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· 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 CALMPS 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. · Additional Tips - Please check the manual for more information before using. Professional Technical Support Team - If you have any questions about the product, feel free to contact us! Our California-based support team will respond within 24 hours. · TIP FOR WINTER USE - To prevent battery performance issues in cold conditions, please store the jump starter at a proper temperature. Avoid charging or using the jump starter in extreme cold.
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Rob H.Reviewed in the United States on May 3, 2025
A portable time saver. Even if you have AAA. Easy to use. I used it to jump start my neighbor car that was stocked in his tight garage space. He actually bought one after I used mine on his car. Very versatile and powerful for its size. I jumped my Element with it several times. And it started with the turn of the key. Good for campingut comes with a cool little flash light and usb charging ports. Great price for what it does. 👍💥
Jason BurnsReviewed in the United States on May 7, 2025
Very very impressed. This little thing jumps my completely dead battery in my Escalade every time on the first try. Handy small bag. True life saver without lugging around large bulky jumpers or cables
Yvette EnglishReviewed in the United States on March 29, 2025
This thing is awesome and the value. I didn't have to buy a big expensive one. My Son and I were sitting in a parking lot and my battery died so a friend came and jumped us with one of these. I thought I need to get one. This this is amazing. It has a flashlight and we have also used it during tornado warnings. It has a power port for phones to be plugged in for emergencies. Highly recommend this jump box. It is compact and easy to store, handy in many situations and emergencies. I honestly has not had it die yet to find out the battery life and it works well for me as a single Mom being able to not have to worry about being stranded. I have decided I am buying it for my kids cars also. 10 out of 10
big papaReviewed in the United States on May 11, 2025
I was really skeptical about this item, but I bought it anyway. my car battery died and was down for 3 days and to the point that the interior lights wouldn't come on much to my surprise it fired right up. I would recommend this product to any and all who,like me,have wondered if it really works..... IT DOES. i carry it in my vehicle all time now, just in case.
Charlie M.Reviewed in the United States on November 10, 2024
This unit is an S8 1500 amp and I'm comparing it to a NOCO gb40 1000 amp.The quality is not as good as NOCO but it's at half the price of a NOCO and seems to do the job. I received it today it was fully charged I jumped two small V8 engines using the boost mode because the batteries was that dead and it used 25% of the charge for each time which is normal according to the manufacturer. I am now charging it back up just to have it charged back up, will update if anything is bad. One thing I would like to say is that the jump cables are smaller than the ones for NOCO these are 10 gauge and the NOCO is 8 or 6 gauge. Smaller the gauge the bigger the wire which is good. Having said that nothing got hot when I jumped these off within 5 minutes of each other not even the cables because the current it's only going through them for a short period of time. The heavier gauge wire would allow for more current to pass through even if you didn't have a good connection on the battery. One other thing is that the boost mode button is built into the jump cables on this unit whereas the noco is built into the main unit. The problem I see with that is that if the boost mode goes bad on the cables I have to buy new cables which is $25 and it will probably be cheaper to buy a whole new machine whereas the NOCO I spend $25 for the cables and the machine is $100 so it's worth it. As I said the noco is all on the main machine so the convenience of seeing it there without having to look at it at weird angles is a lot easier to use the boost mode and see the light to make sure everything is right. Having said everything that I said if I was buying it for me I would probably buy this again if I was buying it for someone that I wanted to make sure it was going to be a good one and easy to use I would definitely go with the NOCO. I know and trust that brand and the quality is definitely there because I can see the difference in quality between the two machines since I own both of them.
dmnorkReviewed in the United States on May 17, 2025
Giving this product 5 stars because of the great customer service. I ordered one of these a year ago. It originally worked fine. Initially charged up fine and worked. Was stored over the winter (heated indoors) and when I pulled it out this spring the batter was completely dead and would not accept a new charge at all. I left charging for over 36 hours and it was dead as a door knob. I contacted AstroAI customer service as there is a 2 year warranty and they replaced the unit immediately. I had one shipped and delivered from Amazon within a week of my original complaint.
DameReviewed in the United States on May 14, 2025
Works great and has fast charging. Quality it good and comes with it's own case to keep in your car.
GReviewed in the United States on April 14, 2025
FANTASTIC item for a teenagers car. Having one of these in their car safety/toolbox is a great idea especially if they're a young lady. She won't have to ask stranger to jump start her car with normal jumper cables. Super easy to use and small. We carry one in our side by side. GREAT ITEM and a GREAT PRICE.
