You ever been in a critical situation where your car wont start? You don't have jumper cables or maybe you do but you don't have anybody to help you jump start you car. Well with this convenient and versatile portable jump starter you wont ever have to worry about that again. Just turn it on, attach it to you car battery and turn your car on. So simple that anybody can do it from the youngest to the oldest drivers. This portable jump starter acts as a power bank too. So you can charger you phone or other electronic devices with it. It charges via micro USB. It has a battery indicator on the side so you know when it's time to charge it. It also has a LED flashlight if you need it. It can be use in the hot or the cold. Conversion rate is 98%.