5 month update: Super convenient. Keep in car bag for on the go. You never know when you might be in a "foreign" vehicle. Simple. Handy. LOVE IT!--------Highly recommended ?Does exactly what is says.Charges cell phones, etc. at 3 times the speed.Love that it has both the regular USB as well as the USB "C".It took my cell phone from 70 to 100 in about 15 minutes while I was traveling between places. Incredible speed.I use my phone as phone ?, camera ?, video viewer and just about everything else (social, texting, note taker, etc.) so a good, fast charger is a necessity.I love how compact yet powerful it is.I not only use it when I drive but carry it along with me when I visit family/friends or go on trips so I have a small but powerful charger on the go.I ride with my sister at Christmas ? so having my own charger is essential. It is small enough to carry in my shaving kit / overnight bag.I can charge my phone ? and tablet at the same time. I assume it would work to charge my notebook computer. We will see.I like having the modern circuits. I have been replacing my older chargers with the newer models that better protect my delicate, expensive devices.I have used this brand for many years, starting with a cell phone holder that I continue to use to this day. I trust them to deliver excellent service and quality. I have never been disappointed by lack of service, quality or functionality.I got this mostly for travel so I have a compact dual charger to keep my phone ?, tablet, notebook, flashlight ? and other devices charged up on the go. I put it in a Ziplock bag along with a few charging cables.Not all cars have USB ports but they almost always have "cigarette lighter" charging ports.I trust it will serve me well in the years to come.