Customer reviews from Stanley12volt.com
Stanley - 1200-Peak-Amp 12-Volt Lithium Jump Starter, USB Power Bank, LED Light, Carrying Case, LJ12FC
Average customer rating
4.7
(79 Reviews)
Rating breakdown 79 reviews
5 Stars
66
4 Stars
9
3 Stars
1
2 Stars
1
1 Star
2
71%of customers recommend this product.
(
5 out of
7)
Customer Reviews for Stanley - 1200-Peak-Amp 12-Volt Lithium Jump Starter, USB Power Bank, LED Light, Carrying Case, LJ12FC
Customer Rating
5
Emergency jumper kit
on September 24, 2026
Posted by: StevenC
[This review was collected as part of a promotion.] This is by far the best COMPACT portable lithium jump starter I've ever owned! I've had my share of earlier versions of this type of product by other brand names and all of them were much bulkier and heavier than this by Stanley. I purchased this jump starter not knowing I'd be immediately using it on my ATV while riding in the local area woods. Turns out my battery died on my atv and I had no other way to get my machine running again. A not so quick run home for this reliable product and I was back in business. Once the cables are connected correctly, it automatically reads the connection with a green light to turn over whatever your jumpstarting. For me, my ATV started immediately back up and I was able to get it back to my trailer to take it home again. Lifesaver! I love how it has a little light on it in case you get caught in the dark on the side of the road. Helps to pinpoint the positive and negative side of the battery in which the cables go to when jumping. I also really enjoy the convenience of a nicely made case to keep everything neatly stored in one place.
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Functional and compact charging device
on September 23, 2026
Posted by: PatrickJ
[This review was collected as part of a promotion.] Very functional device that should go along on any road trip or long drive. Versatile performance to charge devices or be ready for jump start a vehicle should the need arise. Compact and comes in a nice case. Would recommend
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Nice
on September 23, 2026
Posted by: SlavaZ
[This review was collected as part of a promotion.] I got the Stanley Fat Max Jump Starter and it feels great to finally have on in the car. It’s compact, comes with a carry case and the clamps feel solid. It works for 4 , 6 and 8 cylinder engines and it doubles as a power bank with usb-c and usb-a port plus a handy led light for night emergencies. Simple practical and gives real peace for mind.
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Lightweight and convenient
on September 23, 2026
Posted by: RyanN
[This review was collected as part of a promotion.] This portable jump starter is super convenient. It is very lightweight and has all the necessities, including the charging cable AC charging adapter that takes USB and USB-C. It has an LED light in the front which helps at night or if it’s too dark to see once you lift your hood. It works on four, six or eight cylinder vehicles. I highly recommend this for anyone who wants to stay prepared for vehicle emergencies. 
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Compact, rugged, and highly reliable jump starter for daily work or emergencies
on September 22, 2026
Posted by: LuisG
[This review was collected as part of a promotion.] This Stanley FatMax LJ12FC jump starter has been an excellent tool both for shop repairs and for carrying in the Honda Odyssey or the Nissan Altima. The build quality is highly robust, holding up perfectly in a demanding work environment. Its compact size and portability make it easy to handle between different vehicles, while the indicators are very clear for quickly checking the charge status. It offers absolute reliability by delivering the exact power needed to instantly start dead batteries
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Powerful
on September 21, 2026
Posted by: ThomasH
[This review was collected as part of a promotion.] This product is very small and very portable. With that being said, it is very easy to store as well. However, this thing is extremely reliable and has amazing performance. I would highly recommend this as it has saved me on numerous occasions. 
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Stanley Jump Starter
on September 21, 2026
Posted by: VictorD
[This review was collected as part of a promotion.] This is a very good product to have. I can keep it in my car no matter the temperature. It is powerful. It can be used to jumpstart a car or charge devices. It is compact, but powerful.
Written by a customer while visiting Stanley12volt.com
Customer Rating
5
Great power in a small package
on September 20, 2026
Posted by: JeffH
[This review was collected as part of a promotion.] I needed to jumpstart my car after letting it sit for two weeks. This jumpstarter worked perfectly. After I jumpstarted my car, I tested out its functionality as a power bank and charged up my phone. The only part I didn’t care for was the rubber cover over the jumpstart port. Otherwise I really like this jumpstarter.
Written by a customer while visiting Stanley12volt.com