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.

- 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.

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.

Looking for reliable car jump starters? Check out our roundup highlighting the AstroAI S8 Ultra and other top portable models, perfect for gas and diesel engines. Learn more about their features and performance.

The stars speak of…
Opinions about this product were divided in such a proportion among the buyers.
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.
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.



Tim Zenor –
Great product
Great for the price
Charlie –
I was pleasantly surprised
So far so good. Boosted my car twice in a month
Dwight –
Loveit
Powerful it starts my van better than the battery buy it u won’t regret it
Amazon Customer –
Amazing starting power
amazing! started my 1970 ford F250 7.0 ltre 428 V8 from completely empty battery. Super simple to operate. Highly recommend
Dirk Banks –
Works great
I used it on my diesel tractor and as soon as I hooked it up it fired right off.
moxiecanoe –
Too big, too much.
I don’t know if it works. I returned it because I wanted something smaller. Also, it has outlets that I don’t think I will use.
Juan Carlos Garcia –
Satisfacción
Apenas me llego y ya he ayudado a más de tres personas que encuentro varados en la carretera, y la bomba de aire es excelente 👌 funciona a la perfección. Material de buena calidad
annie –
I have it just in case
Love it have not used it yet but I have it just in case
beemerguru –
Works but dim lighting
It works decent, but you can’t see the “power on” LED levels in the sunlight…too dim
Billy Parkinson –
Good value
It’s great. Just a couple of weeks ago, I had to use it to jump my work van off. Worked great
Lana D. –
You need this!
Everyones hould have a backup starter for your battery!
ShirHoll –
Looks good
Haven’t had a chance to try it out yet. Until I do, I can’t give it 5 stars.
jeffery a. nelson –
-10 below
Started my saab 9-3 in -10 below weather with a dead battery. Great life saver
Conner logan –
Works fast
My truck had been dead for a whole week this charger started it up immediately. Love it!
Oakwood5 –
It’s the very tool that I need for my vehiclesit was reasonably priced and delivered very promptly!
I love this electronic tester, it works great and it is reasonably priced,thank you!
Socorro –
Great
Great
D. Handler –
Comes without ac charger
Long cables for jumping
Stacey –
Life saver.
Love this. Had a bad battery in my husbands truck and jumped it 3 times over a 3 week period and still had 75% of the charge. Very handy to have.
DIYer –
Fantastic- started my F150 even when my other bigger charger failed
So surprised that it worked when my other charger wouldn’t. SO as a result I bought another for my Jeep. nice compact size and easy to use
Mz. Dezale –
I highly recommend this
My car started right up but I purchased a new battery just in case!
Bought two. One worked. One did not –
Powerful
Extremely pleased and surprised at the ability of this little unit to start a dead battery.