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AstroAI Jump Starter S8 Ultra, 4000A, 88.8Wh, USB Quick Charge, for 10.0L Gas & 8.0L Diesel

AstroAI S8 Ultra: 4000A Portable Booster for Large Engines

(41 customer reviews)

Original price was: $169.99.Current price is: $139.99.

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Rating: 4.7 out of 5 stars
Opinions & Reviews: 233
SKU: B0CB3W9FRD/com Category:

Product Features and Description

Imagine being stranded with a dead car battery; the AstroAI Jump Starter S8 Portable steps in as your quick-rescue gadget. This robust 4000A car jump starter breathes life into up to 10.0L gas and 8.0L diesel engines, making it the ultimate companion for nearly any vehicular emergency. 

Stay tuned as the upcoming review dives deep into the AstroAI S8 Ultra Battery Jumper Starter’s features, gathers user opinions, showcases reviews and comparison videos, and highlights the most attractive market offers available.
AstroAI portable jump starter with 24,000 mAh capacity and 4000 amps, suitable for up to 10L gas and 8L diesel engines
The AstroAI portable jump starter efficiently powers up to 10L gas and 8L diesel engines with a 24,000 mAh capacity and 4000 amp output, ensuring reliable performance in emergencies.
  • High-Performance Jump Starting: The AstroAI S8 Ultra car jump starter is equipped with a robust 4000 A current and a 24000 mAh battery capacity. It has a high discharge rate of 45 C, making it capable of jump-starting up to 10 L gasoline and 8 L diesel engines, even from a fully drained state. This astroai jump starter is perfect for heavy-duty use.
  • User-Friendly Operation: Featuring smart jumper cables with clear indicators, the S8 Ultra ensures a safe and straightforward operation. It automatically determines the battery voltage, optimally jump-starting batteries between 9-12 V without manual intervention. For batteries below 9 V, it prompts the user to press the Boost Button for immediate assistance.
  • Enhanced Safety Features: Safety is paramount with the S8 Ultra, which offers 10 protective measures including reverse polarity, overcurrent, and short circuit protections. This astroai jump starter is designed to be waterproof (IP 65), dust-proof, and drop-proof, ensuring durability and reliability under various environmental conditions.
  • Versatile Charging Capabilities: As a multi-functional power bank, the AstroAI jump starter comes with several output ports including USB-A and Type-C, catering to a wide range of electronic devices. From charging mobile phones to powering car vacuum cleaners, this jump starter meets diverse power needs efficiently.
  • Thoughtfully Designed: The design of the S8 Ultra prioritizes efficiency and safety, featuring smart battery indicators for ease of use. Its high-quality components ensure reliable and powerful performance, making it a dependable choice for jump-starting vehicles.
  • Essential for Roadside Emergencies: The S8 Ultra is more than just a jump starter; it’s a comprehensive roadside emergency kit. It revives vehicles swiftly, typically in under a minute. The built-in flashlight with three light modes enhances visibility for nighttime use, making it an indispensable tool for any driver.
24000 mAh power bank showing Type-C, USB-A, and QC 3.0 ports, plus LED flashlight
Explore the versatility of our 24000mAh power bank featuring dual Type-C and USB-A ports along with Quick Charge 3.0 for efficient power delivery and an integrated LED flashlight for convenience.

Born from a passion for innovation and adventures, AstroAI is dedicated to making every journey memorable. Whether you’re preparing for an exciting road trip or an exhilarating off-road ride, AstroAI’s rugged, high-performance jump starters are engineered to keep you powered up and ready to go. Their mission is to offer “Power Beyond Compare”, ensuring that your adventures are never cut short due to a dead battery.

One of the standout products in their lineup is the durable S8 Ultra Jump Starter. With its impressive 4000A capacity, it can instantly start even fully-drained batteries, making it a reliable companion for every journey. This powerful jump starter is designed to handle the demands of various trips, ensuring you stay on the move. Alongside the S8 Ultra, other AstroAI jump starters like the S8, 118, and T8 models also provide reliable performance, making AstroAI a trusted name in car electronics and household appliances. Whether you need the top-tier power of the S8 Ultra or the dependable performance of the T8, AstroAI jump starters are designed to meet a range of needs and adventures.

Astro rugged device being driven over by a vehicle on gravel, demonstrating its endurance
The Astro device showcases its exceptional build quality, designed to withstand extreme conditions, as demonstrated in this durability test. Perfect for outdoor and tough environments.

