Rexing 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger, LED Display, 24000mAh Portable Battery Pack for 12L Gas/9L Diesel Engines with LED Light & Jumper Cables

This is a great product! I recently had my F-150 battery die and leave me stranded. I wished I had had this starter. I kept the old battery and as a test, put it back in just to see if this would have started it. It did with no issues at all. I now keep this under the seat ready for use. I also used it to start my garden tractor and fired right up. Well made and battery is very strong!

This is something you hope you never need but are very happy if you have it and need it.

I bought this Rexing 4000A jump starter from Best Buy last week. I’m really impressed with the power. It sounds as powerful as the vehicle battery (if it was in good shape). It started it so easily and I’ll never be without it. Maybe I’ll get a second one for my wifes car. The light is bright and the ability to charge my phone and iPad is great. I’ve also bought dash cameras from Rexng in the past and I’ve never been disappointed. I’d highly recommend their products, you won’t be disappointed.

The Rexing RJ4000 Jump Starter provides the power you need to jump start your car when your car battery is not able to do so. I recently had to use it on my 1st Gen Honda Pilot with a 3.5L V6 engine and it had no issues at all. This allowed me to drive the car over to the auto parts store to purchase a new battery. This was such an easy solution than having to bust out my jumper cables and pull my other car over to use that to jump my Pilot. That is the main purpose of this device, but it can do so much more. Rexing says it can hold a charge for up to 2 years, so you can rest assured that it will be ready when you need it later on down the road. Some of the additional features this has is a very bright LED light that can flash and strobe as well. This light is powerful! Also, it has two USB Type A ports that can utilize the QC 3.0 (Quick Charge) standard for mobile devices. The USB Type C port can provide 65W of power to keep my Dell 15” laptop charged on the go as well. There is also a barrel plug for a DC output 12V power adapter for other devices. The large power display on the jumper will display the current battery level, power indicator, Warning information, BOOST indicator, DC Output indicator, and various USB information. A very sturdy carrying case is also included that easily fits all the accessories and protects the jumper from damage. I do with the jumper itself had some rubberized bumpers on it, it is all plastic, and although sturdy, it will get scratched up if you drop it or are not careful with it. It is also on the large size of things; it is about twice as big as the jumper that I had previously. With Registration, Rexing will give you an 18-month warranty, but a 12-month is standard if you don’t register. Speaking from experience, Rexing’s warranty department is great, and they are always very helpful. Overall, this large sized 4000A jumper can provide you with peace of mind that you won’t be stranded somewhere with a dead battery on your Car, laptop, phone or all of the above.

This jump starter worked great and was super easy to use. It has plenty of power, charges quickly with the USB-C port, and the display is clear and helpful. I like that it can also charge phones and other devices. Compact enough to keep in the car without taking up much space. Definitely worth it if you want a reliable backup for emergencies.

Great Jump Starter. Used it on my tractor and car. Love the fact it's portable and can charge other items as well.