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🚗⚡ Never get stranded again — your ultimate roadside lifesaver!
The AstroAI B8 is a compact, lightweight 12V jump starter power pack designed for 7.0L petrol and 5.5L diesel engines, including motorcycles. Featuring a robust 29.6Wh Lithium-NMC battery, it operates reliably in extreme temperatures (-20℃ to 50℃) and incorporates 10 safety protections to ensure secure use. Beyond jump-starting, it doubles as a portable power bank and includes a versatile 3-mode LED flashlight. The complete kit comes with smart clamps, USB-C charging cable, storage bag, and user manual, making it an essential, easy-to-use emergency tool for modern drivers.









| ASIN | B0FB2L7CCX |
| Automotive Fit Type | Universal Fit |
| Battery Capacity | 8000 Milliamp Hours |
| Best Sellers Rank | 41 in Automotive ( See Top 100 in Automotive ) 1 in Car Battery Jump Starters |
| Brand Name | AstroAI |
| Compatible with Vehicle Type | Automotive |
| Country Of Origin | China |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,286) |
| 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 |
| UPC | 810196490055 |
| Voltage | 12 Volts |
| battery-cell-composition | Lithium Polymer |
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.
A**D
Recommended buy!
Great device that is well worth the money. So far jumped an Audi a3 2 litre an a 1.4 Hyundai i20 that had flat batteries. It started them straight away without missing a beat and no struggling like you sometimes get with jumper cables on another car. The pack charged quite quick and came in the box with half battery. Box included the jumper cables module, usb charger without plug, and a carry bag. It’s about the size of a portable phone charger a bit larger than an iPhone pro max. It’s light weight and built very well. After starting the 2 cars it’s still at full battery so can see it lasting a while so gives peace of mind if you keep it in the car. Well worth the price and definitely more affordable than the other brands on the market charging double or triple the price. As it’s a power pack looks like you can also charge your phone from it using usb A as an output and also has an inbuilt small light. Highly recommend. I bought based on the other positive reviews and happy with the purchase
M**K
Price and size, excellent product.
I bought one of these a while ago, for my work van as it stood around at times, but never had it with me when I needed to jump start another vehicle, a large battery on a Land Rover, so for quickness I ordered another one, wasn't expecting to much, gave it a full charge, vehicle wouldn't turn over, put the jump pack on, it starts to flash and tick, gave it a few seconds, turned the ignition and it started first time. It's a heavy vehicle, large engine, but these little jump pack managed a good few times until I managed to change the battery. It's got a bright light, it's a USB charger as well, an excellent little bit of kit, I've got 2, and would recommend it to anyone, for the price, and the size, absolutely fantastic.
P**.
Needs direct connection to battery.
It's good little power pack and started my van straight away but one thing to consider is the connection points. My VW Crafter has the battery stored under the driver's seat and the +&- terminal to jump start are in the engine bay and 0.5m between them. Unfortunately the supplied cables don't reach both but not a major issue as long as you can find a good earth somewhere else.
J**E
Genius!
What a gem! I have a Fiesta that frequently has a flat battery, this wee product has been a game changer. It takes no more than a minute to open the bonnet, attach the leads to the charger unit, and bish bash bosh.....the car starts first time. There's also a built in led torch which is super handy, and you can use the unit to charge your phone/ lap with the USB port. Just remember to recharge the unit to 100% after using, then pop it back in the glove box. It's soooo easy, even a complete numpty (like myself) can manage this. Would probably take most non car engine knowledge persons longer to find the bonnet catch! Cannot recommend this item highly enough!
P**E
Great bit of kit
Great, little charger this. Came quickly and came in handy for my mrs. Whose car wouldn't start the other morning. Put this on the battery terminals. Waited about 10 seconds then started the car up. Voila! Great bit of kit to have in the boot
M**S
Instant power delivery to you car faf free.
If I could be bothered I would be jump starting all kinds of weirdos with this Amazing compact tool, it's just so easy. Delivered with 75% charge, charged to 100% before use on my car that has been sitting for about 4 months in the garage with little use prior to that. Took me 3 attempts to get the engine ticking over, but the booster started it on each attempt. So much better than hooking up another vehicle and reving the tits off it. The unit and leads are just right to sit on the battery and attach without loads of cable to manage. It's like adding a new battery, the power to start the car is instantly available.
D**!
Worth the money
Starts your car if you’ve got a flat battery and really simple and easy to use. Came with 75% charge, took maybe an hour on a normal speed charger to get to 100%. Value for money is spot on, getting a charger that can charge your phone, iPads, tablets and whatever else is USB while gaining the ability to jump start your car. Only bought to leave in car when flying from airports so don’t have to wait around for breakdown assistance if the battery has gone flat, giving plenty of peace of mind. Also comes with a quality storage bag.
J**N
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.
J**L
Die AstroAI B8 Starthilfe Powerbank hat mich wirklich überzeugt. Das Gerät ist kompakt, stabil verarbeitet und lässt sich einfach im Auto verstauen. Die Starterkabel sitzen fest und sicher, und selbst bei einer entladenen Batterie liefert die Powerbank zuverlässig genug Energie, um den Motor zu starten. Die Bedienung ist intuitiv: Anschluss, Starttaste drücken – fertig. Gleichzeitig bietet die Powerbank zusätzliche Ports für USB-Ladungen, was unterwegs praktisch ist. Die LED-Taschenlampe mit mehreren Modi ist ein zusätzliches, nützliches Feature. Für mich ein echtes Must-Have im Auto: arbeitet zuverlässig, lässt einen nicht im Stich und ist preislich fair. Absolute Empfehlung!
N**S
TODO BIEN GRACIAS
C**C
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.
M**S
Lo compre de emergencia ya que mi camioneta (Suburban 2010 8cil) amanecio sin carga de bateria y no encendía, llego el mismo dia y lo cargue al 100 y lo utilice para que arrancara la bateria y funciono en el primer intento se gasto la litad de la carga del dispositivo lo que significa que tenia otro intento de encenderla. Excelente producto.
Trustpilot
2 weeks ago
2 days ago