Key Features of the AstroAI S8 Ultra Battery Jumper Starter

Feature Description
Amperage & Peak Output Current – 4000 Amps
Excellent
The high amperage of the AstroAI jump starter enables it to deliver 4000 Amps of peak current, providing robust power for jump-starting vehicles up to 10.0L gas and 8.0L diesel engines efficiently. This high capacity ensures that even large vehicles can be jump-started with ease.
Batteries – Lithium Polymer
Good
The included Lithium Polymer battery in the AstroAI jump starter ensures long-lasting charge retention and durability, offering a reliable power source when needed for emergency starts and additional device charging.
Specification Met – IP65
Good
The IP65 rating of the AstroAI jump starter indicates its dust tight and protected against water jets, making it suitable for outdoor use and robust against various environmental conditions.
AstroAI rugged device being tested with water splash, showcasing IP65 waterproof rating
Experience ultimate reliability with the AstroAI waterproof device, featuring IP65 certification to withstand harsh weather conditions.

AstroAI Jump Starter: Real User Experiences – Strengths and Weaknesses

Reliable Performance

Users are consistently impressed by the reliable performance of the AstroAI Jump Starter. Dwight Leon praises it as a “solid, well-made component”, highlighting its sturdy construction. Similarly, Mr. J describes it as “small and compact” but notes that it “does a damn good job jumping/boosting batteries”, making it a dependable tool for various battery issues.

Ease of Use

Many customers appreciate how easy the AstroAI Jump Starter is to operate. C. George states that it is “as advertised” and expresses being “well pleased” with the product, while topcatrich simply mentions “easy operation”. This user-friendly nature makes it accessible even for those who are not mechanically inclined.

Value for Money

Maxy D emphasizes the product’s excellent value, describing it as a “lifesaver” and the “best $100 I’ve spent in quite some time”. The product’s ability to charge a dead battery effectively and quickly further solidifies its reputation as a cost-effective solution.

Storage Case Quality

Despite the high performance of the jump starter itself, FlyTech points out a significant drawback: the quality of the storage case. He compares it to “recap tires on a Ferrari”, expressing a preference to pay more for a better-quality case. This sentiment suggests that the current bag may not adequately protect the device or match its overall quality.

Limited Initial Use Cases

Kenneth Alvin Solomon, Ph.D., while giving a positive review, mentions that he has not yet used the product to jump-start a battery but finds it to be “well manufactured and charged well”. This indicates that some users might purchase the product for future emergencies rather than immediate use, which may limit the feedback on its full capabilities initially.

Overall, the AstroAI Jump Starter is highly praised for its reliability, ease of use, and value for money. However, some users find the storage case lacking in quality and there may be a period before all customers can fully test its jump-starting capabilities.

The stars speak of…

Opinions about this product were divided in such a proportion among the buyers.

 
Five Stars: 81%
 
Four Stars: 16%
 
Three Stars: 3%
 
Two Stars: 0%
 
One Star: 0%
The most helpful positive feedback Reviewed in the United States on February 5, 2024 by Maxy D, and is titled “Lifesaver! Worth every cent!”
Works beautifully charging the dead battery on my Acura RDX! The car sat with the dead battery for at least a week before I used this charger. I was a little amazed and very impressed! Hands down the best $100 I’ve spent in quite some time.
Customer Rating: 5
Helpful Rate: 3
 

Queries & Clarifications: All You Need to Know

Can the AstroAI jump starter be used for all vehicle types?

Yes, the AstroAI jump starter is versatile enough to be used on a variety of vehicles. It’s designed to start engines up to 10.0L for gasoline and 8.0L for diesel, making it suitable for most cars, trucks, motorcycles, ATVs, and even boats.

How many jumps can I get from a fully charged jumper starter?

On a full charge, the AstroAI jump starter can jump-start a vehicle multiple times. It can provide up to 30 jump starts, depending on the battery’s condition and the size of the vehicle’s engine.

What safety features are included with this jump starter?

The AstroAI S8 Ultra includes several safety features to protect both the user and the vehicle. These include reverse polarity protection, over-current protection, overload protection, over-voltage protection, and over-charge protection. The device is also IP65 certified for water and dust resistance.

How long does it take to fully charge the AstroAI jump starter?

Using the included Type C or DC port, the jump starter can typically be fully charged within 4-5 hours. Always ensure it’s fully charged before taking it on trips for optimal performance.