FiorinaReviewed in the United Kingdom on August 12, 2024
Click to play video I bought this AstroAI S8 car battery booster as a gift for my sister, whose car battery tends to go flat because she doesn’t drive often enough. From the moment I opened the box, the quality of the product was immediately apparent. The build quality is evident straight away, instilling confidence that it’s designed to last. The packaging was sleek and stylish, and the unit arrived nearly fully charged, which was a pleasant surprise. Knowing my sister needed something reliable, I was eager to test it before she had to rely on it in an emergency. The jump starter surpassed expectations right from the beginning. We tried it on her car with a flat battery, and it worked flawlessly on the first attempt. Each jump start uses about 25% of the booster’s battery, but keeping an eye on the remaining power is straightforward thanks to the bright blue battery status lights. The unit is also very easy to charge using the included USB cable. Its ease of use is a major highlight. Just connect it according to the clear instructions, and the car started up in seconds. This level of convenience is a significant improvement over traditional jump leads, allowing her to be completely independent and avoid the awkwardness of asking a neighbour or stranger for help to jump-start the car. The clamps and cables are incredibly tough and durable, feeling nice and tight when secured to the battery, unlike the jump leads I’ve used in the past. The compact size of this booster is another strong point. It’s small enough to fit neatly in her older Fiat’s glove compartment without taking up much room, yet it packs a powerful punch. Despite initial doubts about whether such a compact device could handle an older battery, it performed admirably, even in cold weather when batteries are typically more challenging to start. Over the past month, she’s had to use it multiple times, and it has proven to be a dependable tool. The built-in LED torch is another thoughtful feature, making it easier to operate in dimly lit conditions, like early mornings or late evenings. The fact that it also doubles as a power bank for charging mobile phones adds even more value to an already impressive product. Considering its price, the AstroAI S8 offers exceptional value for money. Not only is it affordable, but it also delivers high performance, making it a smart choice for any car owner. Given that a single call-out for roadside assistance can cost twice as much as this booster, investing in one is an obvious decision and well worth every penny. The delivery was fast, and the overall service was excellent, making the entire purchase experience smooth and satisfying. I’m so impressed with its performance and build quality that I’ve decided to order one for my car as well. If you’re in the market for a reliable, powerful, and well-built jump starter, I highly recommend the AstroAI S8. I could kick myself for not buying one sooner. Thank you for taking the time to read my review. I hope that you found it helpful and that it assists you in your decision-making. I try to be as honest and fair as possible, as those have always been the reviews that helped me the most.
jay mReviewed in Canada on February 11, 2025
I am beyond impressed with this jump starter! It’s compact, easy to use, and has been a lifesaver on multiple occasions. The first time I used it, my car battery was completely dead, and this device started my vehicle in seconds—no need to wait for roadside assistance or ask strangers for help. The build quality feels durable, and I love that it also doubles as a portable charger for my phone and other devices. The instructions were clear, and the included safety features gave me peace of mind while using it. Even in colder weather, it performed reliably, though I did notice it worked best when fully charged. Overall, this is an essential tool for any driver, and I highly recommend it to anyone looking for a reliable, portable jump starter. Five stars without a doubt!"
JosephReviewed in the United Arab Emirates on February 11, 2025
I got it to help jumpstart my VW PASSAT V6 as the battery was completely drained while the car was parked for ~ 2 months. The unit was at 50% battery when received. The manual is great, simple and straight forward. I followed the instructions in the manual. It took approx. 1 hour to charge it via my phone's USB-C fast charger up to 100%. It took 2 attempts to start the car. The 2nd attempt was because I didn't wait the 30 seconds as per the manual's instruction in handling completely drained batteries in my 1st attempt. On the 2nd attempt, I followed the instructions for completely drained batteries and the car started smoothly. Both attempts used ~25% of the booster battery capacity. Over all, the package is great in size and weight. I like the idea it came with a small bag to house the booster and cables. The booster uses USB-C for charging. No more jump start cable hassle and no more waiting forever for insurance recovery.
Rocio BarbaReviewed in Mexico on May 14, 2025
Excelente producto. Funciona de maravilla. Indispensable traer uno en el coche para emergencias.
NickReviewed in Germany on March 8, 2025
Das Gerät ist einfach genial und macht genau das, was es soll, nämlich Starthilfe bei entladener Batterie geben. Wer hier negativ bewertet, der hat irgendwas falsch gemacht. Die Verpackung ist sehr edel, das Gerät auch, alles hochwertig und optisch ansprechend. Mein Mercedes A180 1,6 Liter startete nach 4 Monaten Standzeit und Überwinterung nicht mehr. Die Batterie hatte nur noch ca. 10,5 V statt 12 V. Also bestellte ich mir dieses Gerät hier. Es wurde sogar mit 100 % Akkufüllstand geliefert. Ich habe es gemäß Anleitung direkt an die beiden Batteriepole angeschlossen. Nach ein paar Sekunden erkennt das Gerät dann, dass es an eine KFZ Batterie angeschlossen wurde und die Connect LED leuchtet grün. Erst dann gibt es 12 V aus. Ich habe zur Sicherheit noch den Boost Knopf gedrückt. Man muss ihn kurz gedrückt halten, dann klackt es und dann kann man los legen. Da die Connect LED aber nicht grün blinkte, sondern grün leuchtete, war die Batterie nicht Tiefentladen und der Boost Modus wäre nicht unbedingt notwendig gewesen. Aber ich dachte mir viel hilft viel :D Danach habe ich die Zündung angemacht und das Fahrzeug startete sofort ganz normal ohne jegliche Verzögerung :) Anschließend hatte die AstroAI noch 75 % Akkufüllstand wie auf meinem Bild zu sehen ist. Ich gehe also davon aus, dass man mind. 4x Starthilfe mit Boost Funktion geben kann, ohne Boost wahrscheinlich öfters. Das aufladen mittels USB-C und meinem Smartphone Schnell-Ladeadapter ging auch recht zügig. Ich lade es jetzt immer voll und lege es dann für die nächste Panne in den Kofferraum. Da ich bald wieder in den Urlaub fliege und mein Auto dann am Flughafen stehen lasse, fühle ich mich jetzt mit der Starthilfe im Kofferraum auch deutlich sicherer. Fazit: Ich bin absolut zufrieden und konnte mir so den Batterieausbau zum externen laden sparen und das alles für nur 35 €, echt top :)