1byone 9000mAh 12V Multi-Function Smart Portable Car Jump Starter

I had never seen a battery this small that could jump start a car! The entire product is well constructed. The holding case has foam cut outs to keep everything in place. This is good since this now lives in the trunk of our car. I am impressed with the wide range of applications. I am most interested by two things: the portability and the power. This is a battery that I will carry as I travel for cell phone charging. The last two times I've helped to jump start a person's car it was difficult to get the batteries close enough for the cables to reach all terminals. This removes the issue!