Can the AstroAI jump starter charge other devices?

Yes, the AstroAI jump starter features USB quick charge ports, as well as a DC/Type C port, allowing it to charge smartphones, tablets, laptops, and other electronic devices. It’s a handy tool to have in emergencies or during trips.

What is included in the package with the AstroAI jump starter?

Along with the jump starter, the package includes jumper cables, a Type C charging cable, a DC adapter, a user manual, and a carrying case. The included lithium polymer battery is pre-installed, ready for use right out of the box.

What are the physical dimensions and weight of the jump starter?

The jump starter is compact, measuring 5.24 inches in depth, 10.31 inches in width, and 4.29 inches in height. It weighs approximately 2.13 pounds, making it easy to store in your vehicle and carry around when needed.

AstroAI durable object partially buried in sand with the label visible and text overhead stating 'ZERO DUST, MAXIMUM SAFETY'
The AstroAI device showcases its robust, dust-resistant properties in a challenging outdoor setting, emphasizing its safety and durability features.
Jump starter device showcasing 10 safety features including overcharge, short circuit protection, and spark proof protection
Explore our safety-enhanced jump starter, equipped with 10 protective measures and patented technology to ensure reliable vehicle starting.
AstroAI power bank charging via USB-C cable, rapid charging feature highlighted, no wall charger included
The AstroAI portable power bank efficiently recharges within 4.5 hours via a USB-C connector, emphasizing rapid charging technology. Note: wall charger not included. Perfect for on-the-go energy needs.

Additional information

Brand

‎AstroAI

Product Dimensions

‎5.24"D x 10.31"W x 4.29"H

Item Weight

‎2.13 pounds

Amperage

‎4000 Amps

Peak Output Current

‎4000 Amps

Specification Met

‎IP65

Manufacturer

‎AstroAI

Batteries

‎1 Lithium Polymer batteries required. (included)

Manufacturer Part Number

‎S8 Ultra

ASIN

B0CB3W9FRD

Best Sellers Rank

#1,686 in Automotive (See Top 100 in Automotive) #26 in Jump Starters

Date First Available

January 3, 2024

41 reviews for AstroAI Jump Starter S8 Ultra, 4000A, 88.8Wh, USB Quick Charge, for 10.0L Gas & 8.0L Diesel

  1. Sandy&TJ4Ever

    Best jump starter

    We got it right on time to go to work in the morning and it came with a full battery charge. We’ve used it a few times and it’s easy to use, compact and starts right away. Customer service reached out to give an explanation of the warranty and how to use best. 2 thumbs up.

    Variation: Color: Orange / Reviewed in the United States on November 10, 2024
  2. molgor

    Works great

    As a single person, I don’t always have someone to depend on to help me with car troubles. Recently battery died and I purchased this. First of all, it came fast, a day or two after purchasing. Second, instructions are easy to understand, charging the unit didn’t take long and most importantly, it worked, car is running as I write this! Although I just got it and haven’t tried using it as a power bank for charging devices, that will come in handy the next time there’s a power outage and my phone battery is dying! Overall very satisfied with this purchase and would recommend to friends and strangers alike!

    Variation: Color: Orange / Reviewed in the United States on November 10, 2024
  3. Scott

    Not used yet

    Great 60 sale price for this size. Specs say 6 Ah @ 14.8V (88Wh) which is comparable to a large 20V drill battery. The temperature spec say operating 4-122F and charging 32-131F. It should be taken out of the car in below 0 weather or risk damage. It also says not to use it below 3 bars or 75%. The output is 900A for 1 sec or 500A for 3 sec. I have to assume it can do that at cold temperatures too. It is hefty compared to my old 33Wh one that started to bulge and didn’t hold a charge like it used to. The storage bag seems fine and it did come with a USB-C charger and 12V socket that should work with a small tire pump or radio.

    Variation: Color: Orange / Reviewed in the United States on November 8, 2024
  4. Zhao Yun

    Pretty impressive for the cost.

    I actually purchased two of these devices because the 1st one I bought was a smaller model for around 20$. They have built in flashlights, charging ports for USB devices, and will provide both power to my motorcycle (which is required to move it at all) if the battery is low/dead. It has strong enough cranking power to start a car, so my motorcycle will easily start with them. The larger modle will likely start a semi-truck, depending on the cranking amp requirements. When on sale, definitely worth every penny. Even if you don’t need to jump your battery off, it’s great for emergencies, and doesn’t put your own battery at risk by using standard jumping cables. Plus, with the capacity, they work great for charging any device.

