The very up upside to this has been Zus, a cool device Nonda.co sent me to play with. I told their lovely representative that I would, in fact, play with it and tell you all what I thought of it. I was clear with her that I would give you my truthful opinion, once my smartphone learning curve went asymptotic.*
*Coming ever-closer to being as smart as the phone, but never quite reaching it.
Should you get one?
If you don't use a smartphone, probably not. It's still a fast charger, and I like that about it. You decide what fast mobile charging is worth to you.
If you never leave your car, probably not.
If you enjoy the Mall of America, or just routinely lose your silver Prius in a crowd, probably so. When you turn off your engine it sets itself, so if you can remember to take your phone with you you're covered.
Zus doesn't care whether it gets power while you're parked. It will still guide you home.
So, truthfully? I'd buy it, if these folks hadn't already sent me one.
I didn't get any money from using or reviewing Zus, but I did get one free unit. I told you honestly what I think of it. If you follow one of my several, excessively-linked paths to Nonda.co, you'll get $5 off your purchase, and I'll take myself out to McDonald's. If enough of you choose to buy one, I could pack on five pounds before Memorial Day.