design fits easily in tight spaces, making it ideal for outdoor adventures and emergency situations alike.
  • QUICK & EFFICIENT CHARGING: The B8 Jump Starter features rapid charging capabilities, fully recharging in just 3 hours - saving time and ensuring you're always ready to get back on the road when needed.
  • 5-IN-1 MULTIFUNCTIONAL USE: Aside from working as a powerful jump starter, the B8 also functions as a portable power bank to keep your devices charged on the go. It features a built-in LED light with three flashlight modes, including illumination, SOS, and strobe, providing essential lighting and signaling in emergencies. This versatile tool ensures you are prepared for everyday needs, outdoor adventures, and unexpected roadside situations.
  • COMPLETE ACCESSORY KIT: This package features a full set of accessories, including smart battery clamps, a USB A-C cable, a user manual, and a storage bag, providing everything you need for convenient and hassle-free use.
  • Key Tips & Support: For optimal performance, we advise reviewing the manual before first use and recharging the unit every three months. To compensate for variables like temperature, battery level, and vehicle condition, always select a model with specifications that comfortably exceed your vehicle's requirements. If you have any other questions about our products, please feel free to let us know at any time.

Description

Which types of vehicles is this jump stalter suitable for? The B8 is suitable for all 12V vehicles, including cars, motorcycles, all-terrain vehicle (ATV), lawnmower, snowmobiles and more. Why did the jump start fail? • Low charge: ensure the jump starter battery is above 75% • Dirty terminals or loose clamps: clean and secure connections • Wrong polarity: ensure red is on positive (+), black on negative (-)

Brand: AstroAI


Battery Cell Composition: Lithium Polymer


Voltage: 12 volts


Product Dimensions: 5.35"D x 9.05"W x 2.79"H


Vehicle Service Type: All of the above


Battery Type: Lithium Polymer


Voltage: 12 volts


Compatible with Vehicle Type: All of the above


Battery Capacity: 8000 milliamp_hours


Amperage: 3000 A


Automotive Fit Type: Universal Fit


Item Dimensions D x W x H: 5.35"D x 9.05"W x 2.79"H


Item Weight: 12 ounces


Brand Name: AstroAI


Manufacturer Part Number: B8


Manufacturer: AstroAI


Number of Items: 1


Number of Packs: 1


Item Highlight: SuperSafe Portable Jump Box with 3 Modes Flashlight and Jumper Cable, Up to 9.0L Gasoline and 7.0L Diesel Engine, Coral


Unit Count: 1 Count


Included Components: Jump Starter


Model Number: B8


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 13

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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Life Saving
I cannot tell you enough how wonderful this product is. I have had to jump my V8 SUV so many times because I was too lazy to get a new battery. It has never let me down. The best part is I can do it by myself and not have to find someone to jump the car. The battery life is long. I have only had to charge it once and that was the initial charge. It stores perfectly in my console and very easy to use. I bought 5 more and gave it as Christmas presents. Highly recommend everyone get one. ... show more
Reviewed in the United States on April 12, 2026 by Kelly Sleeper

  • Jump saver
Was dealing with the battery that was dying so he constantly had to jump it. I can’t tell you how many times we jumped it until finally, the battery just died but no fault of this products abilities to jump a battery. It was just a dying battery but the jumps worked every single time. must have in the car. ... show more
Reviewed in the United States on July 2, 2026 by iguy

  • Give one to the dead battery family member!
Works great and saves you from having to get a jump or maybe even going to give someone a jump. I gave it to a family member that constantly has dead batteries. It allowed me to get mine back and avoid calls for help at the most inconvenient times. Great power for its size. It’s also easy to use if my nephew can operate it. ... show more
Reviewed in the United States on August 16, 2026 by Dave E

  • Space saver
Bought as gifts for my husband and son. Like knowing son has it in his truck. Has came in handy not just for trucks but also riding mowers. Like the size and able to use different places. Saves on space instead of long battery jumper cables
Reviewed in the United States on July 16, 2026 by handerson

  • Fast shipping and easy to use!!
Already had to use it once and it worked perfect. Cheap and works good
Reviewed in the United States on September 29, 2026 by Matt

  • Easy to use and compact storage
Simple to use, easy compact to store in car, do prefer the ones with light included but excellent price point.
Reviewed in the United States on September 18, 2026 by Wenders

  • Works
Had a dead battery on my truck and was able to start it right up with this unit.
Reviewed in the United States on August 26, 2026 by N

  • Great durability.
Very durable and works excellent. I have used this to jump start a jetski and I was skeptical that bouncing around in the lake would beat it up, but held up great.
Reviewed in the United States on August 5, 2026 by Jesslucki

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