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🚗⚡ Jumpstart your freedom—compact power that never quits!
The AstroAI B8 is a compact, 8000mAh lithium polymer jump starter designed for 12V vehicles including petrol engines up to 7.0L and diesel up to 5.5L. It operates reliably in extreme temperatures (-20℃ to 50℃) and features 10 built-in safety protections. Beyond jump-starting, it doubles as a portable power bank and emergency LED light with multiple modes, making it an essential, all-in-one roadside companion backed by a 2-year warranty.














| ASIN | B0FB2L7CCX |
| Automotive Fit Type | Universal Fit |
| Battery Capacity | 8000 Milliamp Hours |
| Battery capacity | 8000 Milliamp Hours |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | 74 in Automotive ( See Top 100 in Automotive ) 1 in Car Battery Jump Starters |
| Brand | AstroAI |
| Brand Name | AstroAI |
| Compatible with Vehicle Type | Automotive |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 1,759 Reviews |
| Included Components | AstroAI B8 Car Battery Jump Starter, Pack with Giftbox, Smart Jumper Leads, Storage bag, Use Manual and Warranty card, USB Cable |
| Item Dimensions D x W x H | 8.3D x 16W x 2.8H centimetres |
| Item Type Name | jump starter |
| Item Weight | 650 Grams |
| Manufacturer | AstroAI |
| Manufacturer Part Number | B8 |
| Manufacturer Warranty Description | 2-year manufacturer's warranty |
| Model Number | B8 |
| Product dimensions | 8.3D x 16W x 2.8H centimetres |
| UPC | 810196490055 |
| Unit Count | 1.0 count |
| Vehicle service type | Automotive |
| Voltage | 12 Volts |
| battery-cell-composition | Lithium Polymer |
J**L
Best Jump starter & Power pack to charge ur phone etc
5/5 Stars - Absolutely Brilliant and Highly Recommended! I was a little bit skeptical at first because of how compact and small this device is, but wow, what an amazing little power pack to keep in the car! My car battery was completely flat, and this jump starter worked perfectly on the very first round. It started the engine instantly with zero fuss. It comes with very clear written instructions, and the video instructions on the Amazon page made it incredibly easy and safe to use. As a fantastic bonus, it also comes with a two-year guarantee warranty for peace of mind, and a lovely little storage baggy to keep everything neat and tidy in the vehicle. For the price and the small size, the power it packs is unbelievable. It has given me so much confidence and independence back. If you are on the fence about buying this, do not hesitate at all. It is worth every single penny and is a complete lifesaver!
A**.
Brilliant starter and 5 stars
Does what it says with ease. Great booster and starter. Charge is excellent and lasts at least 3 months, usb charge is real handy for the car and you can charge off the tool too. Light is good and easy to use. Fits in the bag inside the door pocket of the car and it's there when you need it. Well worth the money and 5 stars for quality and functions.. even my Mrs could use it and that's saying something.. lol
K**R
Great and Useful Gadget
The product was delivered with proper instructions and all the requisite attachments. The pack was also well over half-charged when it was delivered. It is nice and compact in size, so hardly take up any storage room in the car. The instructions were easy to understand, and the charger itself is very easy to assemble and use. It also comes with a handy drawstring storage bag to keep everything together. It is USB charged so I can plug it in to charge in the car or take indoors and charge like my mobile phone - all nice and easy. My car battery was fairly new, but I haven't used the car that much over the festive period and then there was a sudden, nasty drop in temperature so the battery had drained out and the engine wouldn't turn at all. But this charger worked like an absolute dream! I used it after a quick top up of the power pack (just to make sure) and the car turned over immediately - no problem at all. Fantastic! It was quite a relief - brilliant! I live in the middle of the country and my nearest garage is nearly 6 miles off, so professional help is not close by. Having this charger means I'm no longer reliant on jump leads and the kindness of others if this happens again. So all in all, the charger is well worth the price. It's now essential kit in the car - it gives me a lot of peace of mind.