    Variation: Color: Orange / Reviewed in the United States on November 8, 2024
  5. Steph

    Doesn’t jump an F350

    Has jump started a couple of Harley’s with no issues

    Variation: Color: Orange / Reviewed in the United States on November 4, 2024
  6. Seyran Yegiazaryan

    Quality

    Works good and it’s compact

    Variation: Color: Orange / Reviewed in the United States on October 28, 2024
  7. Vincent Flowers

    Make sure you charge it first

    It did what it was purchased for.

    Variation: Color: Orange / Reviewed in the United States on October 27, 2024
  8. Don Walker

    Perfect Size

    Easy to use. Easy to fit under your seat.

    Variation: Color: Red / Reviewed in the United States on October 24, 2024
  9. Ester Zuniga

    Muy bueno

    Exelente

    Variation: Color: Orange / Reviewed in the United States on October 17, 2024
  10. The Happy Chef

    Battery on generator died.

    Charger worked great. Charger came just in time. We jump started the generator and because of that we served many people decent meals.

    Variation: Color: Orange / Reviewed in the United States on October 4, 2024
  11. j ryan

    Looks and Feels Heavy Duty

    I have not used it yet but it looks very heavy duty. The only thing I can complain about is at that price, you’d think it would come WITH a hard shell case. It only came with a flimsy nylon bag with a pull string to put everything in. That’s cheap of you, boys. Very cheap.

    Variation: Color: Orange / Reviewed in the United States on October 1, 2024
  12. Fanny

    Great product

    Received it getting with a friend to learn all the capabilities

    Variation: Color: Orange / Reviewed in the United States on September 30, 2024
  13. Loretta Denney

    Charged my battery fast

    AstroAI S8 Ultra Battery Jumper Starter Charged my battery as soon as I connected the cables a real life safer! I had my doubts, but I was tired of asking my neighbor for help every time. It’s worth the money

    Variation: Color: Orange / Reviewed in the United States on September 26, 2024
  14. Bruce Alter

    Diesel truck jumper

    Have not used yet but hope it will jump a diesel 6.5 litter engine when needed.the price point was also good.

    Variation: Color: Orange / Reviewed in the United States on September 24, 2024
  15. Martin B.

    Perfect timing.

    I thought I’d buy one for the up coming winter for the wife. Little dud I know, shortly after receiving it, the battery died in my pickup. Works great. Easy to use. Good quality!

    Variation: Color: Orange / Reviewed in the United States on September 20, 2024
  16. Amazon Customer

    Charged up fine

    I just got it, charged it up but have not had the need to use it yet. It seems to be sturdy and well built, several accessory ports for various needs.

    Variation: Color: Orange / Reviewed in the United States on September 18, 2024
  17. Sharon Webb

    Worked exactly as advertised!

    A super convenient little item to have around the house! My husband used it to start his car within the first week that we had it. Worked like a charm. Great purchase!

    Variation: Color: Orange / Reviewed in the United States on September 15, 2024
  18. Arowan

    So far, so good.

    This far, it’s jumped stone dead car batteries up to a 5L mustang V8. Used it to jump some 3/4 tons in conjunction with a 2000 amp NOCO. Haven’t wasted time trying it by itself. Cables are like…. 6 gauge?

    Variation: Color: Orange / Reviewed in the United States on September 15, 2024
  19. Maxine Schvaneveldt

    Love how compact it is.

    I haven’t had to use it , but I like the ease of use it appears to be!

    Variation: Color: Orange / Reviewed in the United States on September 12, 2024
  20. Patrick Hangpeng Zhang

    I often forget to turn off the DVD player in the car,but now I don’t have to worry about it anymore!

    The media could not be loaded. very good!

    Variation: Color: Orange / Reviewed in the United States on September 9, 2024
  21. El prutky

    Great for emergencies!!

    Small enough to carry anywhere. Good quality. Very good price. A must have.

