1byone 9000mAh 12V Smart Portable Emergency Car Jump Starter

If you’ve ever found yourself stranded with a dead battery in your car, you know  the feeling of dread when it comes to finding someone with jumpers to get your car going.  With the Portable Emergency Car Jump Starter from 1byone you can fret no more. This unit provided free by 1byone in exchange for review will get you going in no time, and won’t take up a bunch of space like lugging around jumper cables in your trunk will.  As an added bonus, it can both charge your other electronics like your phone or tablet, and also has a built in flashlight.

Upon opening the case, we find a nice little package including the power bank, the car jumping adapter, and two power supplies for charging the power bank. One fits a standard outlet while the other has a cigarette adapter for charging in your vehicle.  You’ll also find a manual which was not written nor edited well, but should provide good enough instructions to get you going.


The first thing I did after unboxing was to charge up my almost dead phone.  It charged it up in pretty good time comparable to the charger I have in my vehicle that’s capable of faster charging, but it wasn’t quite near as fast as the charger that came with my phone, but that was understandable in the sense that the OEM phone charger has adaptive fast charging specific to my Galaxy.  Next, I tried out the flashlight which wasn’t the brightest or most focused light, but was more than sufficient to see my way around in the dark, or to see under your hood in the middle of the night.

The next challenge was to test out the main function of the unit, and that is to jump start your car.  At first I wasn’t sure how to go about this task since I didn’t have a car with a dead battery laying around, so ultimately I wound up bribing a friend to leave the lights on overnight in his spare vehicle to discharge the battery.

I headed over the next afternoon to test this baby out, and much to my surprise, it fired up the car instantly.  Surprisingly, the unit still read 99% battery full after the jump after leaving the house with it at 100%.  I don’t know much about what kind of power is required to start a car, but to me that was pretty impressive.  Assuming this unit holds up, this will be a great device to keep stored away in the trunk of my vehicle in the event I accidentally run down the battery.

The only thing so far I didn’t really like about the unit is the instructions that are in need of some proofreading and some clarity, and the fact that it has a temperature reading that only displays in Celsius.  It’s not a deal breaker, but if I’m in a cool area and need a jump, I don’t want to be guessing my Fahrenheit conversion tables. It states an operational temperature range from ~20 to 60 degree Celsius, but also mentions the unit will throw an error code and not work it it’s above 55 degrees Celsius to protect it.  This means that both are the instructions confusing at times, but it also probably isn’t going to work in the winter.

That aside, this appears to be an excellent emergency jump starter/device charger that would be extremely handy to have on hand in the case of an emergency.  If this is something that you may be interested in purchasing for yourself or a loved one, you can get one from Amazon here.