R**S
Great little product!
Works great! I would give 5 stars but the jump cables could be a smidge longer, it can be difficult to get enough reach to find a good earth point depending on the vehicle.
I**N
Beyond incredible!
No sooner had it arrived, I charged it to full power and used it to jump start my vehicle which has been lying fallow in the garage. And it did jump start the vehicle and boost it to life. Small device with yet an amazing power It is so compact and yet can also serve as a power bank, and light source.
I**K
Great product at a good price and works perfectly
I purchased this as my previous RAC jump charger battery stopped working. That charger was huge compared to this small compact charger. Quality The build quality of this charger is good with a full charge taking 1-2 hours (mine came with 25% charge out of the box) and it is recommended to charge to 100% when you get it. The charger is built out of strong plastic and overall not particularly heavy and can easily fit into your glove box. WHAT’S INCLUDED? You get the charger a USB charging cable and a crocodile clip accessory that plugs into the charger to allow you to connect it to the car battery HOW DOES IT WORK? After charging the Powerbank for a couple of hours to 100% I connected it to my car allowed it to charge the battery for a couple of seconds and was instantly able to start the car with no problem. This is hugely impressive. The charging cable to connect it to the car battery you simply plug one end into the portable charger and connect the red and black clips to the appropriate terminals on the car battery. The connecting cable even has flashing lights to indicate whether you’ve connected it the right way or not - a bit of a safety mechanism built into the adapter. OVERALL I’ve been left hugely impressed by this compact current battery charger. It has the ability to also charge your device as such as his phone iPad, et cetera as well as being able to charge/boost your car battery. I would highly recommend this product.
P**L
BRILLANT!
Fantastic bit of kit, gets you and others out of trouble (helped 3 people start there car. It will start almost anything, it started my neighbours 2 tonne 3L diesel van. Also you can charge devices like mobiles, laptops with it, great for camping. You can keep it fully charged whilst your driving (usb), buy one it coul just get you out of trouble stuck in the middle of nowhere with a flat battery
J**E
Works like a charm
A perfect gadget which I bought to help my neighbour, whose car battery went dead. Easy to connect (very straightforward and a light indicator goes green/red to show wether you did it well or not). Jump starts the car in a flash, you then disconnect and go on with your way. Charges like a usb power bank and can act like one and has a built in flashlight. The one thing is that if your battery is not straight in the front hood , then the jumping cables maybe too short for you. Other than that - this is perfect.
J**N
Very convenient, powerful, holds a charge
Very convenient, powerful, holds a charge. I’ve had this for over 3 months now and it’s still at 97% which is pretty good imho. It’s a handy thing to keep in the trunk for an emergency. Not necessarily even for you but a family member or colleague - will make jump starting their car easier than opening your hood, dealing with connecting the two cars, etc.
E**S
Es muy práctico para una emergencia
Realmente asombroso, lo hemos utilizado y ha funcionado de maravilla.
C**C
Great product
Absolutely life saver! Charged it to full and it worked! Got my car up and running! Initially I clasped somewhere wrong and the jump starter went into protection mode, but fixed that up and it worked! I did hope that it would be more specific in the instructions for using it though. It's sufficient but still not as much as my panicking self hoped and needed.
W**K
A little powerhouse. Highly recommended.
I got this for my 2007 Harley with an alarm. Sooner or later, ya got to jump it. This thing weighs nothing, takes up no space(less space than a pair of normal jump leads!), and yet easily jumps the bike and shows full bars afterwards. It even jumps the diesel volvo and the turbo Subaru no problem only using one bar. I highly suggest it.
T**!
Very happy
I ordered this a bit sceptical, as I'd purchased another brand previously and it didn't ever work. Also, the reviews are mixed as to whether it had an Australian plug or not. Well, this arrived a few days ago and it came with a USB charger that worked fast and well. Once fully charged, I used it to jump my car which was dead dead. The car started immediately!! Very happy, highly recommend!
Trustpilot
1 month ago
1 week ago