    Variation: Color: Orange / Reviewed in the United States on August 31, 2024
  22. Wcantu

    El Poder en el momento que lo necesitas

    Es un producto que me dió más de lo que esperaba. Cómodo para su transporte y con el poder que necesitas

    Variation: Color: Orange / Reviewed in the United States on August 28, 2024
  23. JUANGEV

    Super easy use

    Great gift and good for random battery dying moments

    Variation: Color: Orange / Reviewed in the United States on August 27, 2024
  24. william gorton

    Battery Jumper

    Worked for me when I had to jump start car no problems

    Variation: Color: Orange / Reviewed in the United States on August 27, 2024
  25. Coho

    Won’t start the tractor

    It won’t start the diesel JD tractor. It turns over for a second and cuts out. After a couple tries, the negative lead started to smoke. The Noco gbx155 starts it no trouble.

    Variation: Color: Orange / Reviewed in the United States on August 25, 2024
  26. Amazon Customer

    Great Price

    Works as expected when you need it!!

    Variation: Color: Orange / Reviewed in the United States on August 23, 2024
  27. Bazza.

    Very portable. Easy to store.

    I bought it for peace of mind throughout the winter months on the ranch. For use on a variety of equipment. Seems simple and easy to use.

    Variation: Color: Orange / Reviewed in the United States on August 21, 2024
  28. doctrains

    Works fine, even with totally dead battery.

    Most new chargers have government mandated“safety” requirements that prohibit them from starting charging unless they read the right polarity. A completely discharged battery will not start a new charger. Not only does this thing jump off without all that foolishness, but I have hooked up a new charger to a stone-dead battery and then hit it with this booster, and it started the charger so I could give in a nice slow charge. My son tells me most batteries are never stone dead and this is not an issue. Almost without fail, the dead batteries I encounter will not start one of the new government designed chargers. I love this thing!

    Variation: Color: Orange / Reviewed in the United States on August 21, 2024
  29. John McElmeel

    Haven’t tried it yet

    I haven’t tried it yet. Doesn’t know if it will jump. Start a vehicle. So I really couldn’t tell you but I’m sure it does work because it charges my phone. And I’ll be using it during hunting season.

    Variation: Color: Orange / Reviewed in the United States on August 21, 2024
  30. David

    Great for dead battery

    Ordered this unit on sale on a Sunday afternoon and it was on my porch Monday morning free overnight delivery. It was 3/4 charged so I charged it for maybe an hour and used it right away to start my Ram CV Three weeks later I used it to start my wife’s dead Subaru and it was still charged full. I like this better than a battery charger or jumper cables and it is small and portable. There are probably other units like this that work just as well. I recommend getting something like this and I am very happy with this one.

    Reviewed in the United States on August 13, 2024
  31. Sheri valentine

    Dissatisfied for the cost

    Light d I didn’t work

    Reviewed in the United States on August 7, 2024
  32. Nichols

    Jumpstarter

    Have not used yet, but no someone who have one and is happy with it.

    Reviewed in the United States on August 7, 2024
  33. Amazon Customer

    Small package power

    Very nice portable power pack with plenty of juice to jump off near dead batteries. Could have slightly longer cables should you be using it for larger vehicles like pick ups.

    Reviewed in the United States on August 6, 2024
  34. Dwight Leon

    Solid

    Solid. Well made component!

    Reviewed in the United States on July 9, 2024
  35. Kenneth Alvin Solomon, Ph.D.

    Well worth the cost

    While I have not yet used it to jump start a battery, it is well manufacture and charged well

    Reviewed in the United States on July 7, 2024
  36. FlyTech

    Recap tires on a Ferrari

    Come on AstroAI you made a Ferrari Battery Pack and gave us a cheap ugly bag to put it in. I rather pay $20 more for a nice storage case to come with it.

    Reviewed in the United States on July 7, 2024
  37. C. George

    Perfect

    As advertised! Well pleased. Would recommend.

    Reviewed in the United States on July 6, 2024
  38. Mr. J

    A must have

    Small and compact and does a dam good job jumping/boosting batteries. Will buy another.

    Reviewed in the United States on April 27, 2024
  39. topcatrich

    Powerful

    Easy operation

    Reviewed in the United States on March 30, 2024
  40. Mariana

    Buenisimo

    Mejor fuerza

    Reviewed in the United States on March 13, 2024
  41. Maxy D

    Lifesaver! Worth every cent!

    Works beautifully charging the dead battery on my Acura RDX! The car sat with the dead battery for at least a week before I used this charger. I was a little amazed and very impressed! Hands down the best $100 I’ve spent in quite some time.

    Reviewed in the United States on February 5, 2024
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