I try to always be prepared and having all this power is perfect! I love to go on road trips and contantly drain my batteries. A regular car charger usually does the trick to keep a phone from dying but never seems to charge it so if I want to play a game or browse it will still die. With double plugs I can charge my phone, and my tablet or chromebook and who knows what else.
I love having options and keeping one of these power inverters in the car is a new must have. This model has the back up cord to connect it to a big battery so If we go on a stargaze, we can power the telescope with a big battery if we need to. Love it!