Bests & Worsts Reviews from Amazon

I've had this power cell for almost 1 year. I left it on my car for a few months in variant weather and never charged it or used it. This morning I plugged it in for maybe 45 min and it was 1/2 charged. My phone went down to 3% and I got terribly lost in an unfamiliar place and needed to use Google maps and I knew that would kill my phone. I plugged in my phone to the charger and walked for 20+ minutes using my phone ,and got to where I'm going. Then left my phone to charge more and it charged all the way to 80% before running out of juice. I am very impressed that even sitting without use and in a hot car, this thing still worked great. I feel like it was definitely worth the money and am so glad I bought it.